Robert Wendell Heath

Also known as: R. W. Heath, Jr.; R. W. Heath Jr.; R. W. Heath

Dr. Robert W. Heath Jr. is a Professor in the Department of Electrical and Computer Engineering at the University of California, San Diego. He received the B.S. and M.S. degrees from the University of Virginia, Charlottesville, VA, in 1996 and 1997 respectively, and the Ph.D. from Stanford University, Stanford, CA, in 2002, all in electrical engineering. From 1998 to 2001, he was a Senior Member of the Technical Staff then a Senior Consultant at Iospan Wireless Inc, San Jose, CA where he worked on the design and implementation of the physical and link layers of the first commercial MIMO-OFDM communication system. From 2002 to 2020, he was with The University of Texas at Austin where he was a Cockrell Family Regents Chair in Engineering and founded the Situation Aware Vehicular Systems initiative. From 2020 to 2023, he was with North Carolina State University where he was the Lampe Distinguished Professor. He is also President and CEO of MIMO Wireless Inc. His research interests include several aspects of wireless communication, signal processing, and sensing: MIMO, limited feedback techniques, multi-hop networking, manifold signal processing, millimeter wave communication techniques, and vehicular communication systems. He authored ``Introduction to Wireless Digital Communication'' (Prentice Hall, 2017) and ``Digital Wireless Communication: Physical Layer Exploration Lab Using the NI USRP'' (National Technology and Science Press, 2012), and co-authored ``Millimeter Wave Wireless Communications'' (Prentice Hall, 2014) and ``Foundations of MIMO Communication'' (Cambridge University Press, 2019). Dr. Heath was an elected member of the Board of Governors for the IEEE Signal Processing Society (2016-2018) and the IEEE Communications Society (2018-2020). He was the Editor in Chief of the IEEE Signal Processing Magazine (2018-2020). He has been an Editor for the IEEE Transactions on Communication, an Associate Editor for the IEEE Transactions on Vehicular Technology, and lead guest editor for special issues in the IEEE Journal on Selected Areas in Communications, the IEEE Journal on Selected Topics in Signal Processing and the IEEE Signal Processing Magazine. He was on the steering committee for the IEEE Transactions on Wireless Communications (2011-2014). He was a member of the Signal Processing for Communications Technical Committee in the IEEE Signal Processing Society and is a former Chair of the IEEE COMSOC Communications Technical Theory Committee. He was a technical co-chair for the 2007 Fall Vehicular Technology Conference, general chair of the 2008 Communication Theory Workshop, general co-chair, technical co-chair and co-organizer of the 2009 IEEE Signal Processing for Wireless Communications Workshop, local co-organizer for the 2009 IEEE CAMSAP Conference, technical co-chair for the 2010 IEEE International Symposium on Information Theory, the technical chair for the 2011 Asilomar Conference on Signals, Systems, and Computers, general chair for the 2013 Asilomar Conference on Signals, Systems, and Computers, founding general co-chair for the 2013 IEEE GlobalSIP conference, and was technical co-chair for the 2014 IEEE GLOBECOM conference. He has co-organized a number of Workshops at IEEE ICC and IEEE GLOBECOM. Dr. Heath co-authored a number of award winning conference and journal papers including the 2016 IEEE Communications Society Fred W. Ellersick Prize, and the 2016 IEEE Communications and Information Theory Societies Joint Paper Award, the 2017 Marconi Prize Paper Award, the 2019 IEEE Communications Society Stephen O. Rice Prize, the 2020 IEEE Signal Processing Society Donald G. Fink Overview Paper Award, the 2020 North Carolina State University Innovator of the Year Award, the 2021 IEEE Vehicular Technology Society James Evans Avant Garde Award, and the 2022 IEEE Vehicular Technology Society Best Vehicular Electronics Paper Award. He received the 2017 EURASIP Technical Achievement award and is co-recipient of the 2019 IEEE Kiyo Tomiyasu Award. He was a distinguished lecturer in the IEEE Signal Processing Society and is a Highly Cited Researcher. He is a licensed Amateur Radio Operator, a registered Professional Engineer in Texas, a Fellow of the National Academy of Inventors, and a Fellow of the IEEE.

Works (811)

Updated: March 29th, 2024 05:02

2023 journal article

A Wideband Generalization of the Near-Field Region for Extremely Large Phased-Arrays

IEEE WIRELESS COMMUNICATIONS LETTERS, 12(3), 515–519.

author keywords: Near-field; wideband; phased-array; frequency-selective; beamforming gain
Sources: Web Of Science, NC State University Libraries
Added: April 24, 2023

2023 article

ADMM-based Solution for mm Wave UL Channel Estimation with One-bit ADCs via Sparsity Enforcing and Toeplitz Matrix Reconstruction

ICC 2023 - IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, pp. 1338–1343.

By: M. Esfandiari*, S. Vorobyov* & R. Heath n

author keywords: Multi-user MIMO; uplink channel estimation; one-bit ADC; angular domain; Toeplitz matrix reconstruction; l(1) regularized logistic regression
TL;DR: This work reformulates the UL channel estimation problem, and combines the idea of regularized logistic regression classification and Toeplitz matrix reconstruction in a properly designed optimization problem to develop a computationally efficient alternating direction method of multi-pliers (ADMM)-based implementation for the L1-RLR-TMR method. (via Semantic Scholar)
Source: Web Of Science
Added: March 4, 2024

2023 journal article

Achievable Rate of Near-Field Communications Based on Physically Consistent Models

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(2), 1266–1280.

author keywords: Antennas; Noise measurement; Antenna theory; Integrated circuit modeling; Wireless communication; SISO communication; Mathematical models; Circuit theory for communications; NFC; SISO; mutual coupling; induced EMF method; CMS antennas; Chu's limit; compact antennas
Sources: Web Of Science, NC State University Libraries
Added: April 11, 2023

2023 article

Bandwidth Gain: the Missing Gain of Massive MIMO

ICC 2023 - IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS, pp. 5997–6003.

author keywords: MIMO; circuit theory for communication; far-field wireless communication; mutual coupling; Chu's limit; canonical minimum scattering antennas; compact antennas; super-wideband antenna arrays
TL;DR: The results reveal new insights into the design of tightly-coupled massive antenna arrays as opposed to the widely-adopted “disconnected” designs that disregard MC by putting faith in the half-wavelength spacing rule. (via Semantic Scholar)
Source: Web Of Science
Added: March 4, 2024

2023 journal article

Circulant Shift-Based Beamforming for Secure Communication With Low-Resolution Phased Arrays

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(4), 2295–2310.

By: K. Patel*, N. Myers* & R. Heath Jr

author keywords: Symbols; Antenna arrays; Phased arrays; Millimeter wave communication; Eavesdropping; Array signal processing; Phase shifters; Millimeter wave (mmWave) communication; physical layer security; low-resolution phased arrays; directional modulation
TL;DR: This work shows that the use of random circulant shifts together with appropriate phase adjustment induces (APN) in the directions different from that of the target receiver, and achieves better defense than the antenna subset modulation. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: May 22, 2023

2023 journal article

Dynamic Network-Assisted D2D-Aided Coded Distributed Learning

IEEE TRANSACTIONS ON COMMUNICATIONS, 71(6), 3352–3367.

author keywords: Computational modeling; Device-to-device communication; Training; Data models; Collaboration; Distance learning; Computer aided instruction; Online distributed learning; device-to-device communications; Index Terms; coded computing; data compression; load balancing
TL;DR: This work designs a novel D2D-aided coded distributed learning method named D 2D-CDL for efficient load balancing across devices and derives an optimal compression rate, which minimizes the processing time. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: July 31, 2023

2023 article

End-to-end Full-Stack Drone Measurements: A Case Study Using AERPAW

2023 IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS WORKSHOPS, ICC WORKSHOPS, pp. 1422–1427.

By: M. Drago*, A. Gurses n, R. Heath n, M. Sichitiu n & M. Zorzi*

Contributors: M. Drago*, A. Gurses n, R. Heath n, M. Sichitiu n & M. Zorzi*

author keywords: AERPAW; UAV; SDR; LTE
TL;DR: This paper uses AERPAW for the end-to-end evaluation of the performance of an emulated Uplink traffic between an Unmanned Aerial Vehicle (UAV) and a Fixed Node (FN), connected through an open source LTE network software (srsRAN). (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: March 11, 2024

2023 journal article

Green Joint Communications and Sensing Employing Analog Multi-Beam Antenna Arrays

IEEE COMMUNICATIONS MAGAZINE, 61(7), 172–178.

By: K. Wu*, J. Zhang*, X. Huang*, R. Heath n & Y. Guo*

author keywords: Discrete Fourier transforms; Radio frequency; Array signal processing; Sensors; Antennas; Phased arrays; Lenses; Power demand; Phase shifters; Butler matrices; 6G mobile communication; Hybrid power systems; Energy efficiency; Telecommunication services
TL;DR: The energy-efficient and easy-to-design multi-beam antenna arrays (MBAAs) for JCAS, using pre-designed and fixed analog devices, can simultaneously steer multiple beams yet with negligible power consumption compared with other techniques are introduced. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 11, 2023

2023 journal article

Joint Relay Selection and Beam Management Based on Deep Reinforcement Learning for Millimeter Wave Vehicular Communication

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 72(10), 13067–13080.

By: D. Kim*, M. Castellanos n & R. Heath n

author keywords: mmWave MIMO; 3GPP NR V2X; relay selection; deep reinforcement learning
TL;DR: A joint relay selection and beam management policy based on deep reinforcement learning (DRL) using the Markov property of beam indices and beam measurements is proposed, which learns time-varying thresholds that adapt to the dynamic channel conditions and traffic patterns. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 2, 2024

2023 article

Multi-Armed Bandit for Link Configuration in Millimeter-Wave Networks: An Approach for Solving Sequential Decision-Making Problems

Zhang, Y., & Heath Jr, R. W. (2023, February 7). IEEE VEHICULAR TECHNOLOGY MAGAZINE, Vol. 2.

By: Y. Zhang* & R. Heath Jr

author keywords: Decision making; Antenna arrays; Training; Throughput; Optimization; Wireless communication; Roads
TL;DR: This article motivates the use of the multi-armed bandit (MAB) framework to intelligently search out the optimal configuration when establishing the mm-wave links by showing that within the MAB framework, the optimal beam sweeping period, beamwidth, and beam directions could be dynamically learned with sample-computational-efficient bandit algorithms. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: March 6, 2023

2023 journal article

Multi-User Downlink Beamforming Using Uplink Downlink Duality With CEQs for Frequency Selective Channels

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(12), 9688–9702.

By: K. Mazher*, A. Mezghani* & R. Heath n

author keywords: OFDM; Precoding; Quantization (signal); Radio frequency; Antennas; Optimization; Downlink; CEQ ADC; CEQ DAC; optimized dithering; uplink downlink duality
TL;DR: This paper presents a solution to the multi-user multi-carrier beamforming and power allocation problem that maximizes the minimum SQINR over all users and sub-carriers and establishes uplink downlink duality for the system with CEQ hardware constraints and OFDM-based transmission considered. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: March 18, 2024

2023 article

Multi-node joint communication and radar using synchronization signals in 5G

2023 IEEE 9TH INTERNATIONAL WORKSHOP ON COMPUTATIONAL ADVANCES IN MULTI-SENSOR ADAPTIVE PROCESSING, CAMSAP, pp. 161–165.

By: S. Amir, M. Castellanos n & R. Heath n

author keywords: Joint communication and radar; 5G; multi radar; quantization
TL;DR: This work proposes a JCR system with multiple nodes that leverages the 5G communication waveform for range estimation and proposes a linear minimum mean squared error (LMMSE) based estimate that combines the information from all nodes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: Web Of Science
Added: March 25, 2024

2023 article

Online variable-length source coding for minimum bitrate LQG control

2023 62ND IEEE CONFERENCE ON DECISION AND CONTROL, CDC, pp. 3917–3924.

By: T. Cuvelier*, T. Tanaka & R. Heath n

TL;DR: This work proposes an adaptive coding approach to achieve linear-Quadratic-Gaussian (LQG) control with near-minimum bitrate prefix-free feedback, and develops a practical, zero-delay, fixed precision source code for the quantizer outputs. (via Semantic Scholar)
Source: Web Of Science
Added: March 25, 2024

2023 journal article

Physical Layer Security at a Point-to-Point MIMO System With 1-Bit DACs and ADCs

IEEE WIRELESS COMMUNICATIONS LETTERS, 12(8), 1439–1443.

author keywords: Quantization (signal); MIMO communication; Covariance matrices; Resource management; Transmitters; Signal to noise ratio; Security; Multiple-input multiple-output communication; 1-bit digital-to-analog and analog-to-digital converters; discrete and Gaussian signaling; channel state information
TL;DR: This letter evaluates the secrecy rate for the extreme case of 1-bit single-user multiple-input multiple-output systems following two signaling approaches and proposes an algorithm that provides near-optimal results for low signal-to-noise ratios (SNRs). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023

2023 journal article

Reinforcement Learning-Based Joint User Scheduling and Link Configuration in Millimeter-Wave Networks

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(5), 3038–3054.

By: Y. Zhang* & R. Heath Jr

author keywords: Millimeter wave communication; Relays; Training; Delays; Optimization; Dynamic scheduling; Wireless communication; Millimeter wave; mobility; user scheduling; relay selection; codebook selection; beam tracking; deep reinforcement learning; proximal policy optimization; multi-armed bandit; Thompson sampling
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 3, 2023

2023 journal article

Super-Wideband Massive MIMO

IEEE JOURNAL ON SELECTED AREAS IN COMMUNICATIONS, 41(8), 2414–2430.

author keywords: MIMO; circuit theory for communication; far-field wireless communication; mutual coupling; Chu's limit; canonical minimum scattering antennas; compact antennas; super-wideband antenna arrays
TL;DR: The results reveal new insights into the design of tightly-coupled massive antenna arrays as opposed to the widely-adopted “disconnected” designs that disregard MC by putting faith in the half-wavelength spacing rule. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 28, 2023

2023 journal article

Twenty-Five Years of Advances in Beamforming: From convex and nonconvex optimization to learning techniques

IEEE SIGNAL PROCESSING MAGAZINE, 40(4), 118–131.

By: A. Elbir*, K. Mishra*, S. Vorobyov* & R. Heath Jr

author keywords: Array signal processing; Shape; Sonar applications; Seismology; Signal processing algorithms; Optimization methods; Machine learning
TL;DR: This article captures the evolution of beamforming in the last 25 years from convex to nonconvex optimization and optimization to learning approaches and provides a glimpse into these important signal processing algorithms for a variety of transmit–receive architectures, propagation zones, propagation paths, and multidisciplinary applications. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: July 19, 2023

2022 journal article

A Lower-Bound for Variable-Length Source Coding in Linear-Quadratic-Gaussian Control With Shared Randomness

IEEE CONTROL SYSTEMS LETTERS, 6, 2918–2923.

By: T. Cuvelier*, T. Tanaka* & R. Heath n

author keywords: Decoding; Bit rate; Quantization (signal); Costs; Rate-distortion; Data processing; Random variables; Information theory and control; control over communications
TL;DR: This letter considers a Linear Quadratic Gaussian control system where feedback occurs over a noiseless binary channel and derives lower bounds on the minimum communication cost (quantified via the channel bitrate) required to attain a given control performance. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 27, 2022

2022 journal article

Achievable Rate With Antenna Size Constraint: Shannon Meets Chu and Bode

IEEE TRANSACTIONS ON COMMUNICATIONS, 70(3), 2010–2024.

author keywords: Broadband antennas; Antenna theory; Integrated circuit modeling; Antennas; Receiving antennas; Wireless communication; Broadband communication; Achievable rate; Chu's limit; size-limited antennas; broadband impedance matching
TL;DR: The maximum achievable rate over the single-input single-output wireless communication channels under a restriction on the antenna size at the receiver is characterized and the effective signal-to-noise ratio (SNR) is determined which shows that impedance matching is essential in both narrowband and broadband scenarios. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 4, 2022

2022 article

Achievable Rate of Near-Field Communications Based on Physically Consistent Models

IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2022), pp. 938–943.

author keywords: Circuit theory for communications; near-field wireless communications; SISO; mutual coupling; induced EMF method; canonical minimum scattering antennas
TL;DR: A novel information-theoretic approach for studying the effects of mutual coupling, between the transmit and receive antennas, on the overall performance of single-input-single-output (SISO) near-field communications by incorporating the finite antenna size constraint using Chu’s theory and under the assumption of canonical-minimum scattering. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: December 12, 2022

2022 article

An Inverted L-Shaped Multi-Layer Reconfigurable Intelligent Surface for THz Communications

2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1060–1063.

By: S. Saab*, S. Abu Surra*, G. Xu* & R. Heath n

author keywords: Reflective Intelligent Surfaces; Reconfigurable Intelligent Surfaces; Meta-materials; 6G; THz; Beamforming; Beam-steering; Frequency selective surface; MIMO
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2022 journal article

Artificial Intelligence for Physical-Layer Design of MIMO Communications with One-Bit ADCs

IEEE COMMUNICATIONS MAGAZINE, 60(7), 76–81.

By: Y. Jeon*, D. Kim*, S. Hong*, N. Lee* & R. Heath n

TL;DR: Recent progress in incorporating AI into the design of classical PHY techniques and emerging studies on establishing AI-inspired frameworks that fundamentally replace classical model-driven techniques with data-driven AI techniques are covered. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 1, 2022

2022 article

Attention Neural Network for Downlink Cell-Free Massive MIMO Power Control

2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 738–743.

By: A. Kocharlakota*, S. Vorobyov* & R. Heath n

TL;DR: A computationally efficient deep-learning algorithm to solve the max-min power control optimization problem subject to power constraints by presenting an attention neural network composed using the masked multi-head attention network modules, which are building blocks of the popular transformer neural network. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2022 journal article

Coverage and Capacity of Terahertz Cellular Networks With Joint Transmission

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 21(11), 9865–9878.

By: N. Olson*, J. Andrews* & R. Heath n

author keywords: Terahertz (THz) cellular networks; joint transmission (JT); stochastic geometry; coverage probability; beam misalignment
TL;DR: Overall, the analysis indicates that joint transmission from a few base stations improves coverage and capacity by mitigating the impact of beam misalignment and in certain settings, NC-JT is a more efficient usage a network access points compared to the non-cooperative case, and reduces the sensitivity of Coverage probability and capacity to the choice of user beamwidth. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: November 28, 2022

2022 journal article

Deep Reinforcement Learning-Based Scheduling for Multiband Massive MIMO

IEEE ACCESS, 10, 125509–125525.

By: V. Lopes*, C. Nahum, R. Dreifuerst*, P. Batista*, A. Klautau, K. Cardoso*, R. Heath Jr

author keywords: Multiband scheduling; MIMO; DRL-based scheduling; mmWave
TL;DR: This paper considers a massive MIMO system where channels are dynamically allocated in different frequency bands and proposes deep reinforcement learning (DRL) agents to perform user scheduling and shows that the DRL models outperformed baselines obtaining a 20% higher network sum rate and an 84% smaller packet loss rate. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 3, 2023

2022 journal article

Extending Uplink Coverage of mmWave and Terahertz Systems Through Joint Phase-Time Arrays

IEEE ACCESS, 10, 88872–88884.

author keywords: True time delay; 5G; 6G; millimeter wave; terahertz; sub-terahertz
TL;DR: This work proposes a novel use case of JPTA where the BS exploits the frequency-dependent beams to serve multiple users’ equipment (UEs) at different directions simultaneously with the full array gain and with no inter-UE interference. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: September 12, 2022

2022 journal article

InFocus: A Spatial Coding Technique to Mitigate Misfocus in Near-Field LoS Beamforming

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 21(4), 2193–2209.

By: N. Myers* & R. Heath n

author keywords: Phased arrays; Array signal processing; Antenna arrays; Bandwidth; Arrays; Wireless communication; Standards; Near-field communication; mm-wave; terahertz; misfocus; beam squint; spatial FMCW
TL;DR: The misfocus effect is investigated and InFocus, a low complexity technique to construct beams that are well suited for massive wideband phased arrays is proposed, which mitigates beam misfocus and beam squint when applied to near-field and far-field systems. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 25, 2022

2022 journal article

Integration of Radar Sensing into Communications with Asynchronous Transceivers

IEEE COMMUNICATIONS MAGAZINE, 60(11), 106–112.

By: J. Zhang*, K. Wu*, X. Huang*, Y. Guo*, D. Zhang* & R. Heath n

TL;DR: This article provides a systematic overview of existing and potential new techniques for tackling clock asynchronism in radar sensing, including using a finetuned global reference clock, and single-node-based and network-based techniques. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 5, 2022

2022 article

Joint Beam Management and Relay Selection Using Deep Reinforcement Learning for MmWave UAV Relay Networks

2022 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM).

By: D. Kim*, M. Castellanos n & R. Heath n

TL;DR: This paper uses deep reinforcement learning (DRL) to jointly select unblocked UAV relays and to perform beam management and shows with numerical evaluation that the proposed method outperforms baselines without prior channel knowledge. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: May 15, 2023

2022 article

Massive MIMO Beam Management in Sub-6 GHz 5G NR

2022 IEEE 95TH VEHICULAR TECHNOLOGY CONFERENCE (VTC2022-SPRING).

By: R. Dreifuerst*, R. Heath n & A. Yazdan*

TL;DR: It is shown that machine learning can be used to train site-specific codebooks for initial access and approaches the optimal performance (perfect CSI and singular value decomposition (SVD)-based beamforming), using only a few bits of feedback. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: October 31, 2022

2022 journal article

Massive MIMO Precoding and Spectral Shaping With Low Resolution Phase-Only DACs and Active Constellation Extension

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 21(7), 5265–5278.

By: A. Mezghani* & R. Heath n

author keywords: Precoding; Receivers; Message passing; Approximation algorithms; Optimization; Wireless communication; Transmitting antennas; Massive MIMO; millimeter-wave; precoding; spectral shaping; low resolution DACs
TL;DR: Simulation and analytical results demonstrate that the proposed combined pulse shaping and precoding approach compared to standard linear methods yields the same performance as the SER based formulation in terms of uncoded SER. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 29, 2022

2022 journal article

Multi-User Downlink Beamforming Using Uplink Downlink Duality With 1-Bit Converters for Flat Fading Channels

IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 71(12), 12885–12900.

By: K. Mazher*, A. Mezghani* & R. Heath n

author keywords: 1-bit ADC; DAC; multi-user beamforming and power allocation; uplink downlink duality; optimized dithering
TL;DR: This paper presents a linear solution to the multi-user downlink beamforming problem based on the uplink downlink duality principle, and significantly reduces the performance gap from non-linear solutions in terms of the uncoded bit error rate at a fraction of the computational complexity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 6, 2023

2022 article

Nonuniform true time delay precoding in wideband MISO systems

2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1233–1237.

By: N. Deshpande n, M. Castellanos n & R. Heath n

author keywords: true time delay beamforming; wideband; multi-path; sparse eigenvalue problem; minorization-maximization
TL;DR: This work reformulates the TTD constraint by including a sparsity regularizer penalty term in the objective and proposes a procedure to compute the delays using the precoder response obtained after solving a sparse eigenvalue problem for maximizing the total energy. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023

2022 article

Optimizing the Deployment of Reconfigurable Intelligent Surfaces in MmWave Vehicular Systems

2022 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM 2022), pp. 5261–5266.

By: X. Tian n, N. Gonzalez-Prelcic n & R. Heath n

author keywords: Reconfigurable intelligent surfaces; millimeter wave; blockages; deployment; vehicular systems
TL;DR: This paper finds the optimal location, height and downtilt of RIS working in a realistic vehicular scenario and finds that the optimized RIS improves the area-averaged rate fifty percent over the case without a RIS, as well as further improvements in the coverage ratio. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: May 1, 2023

2022 journal article

Optimizing the Mutual Information of Frequency-Selective Multi-Port Antenna Arrays in the Presence of Mutual Coupling

IEEE TRANSACTIONS ON COMMUNICATIONS, 70(3), 2072–2084.

By: S. Saab*, A. Mezghani* & R. Heath n

author keywords: Antenna arrays; Antennas; Broadband antennas; MISO communication; Wideband; Mathematical models; Correlation; Mutual coupling; multi-band; wideband communication; Shannon; MISO; SIMO; optimization; wideband antenna array; beamforming; matching
TL;DR: A system model that incorporates the effects of mutual coupling (MC) of wideband physically realizable single-input multiple-output (SIMO) and multiple-input single- output (MISO) antenna systems is presented and a new single-port matching technique for wideband antenna arrays is developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: April 4, 2022

2022 article

Physical Layer Defense against Eavesdropping Attacks on Low-Resolution Phased Arrays

IEEE INTERNATIONAL CONFERENCE ON COMMUNICATIONS (ICC 2022), pp. 492–497.

By: K. Patel*, N. Myers* & R. Heath n

TL;DR: A directional modulation (DM)-based defense against eavesdropping attacks on low-resolution phased arrays by applies random circulant shifts to the beamformer for every symbol transmission and theoretically analyzes the secrecy mutual information (SMI) achieved by the proposed defense mechanism. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: December 12, 2022

2022 journal article

Radar Imaging Based on IEEE 802.11ad Waveform in V2I Communications

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 70, 4981–4996.

By: G. Han*, J. Choi* & R. Heath n

author keywords: Radar imaging; Radar; Imaging; Doppler shift; OFDM; Millimeter wave communication; Doppler radar; IEEE 802; 11ad; ISAR imaging; joint radar and communication system; vehicular environments
TL;DR: Simulation results verify that the proposed ISAR imaging technique is able to form high-resolution ISAR images from point scatterer models of realistic vehicular settings with different viewpoints. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 28, 2022

2022 article

SPARSITY ENFORCING WITH TOEPLITZ MATRIX RECONSTRUCTION METHOD FOR MMWAVE UL CHANNEL ESTIMATION WITH ONE-BIT ADCS

2022 IEEE 12TH SENSOR ARRAY AND MULTICHANNEL SIGNAL PROCESSING WORKSHOP (SAM), pp. 141–145.

By: M. Esfandiari*, S. Vorobyov* & R. Heath n

author keywords: Multi-user MIMO; uplink channel estimation; one-bit analog-to-digital converter; angular domain; Toeplitz matrix reconstruction
TL;DR: This work reformulates the UL channel estimation prob-lem as a multiplication of two specific matrices, and then leverages Toeplitz matrix reconstruction in conjunction with the angular domain sparsity of the UL channels to recover UL channel via solving a properly designed optimization Prob-lem. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 27, 2023

2022 journal article

SignalNet: A Low Resolution Sinusoid Decomposition and Estimation Network

IEEE TRANSACTIONS ON SIGNAL PROCESSING, 70, 4454–4467.

By: R. Dreifuerst n & R. Heath n

author keywords: Signal processing algorithms; Estimation; Quantization (signal); Signal resolution; Task analysis; Neural networks; Data models; Sinusoid decomposition; estimation; deep-learning; low-resolution; detection
TL;DR: This work proposes SignalNet, a neural network architecture that detects the number of sinusoids and estimates their parameters from quantized in-phase and quadrature samples that incorporates signal reconstruction internally as domain knowledge within the network to enhance learning and surpass traditional algorithms in mean squared error and Chamfer error. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: October 3, 2022

2022 journal article

Single Channel Equivalent Point Processes of Poisson Networks With Multiple Channel Laws

IEEE COMMUNICATIONS LETTERS, 26(3), 711–715.

By: N. Olson*, J. Andrews* & R. Heath n

author keywords: Fading channels; Transmitters; Cellular networks; Transforms; Random variables; Loss measurement; Heating systems; Stochastic geometry; point processes; wireless network analysis; mmWave and THz networks
TL;DR: The construction and characterization of novel single channel equivalent representations of a Poisson Point Process (PPP) whose points follow multiple channel laws with respect to the origin are presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: March 28, 2022

2021 article

A Novel Antenna Matching Technique for Joint Wireless Communication and Energy Harvesting

2021 IEEE-APS TOPICAL CONFERENCE ON ANTENNAS AND PROPAGATION IN WIRELESS COMMUNICATIONS (APWC), pp. 36–36.

By: S. Saab*, A. Mezghani* & R. Heath n

TL;DR: The enhanced antenna matching process integrates the information theoretic capacity equation and Maxwell's equations and substantially improves the trade-off between the harvested power and spectral efficiency based on the joint optimization approach. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 20, 2021

2021 journal article

Adaptive and Fast Combined Waveform-Beamforming Design for MMWave Automotive Joint Communication-Radar

IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 15(4), 996–1012.

By: P. Kumari*, N. Myers* & R. Heath n

author keywords: Radar; Radar antennas; Automotive engineering; Sensors; Channel estimation; Array signal processing; Radar applications; Automotive radar; millimeter-wave vehicular communication; joint communication-radar; partial Fourier compressed sensing; adaptive waveform and beamforming design
TL;DR: Numerical results demonstrate that the proposed JCR design enables the estimation of short- and medium-range radar channels in the Doppler-angle domain with a low normalized MSE, at the expense of a small degradation in the communication distortion MSE. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 28, 2021

2021 journal article

An Overview of Signal Processing Techniques for Joint Communication and Radar Sensing

IEEE JOURNAL OF SELECTED TOPICS IN SIGNAL PROCESSING, 15(6), 1295–1315.

author keywords: Radar; Sensors; Signal processing; Radar cross-sections; Optimization; Radar signal processing; Receivers; Dual-function radar-communications (DFRC); RadCom; joint radar-communications (JRC); joint communica-tions-radar (JCR); joint communication and radio; radar sensing (JCAS); integrated sensing and communications (ISAC)
TL;DR: This paper provides a comprehensive overview of the state-of-the-art on JCR systems from the signal processing perspective, and a balanced coverage on both transmitter and receiver is provided for three types of J CR systems, namely, communication-centric, radar-centric and joint design and optimization. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 13, 2021

2021 journal article

Challenges and Opportunities of Future Rural Wireless Communications

IEEE COMMUNICATIONS MAGAZINE, 59(12), 16–22.

author keywords: Wireless communication; Costs; Sociology; Transportation; Broadband communication; Reliability; Statistics
TL;DR: The motivations and challenges of providing broadband access over vast rural regions are examined, with an emphasis on the wireless aspect in view of its irreplaceable role in closing the digital gap. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: January 24, 2022

2021 article

Coverage in Terahertz Cellular Networks with Imperfect Beam Alignment

2021 IEEE GLOBAL COMMUNICATIONS CONFERENCE (GLOBECOM).

By: N. Olson*, J. Andrews* & R. Heath n

author keywords: THz networks; stochastic geometry; beam misalignment; coverage probability
TL;DR: A novel stochastic geometry framework is developed to quantify the SINR coverage probability of a Terahertz (THz) cellular network, introducing a novel approach of characterizing non line-of-sight (NLOS) links as equivalent LoS links using a non-homogeneous Poisson Point Process. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: May 23, 2022

2021 article

DEEP LEARNING BASED RANGE AND DOA ESTIMATION USING LOWRESOLUTION FMCW RADARS

2021 IEEE STATISTICAL SIGNAL PROCESSING WORKSHOP (SSP), pp. 366–370.

By: R. Annaluru*, K. Mazher* & R. Heath n

TL;DR: A deep learning model is presented for simultaneous range and direction of arrival estimation of frequency modulated continuous waveform radars using 1-bit analog-to-digital converters and can accurately detect the position of a vehicle within the field of view. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: December 20, 2021

2021 journal article

DeepWiPHY: Deep Learning-Based Receiver Design and Dataset for IEEE 802.11ax Systems

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 20(3), 1596–1611.

author keywords: Receivers; Wireless communication; Channel estimation; OFDM; Training; IEEE 802; 11ax Standard; Deep learning; IEEE 802; 11ax; Wi-Fi 6; OFDM; channel estimation; hardware impairment compensation; dataset generation; experimental evaluation
TL;DR: The comprehensive evaluation of Deep WiPHY with synthetic and real-world datasets confirms that, even without fine-tuning the neural network’s architecture parameters, DeepWiPHY achieves comparable performance to or outperforms the conventional WLAN receivers, under a wide range of channel models, signal-to-noise (SNR) levels, and modulation schemes. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: April 19, 2021

2021 journal article

Improved CRB for Millimeter-Wave Radar With 1-Bit ADCs

IEEE OPEN JOURNAL OF SIGNAL PROCESSING, 2, 318–335.

By: K. Mazher*, A. Mezghani* & R. Heath n

author keywords: Radio frequency; Parameter estimation; System performance; Computer architecture; Millimeter wave radar; Hardware; Sensors; 1-bit ADC; analog preprocessing; bussgang decomposition; Cramer-Rao bound; Fisher information; radar
TL;DR: The potential of the proposed architecture to meet the requirements of high-resolution sensing through analytical derivation and numerical computation of an improved CRB is demonstrated and its achievability is shown through a correlation-based estimator. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 12, 2021

2021 journal article

JCR70: A Low-Complexity Millimeter-Wave Proof-of-Concept Platform for a Fully-Digital SIMO Joint Communication-Radar

IEEE OPEN JOURNAL OF VEHICULAR TECHNOLOGY, 2, 218–234.

By: P. Kumari*, A. Mezghani* & R. Heath n

author keywords: Radar; Radar antennas; Millimeter wave communication; Channel estimation; Wideband; Hardware; Antenna arrays; Antenna arrays; fully-digital radio implementation; low -resolution ADCs; millimeter-wave communication; millimeter-wave radar; sparse estimation
TL;DR: This paper presents a joint communication-radar proof-of-concept platform, named JCR70, to evaluate and demonstrate the performance of these JCR systems using real channel measurements in the 71–76 GHz band, and compares this platform with the INRAS Radarbook. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 6, 2021

2021 journal article

Leveraging Waveform Structure to Develop a Power Scalable AoA Estimation

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY, 2, 2739–2759.

By: M. Ullah, A. Tewfik* & R. Heath n

author keywords: Estimation; Receivers; Power demand; Linear antenna arrays; Wireless communication; Signal to noise ratio; Computer architecture; Sub-Nyquist AoA estimation; mmWave; digital receiver; pilot design; waveform structure
TL;DR: This paper provides a power scalable solution for AoA estimation with structured waveforms in a narrowband channel named ADELA, and designs a set of pilot sequences that maintain orthogonality in sub-Nyquist sampling domains. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: January 18, 2022

2021 journal article

Line-of-Sight Probability for mmWave-Based UAV Communications in 3D Urban Grid Deployments

IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 20(10), 6566–6579.

By: M. Gapeyenko*, D. Moltchanov*, S. Andreev* & R. Heath n

author keywords: Buildings; 3GPP; Mathematical model; Analytical models; Urban areas; Unmanned aerial vehicles; Three-dimensional displays; 3D LoS probability; urban grid deployment; mmWave radio; UAV communication; 5G NR technology
TL;DR: A LoS probability model in UAV communication setups over regular urban grid deployments, which is based on a Manhattan Poisson line process, is proposed and it is established that the latter provide an overly optimistic approximation for various deployments. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 1, 2021

2021 article

Optimization of a Millimeter-Wave UAV-to-Ground Network in Urban Deployments

2021 IEEE MILITARY COMMUNICATIONS CONFERENCE (MILCOM 2021).

By: E. Hriba*, M. Valenti* & R. Heath n

TL;DR: An urban tactical wireless network is considered wherein the base stations are situated on unmanned aerial vehicles (UAVs) that provide connectivity to ground assets such as vehicles located on city streets that characterizes the performance by a connectivity distribution, and identifies the optimal altitude for the UAVs. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: July 18, 2022

2021 article

Optimizing Coverage and Capacity in Cellular Networks using Machine Learning

2021 IEEE INTERNATIONAL CONFERENCE ON ACOUSTICS, SPEECH AND SIGNAL PROCESSING (ICASSP 2021), pp. 8138–8142.

By: R. Dreifuerst*, S. Daulton*, Y. Qian*, P. Varkey*, M. Balandat*, S. Kasturia*, A. Tomar*, A. Yazdan*, V. Ponnampalam*, R. Heath n

author keywords: coverage and capacity optimization; Bayesian optimization; machine learning; reinforcement learning
TL;DR: This paper develops and compares two approaches for maximizing coverage and minimizing interference by jointly optimizing the transmit power and downtilt (elevation tilt) settings across sectors and suggests that data-driven techniques can effectively self-optimize coverage and capacity in cellular networks. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 29, 2021

2021 journal article

Perceptive Mobile Networks: Cellular Networks With Radio Vision via Joint Communication and Radar Sensing

IEEE VEHICULAR TECHNOLOGY MAGAZINE, 16(2), 20–30.

By: J. Zhang*, M. Rahman*, X. Huang*, S. Chen, Y. Guo* & R. Heath n

author keywords: Sensors; Downlink; Uplink; Hardware; OFDM; Mobile commuincation; Radio transmitters; Cellular networks; Pattern recognition; Mutual information; Network architecture; Parameter estimation
TL;DR: A system architecture that unifies three types of sensing is presented, the required modifications to existing mobile networks are investigated, and the signals applicable to sensing are exemplified. (via Semantic Scholar)
UN Sustainable Development Goal Categories
Sources: Web Of Science, NC State University Libraries
Added: June 14, 2021

2021 journal article

Power Scalable Angle of Arrival Estimation Using Pilot Design With Orthogonal Subsequences

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY, 2, 1690–1709.

By: M. Ullah*, A. Tewfik* & R. Heath n

author keywords: AoA estimation; digital receiver; mmWave; pilot design; scalable power
TL;DR: This paper presents a variable rate sub-Nyquist decoupling solution that leverages pilot design and indicates some other benefits of the decoupled, including reduced complexity algorithm implementation and improved performance estimation for the non maximum likelihood estimators. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 2, 2021

2021 journal article

Quantum Codes in Classical Communication: A Space-Time Block Code From Quantum Error Correction

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY, 2, 2383–2412.

By: T. Cuvelier*, S. Lanham*, B. La Cour* & R. Heath n

author keywords: Codes; Quantum mechanics; Quantum computing; Error correction codes; Block codes; Encoding; MIMO communication; Wireless communications; space-time coding; MIMO; quantum error correction
TL;DR: A general framework for noncoherent communication using techniques from the field of quantum error correction (QEC) is proposed and a family of space-time block codes for non-coherent multiple-input multiple-output (MIMO) communication is developed. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: November 15, 2021

2021 journal article

Scheduling Observers Over a Shared Channel With Hard Delivery Deadlines

IEEE TRANSACTIONS ON COMMUNICATIONS, 69(1), 133–148.

By: R. Jurdi*, J. Andrews* & R. Heath n

author keywords: Ultra-reliability; low-latency; infrastructure wireless networks; hard deadlines; decision making; sensor scheduling; sensor selection; branch-and-bound; IoT; 5G; URLLC; mMTC
TL;DR: This work develops a novel framework to formulate the Observer Selection problem through which the executive schedules a sequence of observations that maximize its knowledge about the current state of the system it controls, and devise a branch-and-bound algorithm that systematically prunes the search space. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: February 15, 2021

2021 article

Signal Conditioning and Prototyping for Selective OFDM Systems with Simultaneous Wireless Information and Power Transfer

2021 IEEE-APS TOPICAL CONFERENCE ON ANTENNAS AND PROPAGATION IN WIRELESS COMMUNICATIONS (APWC), pp. 61–61.

By: R. Buckley* & R. Heath n

TL;DR: A selective OFDM system is introduced which leverages the OFDM signal structure for energy harvesting and incorporates co-receiver implementations into receiver architectures. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 20, 2021

2021 journal article

Signal Conditioning for Selective OFDM SWIPT Systems

IEEE OPEN JOURNAL OF THE COMMUNICATIONS SOCIETY, 2, 1886–1900.

By: R. Buckley* & R. Heath n

author keywords: Wireless communication; Monte Carlo methods; Transmitters; OFDM; System performance; Rectifiers; Prototypes; Conversion efficiency; orthogonal frequency-division multiplexing; Schottky diode; selective transmission; self-sustainability; signal conditioning; simultaneous wireless information and power transfer
TL;DR: An enhanced transmitter architecture designed to condition the transmit signal for improved conversion efficiency is introduced and increased energy gains and full self-sustainability with the introduction of signal conditioning. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: August 30, 2021

2021 journal article

Towards mmWave V2X in 5G and Beyond to Support Automated Driving

IEICE TRANSACTIONS ON COMMUNICATIONS, E104B(6), 587–603.

By: K. Sakaguchi*, R. Fukatsu*, T. Yu*, E. Fukuda*, K. Mahler*, R. Heath n, T. Fujii*, K. Takahashi* ...

author keywords: automated driving; cooperative perception; V2X; V2V; IEEE802.11p; LTE-V2X; millimeter-wave; 5G; IEEE802.11ad/bd; NR-V2X
TL;DR: The explanations provide detailed rate calculations for this use case and show that millimeter wave is the only technology able to achieve the requirements, including cover-age enhancement and beam alignment. (via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 21, 2021

2021 journal article

Waveform Design and Accurate Channel Estimation for Frequency-Hopping MIMO Radar-Based Communications

IEEE TRANSACTIONS ON COMMUNICATIONS, 69(2), 1244–1258.

author keywords: Radar; Channel estimation; Radar antennas; Timing; Phase shift keying; Frequency estimation; Estimation; Joint communication and sensing (JCAS); dual-function radar communication (DFRC); frequency hopping (FH) MIMO radar; timing offset; channel estimation and AoD
Sources: Web Of Science, NC State University Libraries
Added: March 29, 2021

2020 journal article

Adaptive Virtual Waveform Design for Millimeter-Wave Joint Communication-Radar

IEEE Transactions on Signal Processing, 68, 715–730.

By: P. Kumari*, S. Vorobyov* & R. Heath*

Contributors: P. Kumari*, S. Vorobyov* & R. Heath*

author keywords: Millimeter wave radar; millimeter wave communication; joint communication-radar; automotive applications; adaptive waveform design; velocity estimation
TL;DR: Simulations show that an optimal virtual (non-uniform) waveform achieves a significant performance improvement as compared to a uniform waveform, and develops three different MMSE-based optimization problems for the adaptive JCR waveform design. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2020 article

Beamforming optimization of wideband MISO systems in the presence of mutual coupling

2020 54TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 1338–1341.

By: S. Saab*, A. Mezghani* & R. Heath n

author keywords: Mutual Coupling; Multi-band; Beamforming; MISO; Optimization; Wideband Antenna Array
TL;DR: A mutual information based optimization for a two-port multiple-input single-output (MISO) antenna system is introduced and a complete circuit-level analysis of a compact MISO system in the wideband regime is developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2021

2020 journal article

Double-Sequence Frequency Synchronization for Wideband Millimeter-Wave Systems with Few-Bit ADCs

IEEE Transactions on Wireless Communications, 19(2), 1357–1372.

By: D. Zhu*, R. Bendlin*, S. Akoum*, A. Ghosh* & R. Heath*

Contributors: D. Zhu*, R. Bendlin*, S. Akoum*, A. Ghosh* & R. Heath*

author keywords: Synchronization; Frequency synchronization; Estimation; OFDM; Quantization (signal); Distortion; 3GPP; Low-resolution analog-to-digital converter (ADC); millimeter-wave (mmWave); frequency synchronization; 5G; sequence design
TL;DR: Numerical results reveal that the proposed algorithm can provide a flexible means to estimate CFO in a variety of low-resolution settings and is robust to the quantization distortion. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2020 article

Frequency Synchronization for Low Resolution Millimeter-Wave

2020 54TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 314–318.

By: R. Dreifuerst*, R. Heath n, M. Kulkarni* & J. Zhang*

author keywords: Carrier frequency offset; millimeter wave; deep learning; one-bit receivers
TL;DR: A jointly optimized neural architecture for frequency synchronization from configurable sequences and estimators that can improve estimation performance at low signal to noise ratio (SNR) by up to 8dB at little cost compared to the same estimator without the sequence generator. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: September 7, 2021

2020 journal article

Leveraging Sensing at the Infrastructure for mmWave Communication

IEEE COMMUNICATIONS MAGAZINE, 58(7), 84–89.

By: A. Ali*, N. Gonzalez-Prelcic n, R. Heath* & A. Ghosh

Contributors: A. Ali*, N. Gonzalez-Prelcic n, R. Heath* & A. Ghosh

author keywords: Intelligent sensors; Radar; Radar antennas; Roads; Millimeter wave communication; Antenna arrays
TL;DR: The use of infrastructure mounted sensors (which will be part of future smart cities) are motivated to aid establishing and maintaining mmWave vehicular communication links to demonstrate that information from these infrastructure sensors reduces the mmWave array configuration overhead. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (Web of Science; OpenAlex)
Sources: Web Of Science, NC State University Libraries, ORCID
Added: August 24, 2020

2020 article

Linear CE and 1-bit Quantized Precoding With Optimized Dithering

IEEE OPEN JOURNAL OF SIGNAL PROCESSING, Vol. 1, pp. 310–325.

By: A. Saxena*, A. Mezghani* & R. Heath n

author keywords: 1-bit quantized transmission; massive MIMO; downlink precoding; constant envelope transmission; 1-bit DACs; Bussgang decomposition
TL;DR: This paper analyzes downlink transmission for low complexity linear precoding and proposes the addition of correlated Gaussian dither to the precoded signal before quantization and subsequent transmission to improve performance for smaller numbers of downlink users. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: December 13, 2021

2020 journal article

Revisiting Research on Signal Processing for Communications in a Pandemic [From the Editor]

IEEE Signal Processing Magazine, 37(3), 3–5.

By: R. Heath*

Contributors: R. Heath*

UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
Source: ORCID
Added: September 11, 2020

2020 journal article

Spatial Channel Covariance Estimation for Hybrid Architectures Based on Tensor Decompositions

IEEE Transactions on Wireless Communications, 19(2), 1084–1097.

Contributors: S. Park*, A. Ali*, N. Gonzalez-Prelcic* & R. Heath*

author keywords: Tensor decomposition; spatial channel covariance; hybrid precoding; covariance estimation; millimeter wave
TL;DR: Numerical results and theoretical analysis show that the proposed tensor-based approach achieves higher estimation accuracy in comparison with prior compressive-sensing-based approaches or conventional angle-of-arrival estimation approaches. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2020 journal article

Submitting Columns and Forums to SPM [From the Editor]

IEEE Signal Processing Magazine, 37(1), 3–4.

By: R. Heath*

Contributors: R. Heath*

TL;DR: Reports on the process of submitting columns and forums to the publication and explains the content that is included therein. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2020 journal article

What Does an Editor-in-Chief of IEEE Signal Processing Magazine Do, Anyway? [From the Editor]

IEEE Signal Processing Magazine, 37(2), 3–4.

By: R. Heath*

Contributors: R. Heath*

TL;DR: Reports on the role and responsibilities of the Editor-in-Chief of the IEEE Signaling Processing Magazine are reported on. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

A Combined Waveform-Beamforming Design for Millimeter-Wave Joint Communication-Radar

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 1422–1426.

Contributors: P. Kumari*, N. Myers*, S. Vorobyov* & R. Heath*

TL;DR: Numerical results demonstrate that the JCR design enables the angle-of-arrival/departure estimation of short- range radar targets with a high successful recovery rate and a wide FoV at the expense of a slight loss in the communication rate. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

A Geometry-aided Message Passing Method for AoA-Based Short Range MIMO Channel Estimation

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2019-July.

By: J. Kaleva*, N. Myers*, A. Tölli* & R. Heath*

Contributors: J. Kaleva*, N. Myers*, A. Tölli* & R. Heath*

TL;DR: A geometry-aided message passing algorithm that exploits structure in short range line-of-sight (LoS) channels for spatial sub-Nyquist channel estimation and shows that the LoS MIMO channel can be reconstructed using the derived local AoA estimates and the known transceiver geometry. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

A Noncoherent Space-Time Code from Quantum Error Correction

2019 53rd Annual Conference on Information Sciences and Systems, CISS 2019.

By: S. Lanham*, T. Cuvelier*, C. Ostrove*, B. La Cour*, G. Ott* & R. Heath*

Contributors: S. Lanham*, T. Cuvelier*, C. Ostrove*, B. La Cour*, G. Ott* & R. Heath*

TL;DR: This work decomposes the multiple-input multiple-output (MIMO) channel into operators from quantum mechanics, and design a non-coherent space time code using the quantum stabilizer formalism, derive an optimal decoder, and analyze the former through a quantum mechanical lens. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Achievable rates of hybrid architectures with few-bit ADC receivers

WSA 2016 - 20th International ITG Workshop on Smart Antennas, 194–201. http://www.scopus.com/inward/record.url?eid=2-s2.0-85073566890&partnerID=MN8TOARS

By: J. Mo, A. Alkhateeb, S. Abu-Surra & R. Heath

Contributors: J. Mo, A. Alkhateeb, S. Abu-Surra & R. Heath

Source: ORCID
Added: September 11, 2020

2019 conference paper

Analysis of intelligent vehicular relaying in urban 5G+ millimeter-wave cellular deployments

2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings.

Contributors: V. Petrov*, D. Moltchanov*, S. Andreev* & R. Heath*

TL;DR: This paper develops a mathematical framework for the performance evaluation of mmWave vehicular relaying in a typical street deployment and analyzes and compares alternative connectivity strategies by quantifying the performance gains made available to smart devices in the presence of mm Wave relays. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Asymptotic Performance of Downlink Massive MIMO with 1-bit Quantized Zero-Forcing Precoding

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2019-July.

By: A. Saxena*, A. Mezghani*, R. Bendlin*, S. Nammi*, R. Heath*, J. Andrews*, A. Chopra*

Contributors: A. Saxena*, A. Mezghani*, R. Bendlin*, S. Nammi*, R. Heath*, J. Andrews*, A. Chopra*

TL;DR: The use of 1-bit DACs for downlink massive MIMO system can significantly reduce base station energy consumption and hardware complexity with the tradeoff being the introduction of nonlinear impairments in the transmitted signal. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Capacity Based Optimization of Compact Wideband Antennas

Proceedings of the 2019 9th IEEE-APS Topical Conference on Antennas and Propagation in Wireless Communications, APWC 2019, 322–325.

By: S. Saab*, A. Mezghani* & R. Heath*

Contributors: S. Saab*, A. Mezghani* & R. Heath*

TL;DR: A new single port Gamma matching network is presented that enhances the system's spectral efficiency apart from satisfying the antenna’s figures of merit and an in-depth analysis of the designed antenna is provided by using a circuit theoretic approach. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Capacity based analysis of a wideband SIMO system in the presence of mutual coupling

2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings.

By: S. Saab*, A. Mezghani* & R. Heath*

Contributors: S. Saab*, A. Mezghani* & R. Heath*

TL;DR: This paper introduces a system model that incorporates antenna mutual coupling in the wideband regime, and extracts the noise correlation matrices from two different antenna configurations (parallel and co-linear) to optimize the spacing in each scenario while maximizing the Shannon capacity under transmit power constraint. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO

IEEE International Conference on Communications, 2019-May.

Contributors: W. Shen*, L. Dai*, S. Han*, I. Chih-Lin* & R. Heath*

TL;DR: A 3D structured orthogonal matching pursuit (3D-SOMP) algorithm based channel estimation technique for downlink channel estimation for OTFS massive MIMO. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Channel Estimation for Orthogonal Time Frequency Space (OTFS) Massive MIMO

IEEE Transactions on Signal Processing, 67(16), 4204–4217.

By: W. Shen*, L. Dai*, J. An*, P. Fan* & R. Heath*

Contributors: W. Shen*, L. Dai*, J. An*, P. Fan* & R. Heath*

author keywords: OTFS; massive MIMO; channel estimation; high-mobility; sparsity
Source: ORCID
Added: September 11, 2020

2019 journal article

Connectivity and Blockage Effects in Millimeter-Wave Air-To-Everything Networks

IEEE Wireless Communications Letters, 8(2), 388–391.

By: K. Han*, K. Huang* & R. Heath*

Contributors: K. Han*, K. Huang* & R. Heath*

author keywords: A2X communications; mmWave networks; blockage effects; network connectivity; stochastic geometry; random shape theory
TL;DR: This letter proposes an analytical framework to define and characterise the connectivity for an aerial access point (AAP) by jointly using stochastic geometry and random shape theory, and yields guidelines on practical mmWave A2X networks deployment. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Deep Learning Propagation Models over Irregular Terrain

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2019-May, 4519–4523.

TL;DR: This work proposes to use machine learning to learn path gain based on terrain elevation as features, and implements different neural network architectures with dense and convolutional layers that could include effects difficult to describe with traditional models. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Detection and Channel Equalization with Deep Learning for Low Resolution MIMO Systems

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2018-October, 1836–1840.

By: A. Klautau*, N. Gonzalez-Prelcic*, A. Mezghani* & R. Heath*

Contributors: A. Klautau*, N. Gonzalez-Prelcic*, A. Mezghani* & R. Heath*

TL;DR: An exploration of DL as applied to design the physical layer for MIMO systems with low resolution analog-to-digital converters finds that DL still has potential but more efficient architectures are required, given the convergence problems associated with time-varying channels and 1-bit quantization. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Directional Frame Timing Synchronization in Wideband Millimeter-Wave Systems with Low-Resolution ADCs

IEEE Transactions on Wireless Communications, 18(11), 5350–5366.

By: D. Zhu*, R. Bendlin*, S. Akoum*, A. Ghosh* & R. Heath*

Contributors: D. Zhu*, R. Bendlin*, S. Akoum*, A. Ghosh* & R. Heath*

author keywords: Synchronization; Array signal processing; Quantization (signal); Correlation; OFDM; Antenna arrays; Millimeter-wave beamforming; timing synchronization; low-resolution ADC; synchronization SQNR; multi-beam probing
TL;DR: Numerical results reveal that for wideband mmWave systems with low-resolution ADCs, the timing synchronization performance of the proposed method outperforms the existing approaches due to the improvement in the received synchronization SQNR. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Extremely Large Aperture Massive MIMO: Low Complexity Receiver Architectures

2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings.

By: A. Amiri*, M. Angjelichinoski*, E. De Carvalho* & R. Heath*

Contributors: A. Amiri*, M. Angjelichinoski*, E. De Carvalho* & R. Heath*

TL;DR: Drawing inspiration from coded random access, one of the main contributions of the paper is the design of low complexity scheme that exploits the non-stationary nature of xMaMIMO systems and where the data processing is decentralized. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

FALP: Fast Beam Alignment in mmWave Systems with Low-Resolution Phase Shifters

IEEE Transactions on Communications, 67(12), 8739–8753.

By: N. Myers*, A. Mezghani* & R. Heath*

Contributors: N. Myers*, A. Mezghani* & R. Heath*

author keywords: Perfect arrays; 2D sparse recovery; one-bit phase shifters; magnetic resonance imaging; mm-Wave
TL;DR: A framework called FALP for Fast beam Alignment with Low-resolution Phase shifters, which uses an efficient set of antenna weight vectors to acquire channel measurements, and allows faster beam alignment when compared to exhaustive scan is presented. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Feedback from the IEEE Signal Processing Magazine Board Meeting in 2019

IEEE Signal Processing Magazine, 36(4), 3–4.

By: R. Heath*

Contributors: R. Heath*

TL;DR: This column summarizes some of the items that were discussed at the ICASSP 2019 editorial board meeting and provides a general overview of the state of the magazine. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Geometric Tracking of Vehicular mmWave Channels to Enable Machine Learning of Onboard Sensors

2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings.

By: E. Zochmann*, V. Va*, M. Rupp* & R. Heath*

Contributors: E. Zochmann*, V. Va*, M. Rupp* & R. Heath*

TL;DR: This work reformulates recent work on geometric-polar tracking into an efficient recursive version and proposes to track the MPCs geometrically, based on algorithms known as Doppler-bearing tracking. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Going Toward 6G [From the Editor]

IEEE Signal Processing Magazine, 36(3), 3–4.

By: R. Heath*

Contributors: R. Heath*

TL;DR: The expected goals that 5G has and has not achieved and what might be coming in 6G cellular networks are discussed. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Guest Editorial Ultra-Reliable Low-Latency Communications in Wireless Networks

IEEE Journal on Selected Areas in Communications, 37(4), 701–704.

Contributors: M. Kountouris*, P. Popovski*, I. Hou*, S. Buzzi*, A. Müller*, S. Sesia*, R. Heath*

TL;DR: Next generation wireless systems, mainly 5G and beyond, are designed to provide wireless connectivity for massive machine-type communications (mMTC) and to support ultra-reliable, low latency communication (URLLC) for mission-critical services. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

IEEE Signal Processing Magazine and University Rankings [From the Editor]

IEEE Signal Processing Magazine, 36(2), 3–4.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2019 journal article

Joint Channel-Estimation/Decoding With Frequency-Selective Channels and Few-Bit ADCs

IEEE Transactions on Signal Processing, 67(4), 899–914.

By: P. Sun*, Z. Wang*, R. Heath* & P. Schniter*

Contributors: P. Sun*, Z. Wang*, R. Heath* & P. Schniter*

author keywords: Low resolution analog-to-digital converter; millimeter wave; joint channel estimation and equalization; turbo equalization; approximate message passage
TL;DR: This paper proposes a fast and near-optimal approach to joint channel-estimation, equalization, and decoding of coded single-carrier transmissions over frequency-selective channels with few-bit analog-to-digital converters (ADCs). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

LIDAR Data for Deep Learning-Based mmWave Beam-Selection

IEEE Wireless Communications Letters, 8(3), 909–912.

By: A. Klautau*, N. Gonzalez-Prelcic* & R. Heath*

Contributors: A. Klautau*, N. González-Prelcic* & R. Heath*

author keywords: LIDAR; mmWave; machine learning; deep learning; convolutional networks
TL;DR: This letter shows how LIDAR data can be used for line-of-sight detection and to reduce the overhead in mmWave beam-selection in the proposed distributed architecture. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Linear Receivers in Non-Stationary Massive MIMO Channels with Visibility Regions

IEEE Wireless Communications Letters, 8(3), 885–888.

By: A. Ali*, E. De Carvalho* & R. Heath*

Contributors: A. Ali*, E. De Carvalho* & R. Heath*

author keywords: Non-stationary channel analysis; linear precoders; massive MIMO
TL;DR: A channel model based on VRs is relied on, which provides expressions of the signal-to-interference-plus-noise ratio (SINR) of conjugate beamforming and zero-forcing precoders and an approximate deterministic equivalent of the SINR of ZF precoder. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Linear Transmit Precoding with Optimized Dithering

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 838–842.

By: A. Saxena*, A. Mezghani*, R. Heath* & J. Andrews*

Contributors: A. Saxena*, A. Mezghani*, R. Heath* & J. Andrews*

TL;DR: This paper improves performance and reduce correlation among quantization noise components by adding colored dither to the signal before DAC and estimates the closed form asymptotic expression for per-user signal to quantization, interference and noise ratio (SQINR) of the received signal as a function of the dither power. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Localized Random Sampling for Robust Compressive Beam Alignment

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2019-May, 4644–4648.

By: N. Myers* & R. Heath*

Contributors: N. Myers* & R. Heath*

TL;DR: This paper shows that restricting the randomness in compressive sampling to local sets can achieve robustness to structured errors due to CFO and requires fewer channel measurements than comparable algorithms and has the same complexity as standard CS. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Low Resolution Millimeter Wave Radar: Bounds and Performance

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2018-October, 554–558.

By: K. Mazher*, A. Mezghani* & R. Heath*

Contributors: K. Mazher*, A. Mezghani* & R. Heath*

TL;DR: An analog preprocessing unit is designed to introduce correlated noise in the system and it is shown that the performance can be improved beyond the 2 dB limit and the potential of the proposed architecture to meet the requirements of high resolution sensing is demonstrated. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

MIMO Channel Estimation with Non-Ideal ADCS: Deep Learning Versus GAMP

IEEE International Workshop on Machine Learning for Signal Processing, MLSP, 2019-October.

By: M. Takeda*, A. Klautau*, A. Mezghani* & R. Heath*

Contributors: M. Takeda*, A. Klautau*, A. Mezghani* & R. Heath*

TL;DR: DL applied to channel estimation of MIMO systems with low resolution analog-to-digital converters (ADCs) indicates that a single neural network trained in a range of practical conditions is more robust to ADC impairments than a GAMP variant. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

MIMO beampattern and waveform design with low resolution DACs

2019 IEEE Radar Conference, RadarConf 2019.

By: A. Mezghani* & R. Heath*

Contributors: A. Mezghani* & R. Heath*

TL;DR: A sum of squared residuals (SSR) formulation for the beampattern and spectral shaping problem is solved based on the Generalized Approximate Message Passing (GAMP) algorithm and numerical results demonstrate good performance in terms of spectral shaping as well as cross-correlation properties of the different probing waveforms even with just 2-bit resolution per antenna. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Making a Good Feature Article Submission [From the Editor]

IEEE Signal Processing Magazine, 36(5), 3–4.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2019 journal article

Message Passing-Based Joint CFO and Channel Estimation in mmWave Systems with One-Bit ADCs

IEEE Transactions on Wireless Communications, 18(6), 3064–3077.

By: N. Myers* & R. Heath*

Contributors: N. Myers* & R. Heath*

author keywords: Wideband channel estimation; carrier frequency offset; compressed sensing; message passing; one-bit receivers; mm-Wave
TL;DR: This paper develops a joint carrier frequency offset and wideband channel estimation algorithm that is scalable across different hardware architectures and exploits the sparse nature of mmWave channels in the angle-delay domain, in addition to the compressibility of the phase error vector. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Millimeter wave V2X communications: Use cases and design considerations of beam management

Asia-Pacific Microwave Conference Proceedings, APMC, 2018-November, 183–185.

By: T. Shimizu*, V. Va*, G. Bansal* & R. Heath*

Contributors: T. Shimizu*, V. Va*, G. Bansal* & R. Heath*

TL;DR: Millimeter wave (mmWave) communication has the potential to meet the high data rate demand thanks to its wide bandwidth and this paper introduces potential use cases and elaborate on how to utilize low-frequency communication, onboard sensors mounted at vehicles and infrastructures, and DSRC messages to facilitate mmWave V2X beam management. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

MmWave Vehicular Beam Selection with Situational Awareness Using Machine Learning

IEEE Access, 7, 87479–87493.

By: Y. Wang*, A. Klautau, M. Ribero*, A. Soong* & R. Heath*

Contributors: Y. Wang*, A. Klautau, M. Ribero*, A. Soong* & R. Heath*

author keywords: MmWave; beam alignment; situational awareness; machine learning
TL;DR: The numerical results show that situational awareness-assisted beam selection using machine learning is able to provide beam prediction, with accuracy that increases with more complete knowledge of the environment. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

MmWave Vehicular Beam Training with Situational Awareness by Machine Learning

2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings.

By: Y. Wang*, A. Klautau*, M. Ribero*, M. Narasimha* & R. Heath*

Contributors: Y. Wang*, A. Klautau*, M. Ribero*, M. Narasimha* & R. Heath*

TL;DR: This paper proposes to learn the optimal beam pair index by exploiting the locations and sizes of the receiver and its neighboring vehicles, leveraging machine learning tools with the past beam training records. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Modeling and Analysis of MmWave V2X Networks with Vehicular Platoon Systems

IEEE Journal on Selected Areas in Communications, 37(12), 2851–2866.

Contributors: W. Yi*, Y. Liu*, Y. Deng*, A. Nallanathan* & R. Heath*

author keywords: Vehicle-to-everything; Probability density function; Millimeter wave communication; Numerical models; Stochastic processes; Matern hard-core process; millimeter wave; stochastic geometry; user association techniques; vehicular platoon systems; vehicle-to-everything networks
TL;DR: An effective spatial framework for mmWave vehicle-to-everything (V2X) networks with VPSs is proposed by utilizing stochastic geometry approaches and the numerical results illustrate that platoons outperform individual vehicles in terms of road spectral efficiency and the considered system is LOS interference-limited. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Multibeam for joint communication and radar sensing using steerable analog antenna arrays

IEEE Transactions on Vehicular Technology, 68(1), 671–685.

By: J. Zhang*, X. Huang*, Y. Guo, J. Yuan* & R. Heath*

Contributors: J. Zhang*, X. Huang*, Y. Guo, J. Yuan* & R. Heath*

author keywords: Joint communication and radar sensing; beamforming; multibeam; compressive sensing
TL;DR: A novel multibeam framework using steerable analog antenna arrays, which allows seamless integration of communication and sensing and develops sensing parameter estimation algorithms using conventional digital Fourier transform and one-dimensional compressive sensing techniques, matching well with the proposed framework. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

On the Violation of Hard Deadlines in Networked Control Systems

IEEE International Conference on Communications, 2019-May.

By: R. Jurdi*, J. Andrews* & R. Heath*

Contributors: R. Jurdi*, J. Andrews* & R. Heath*

TL;DR: A closed-form expression is calculated for the probability of hard-deadline violation when there are two agents and upper and lower bounds on this probability are found when there is more agents, which reflects the reliability of the system. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Online Learning for Position-Aided Millimeter Wave Beam Training

IEEE Access, 7, 30507–30526.

By: V. Va*, T. Shimizu*, G. Bansal* & R. Heath*

Contributors: V. Va*, T. Shimizu*, G. Bansal* & R. Heath*

author keywords: Millimeter wave; beam alignment; beam refinement; position-aided; online learning; multi-armed bandit; risk-aware learning
TL;DR: This paper uses a multi-armed bandit framework to develop the online learning algorithms for beam pair selection and refinement, which uses the upper confidence bound with a newly proposed risk-aware feature, while the beam refinement uses a modified optimistic optimization algorithm. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Optimal Frequency-Flat Precoding for Frequency-Selective Millimeter Wave Channels

IEEE Transactions on Wireless Communications, 18(11), 5098–5112.

Contributors: K. Venugopal*, N. Gonzalez-Prelcic* & R. Heath*

author keywords: Antenna arrays; MIMO communication; OFDM; Frequency estimation; Estimation; Receiving antennas; Transmitting antennas; Millimeter wave communications; hybrid architecture; compressive subspace estimation; antenna beam-squint; frequency-selective systems; optimal precoders
TL;DR: This paper evaluates the conditions and practical settings under which the dominant subspaces of the frequency-domain channel matrices are similar and shows that under some assumptions, semi-unitary frequency-flat precoding and combining are sufficient for low-scattering millimeter wave channels. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Organizing a Special Issue of IEEE SPM [From the Editor]

IEEE Signal Processing Magazine, 36(6), 3–4.

By: R. Heath*

Contributors: R. Heath*

TL;DR: The process of organizing a special issue (SI) for IEEE Signal Processing Magazine (SPM) is discussed and more information is provided about the decision-making process so that authors understand how to have an article accepted. (via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Outage of Periodic Downlink Wireless Networks with Hard Deadlines

IEEE Transactions on Communications, 67(2), 1238–1253.

author keywords: Ultra-reliability; low-latency; mission-critical; time-sensitive networking; machine-to-machine; industrial; IoT; 5G; URLLC; mMTC; TSN
TL;DR: A novel variable-rate transmission method is proposed that eliminates time overflow in a downlink periodic wireless communications system, where multiple access points cooperatively transmit packets to a number of devices, e.g., actuators in an industrial control system. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Performance of linear receivers for wideband massive MIMO with one-bit ADCs

WSA 2016 - 20th International ITG Workshop on Smart Antennas, 509–515. http://www.scopus.com/inward/record.url?eid=2-s2.0-85073575189&partnerID=MN8TOARS

By: C. Mollén, J. Choi, E. Larsson & R. Heath

Contributors: C. Mollén, J. Choi, E. Larsson & R. Heath

Source: ORCID
Added: September 11, 2020

2019 conference paper

Position and LIDAR-Aided mmWave Beam Selection using Deep Learning

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2019-July.

By: M. Dias*, A. Klautau*, N. Gonzalez-Prelcic* & R. Heath*

Contributors: M. Dias*, A. Klautau*, N. Gonzalez-Prelcic* & R. Heath*

TL;DR: Using co-simulation of communications and LIDAR in a vehicle-to-infrastructure (V2I) scenario, it is found that the distributed LidAR-based architecture provides robust performance irrespective of car penetration rate, outperforming the single LIDar at BS and position-based solutions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Robust analog precoding designs for millimeter wave MIMO transceivers

WSA 2016 - 20th International ITG Workshop on Smart Antennas, 8–15. http://www.scopus.com/inward/record.url?eid=2-s2.0-85073573477&partnerID=MN8TOARS

By: P. Xia, R. Heath & N. Prelcic

Contributors: P. Xia, R. Heath & N. Prelcic

Source: ORCID
Added: September 11, 2020

2019 conference paper

Selective OFDM transmission for simultaneous wireless information and power transfer

2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings.

By: R. Buckley* & R. Heath*

Contributors: R. Buckley* & R. Heath*

TL;DR: This paper proposes, analyzes, and compares the functionality of a novel selective orthogonal frequency-division multiplexing (OFDM) receiver architecture and evaluates the rate-energy (R-E) tradeoff of the system. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Short Range 3D MIMO mmWave Channel Reconstruction via Geometry-aided AoA Estimation

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 427–431.

By: J. Kaleva, N. Myers, A. Tolli, R. Heath* & U. Madhow

Contributors: J. Kaleva, N. Myers, A. Tolli, R. Heath* & U. Madhow

TL;DR: This work considers parametrized spatial channel estimation, where the known antenna array geometry is exploited to recover the angle-of-arrivals (AoAs) of the 3D multiple-input multiple-output (MIMO) channel and proposes a lower complexity message passing algorithm for short range channel estimation. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Side-information-aided non-coherent beam alignment design for millimeter wave systems

Proceedings of the International Symposium on Mobile Ad Hoc Networking and Computing (MobiHoc), 341–350.

By: Y. Zhang*, K. Patel*, S. Shakkottai* & R. Heath*

Contributors: Y. Zhang*, K. Patel*, S. Shakkottai* & R. Heath*

author keywords: 60 GHz; Beam Alignment; Non-Coherent; Compressive Phase Retrieval; Side Information; Prototyping; Calibration
TL;DR: This work leverage side information in the form of prior knowledge of the angular support of the propagation channel (direction information) to design a compressive sensing (CS) based beam alignment algorithm that enables generations of precise desired beam patterns. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 journal article

Spatial Covariance Estimation for Millimeter Wave Hybrid Systems Using Out-of-Band Information

IEEE Transactions on Wireless Communications, 18(12), 5471–5485.

By: A. Ali*, N. Gonzalez-Prelcic* & R. Heath*

Contributors: A. Ali*, N. Gonzalez-Prelcic* & R. Heath*

author keywords: Covariance estimation; out-of-band information; hybrid analog-digital precoding; millimeter-wave communications; subspace perturbation analysis
TL;DR: This work uses the sub-6 GHz channel covariance as an out-of-band side information for mmWave link configuration as well as proposed covariance estimation strategies to reduce the training overhead compared to the in-band only covariance estimating. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Spatial Zadoff-Chu Modulation for Rapid Beam Alignment in mmWave Phased Arrays

2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings.

By: N. Myers*, A. Mezghani* & R. Heath*

Contributors: N. Myers*, A. Mezghani* & R. Heath*

TL;DR: This work proposes to use shifted Zadoff-Chu (ZC) sequences in the antenna domain to realize efficient CS matrices for channel estimation or beam alignment and proves that the shifted ZC-based CS matrix satisfies the restricted isometry property with high probability. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Spatial channel covariance estimation for the hybrid architecture at a base station: A tensor-decomposition-based approach

2018 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2018 - Proceedings, 1008–1012.

Contributors: S. Park*, A. Ali*, N. Gonzalez-Prelcic* & R. Heath*

TL;DR: A spatial channel covariance estimation method for spatially sparse time-varying frequency-selective channels that leverages the fact that the channel can be represented as a low-rank higher-order tensor. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Swift-Link: A Compressive Beam Alignment Algorithm for Practical mmWave Radios

IEEE Transactions on Signal Processing, 67(4), 1104–1119.

By: N. Myers*, A. Mezghani* & R. Heath*

Contributors: N. Myers*, A. Mezghani* & R. Heath*

author keywords: Compressive beam training; carrier frequency offset; robust beam alignment; low-complexity sparse self-calibration; robust compressive sensing; mmWave
TL;DR: Swift-Link is presented, a fast beam alignment algorithm that is robust against the offset and uses fewer channel measurements than comparable CS algorithms and has analytical guarantees. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Tensor-based Estimation of mmWave MIMO Channels with Carrier Frequency Offset

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2019-May, 4155–4159.

By: L. Ribeiro*, A. De Almeida*, N. Myers* & R. Heath*

Contributors: L. Ribeiro*, A. De Almeida*, N. Myers* & R. Heath*

TL;DR: Simulation results indicate that the proposed joint CFO and channel estimation method based on tensor modeling and compressed sensing yields better channel recovery performance than the benchmark and that it is more robust to a small number of channel measurements. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 conference paper

Towards Robustness: Machine Learning for MmWave V2X with Situational Awareness

Conference Record - Asilomar Conference on Signals, Systems and Computers, 2018-October, 1577–1581.

By: Y. Wang*, M. Narasimha* & R. Heath*

Contributors: Y. Wang*, M. Narasimha* & R. Heath*

TL;DR: This paper proposes to recommend a set of candidate beam pairs using machine learning classification and ranking, based on the target vehicle’s situational awareness, to reduce overhead beam search overhead by 70% when seven beams are recommended. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2019 journal article

Vehicular applications of signal processing

IEEE Signal Processing Magazine, 36(1), 3–6.

By: R. Heath*

Contributors: R. Heath*

TL;DR: This editorial reviews some applications of signal processing in vehicular systems and focuses specifically on applications that are pertinent to automated driving (the so-called higher levels of automation). (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

5G MIMO data for machine learning: Application to beam-selection using deep learning

2018 Information Theory and Applications Workshop, ITA 2018.

By: A. Klautau*, P. Batista*, N. Gonzalez-Prelcic*, Y. Wang* & R. Heath*

Contributors: A. Klautau*, P. Batista*, N. Gonzalez-Prelcic*, Y. Wang* & R. Heath*

TL;DR: A methodology is presented that combines a vehicle traffic simulator with a ray-tracing simulator, to generate channel realizations representing 5G scenarios with mobility of both transceivers and objects to investigate beam-selection techniques on vehicle-to-infrastructure using millimeter waves. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

A Low Complexity ML Detection for Uplink Massive MIMO Systems with One-Bit ADCs

IEEE Vehicular Technology Conference, 2018-June, 1–5.

By: Y. Jeon*, N. Lee*, S. Hong* & R. Heath*

Contributors: Y. Jeon*, N. Lee*, S. Hong* & R. Heath*

TL;DR: A low complexity maximum likelihood detection (MLD) algorithm called one-bit-sphere- decoding for an uplink massive multiple-input multiple- output (MIMO) system with one- bit analog-to-digital converters (ADCs). (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

A Model for Infrastructure Sharing in mmWave Cellular Networks

IEEE International Conference on Communications, 2018-May.

By: R. Jurdi, A. Gupta, J. Andrews & R. Heath*

Contributors: R. Jurdi, A. Gupta, J. Andrews & R. Heath*

TL;DR: An interesting observation is that sharing spectrum and infrastructure yields a higher rate coverage probability for higher rate thresholds, but has a lower coverage for lower thresholds, which suggests that networks catering for low-rate, limited-QoS devices, are at a disadvantage when Spectrum and infrastructure are shared. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

A New Look at Physical Layer Security, Caching, and Wireless Energy Harvesting for Heterogeneous Ultra-Dense Networks

IEEE Communications Magazine, 56(6), 49–55.

By: L. Wang*, K. Wong*, S. Jin, G. Zheng* & R. Heath*

Contributors: L. Wang*, K. Wong*, S. Jin, G. Zheng* & R. Heath*

TL;DR: The benefits of heterogeneous ultra-dense network architecture are investigated from the perspectives of three promising technologies, physical layer security, caching, and wireless energy harvesting, and opportunities and challenges are identified to advance the research in this emerging network. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

A UAV-Based Traffic Monitoring System - Invited Paper

IEEE Vehicular Technology Conference, 2018-June, 1–5.

Contributors: H. Niu*, N. González-Prelcic* & R. Heath*

TL;DR: An aerial traffic monitoring system that uses unmanned aerial vehicles and onboard cameras to capture traffic video, which is sent and processed in the cloud and concluded that the designed system can monitor traffic with high accuracy and flexibility. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

A compressive sensing-maximum likelihood approach for off-grid wideband channel estimation at mmWave

2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2017, 2017-December, 1–5.

Contributors: J. Rodríguez-Fernández*, N. González-Prelcic* & R. Heath*

TL;DR: A mixed compressed sensing-maximum likelihood algorithm that uses continuous dictionaries to estimate the channel, enhancing estimation performance without resorting to very large dictionaries. (via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Algorithms for the construction of incoherent frames under various design constraints

Signal Processing, 152, 363–372.

Contributors: C. Rusu*, N. González-Prelcic* & R. Heath*

author keywords: Grassmannian frames; Coherence; Compressed sensing
Source: ORCID
Added: September 11, 2020

2018 journal article

Analysis of Blockage Sensing by Radars in Random Cellular Networks

IEEE Signal Processing Letters, 25(11), 1620–1624.

By: J. Park* & R. Heath*

Contributors: J. Park* & R. Heath*

author keywords: Radars; stochastic geometry; cellular networks; blockage sensing
TL;DR: The detection probability of blockage sensing by radars deployed on towers in cellular networks is characterized by modeling radar and blockage locations using stochastic geometry and derive the detection probability as a function of the system parameters. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Automotive radar using IEEE 802.11p signals

IEEE Wireless Communications and Networking Conference, WCNC, 2018-April, 1–6.

By: K. Usman*, R. Heath*, T. Shimizu & G. Bansal

Contributors: K. Usman*, R. Heath*, T. Shimizu & G. Bansal

TL;DR: This paper develops a framework for using the dedicated short range communication (DSRC) waveform for the purposes of automotive radar using the frequency domain channel estimates generated by the OFDM physical layer used in DSRC. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Beamforming in Millimeter Wave Systems: Prototyping and Measurement Results

IEEE Vehicular Technology Conference, 2018-August.

Contributors: C. Scarborough*, K. Venugopal*, A. Alkhateeb* & R. Heath*

TL;DR: The design of a proof-of-concept prototype that demonstrates the feasibility of large antenna array beamforming gains in practice is explained in detail and a mmWave system with digitally controlled analog front-end is developed. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Channel Estimation and Hybrid Precoding for Frequency Selective Multiuser mmWave MIMO Systems

IEEE Journal on Selected Topics in Signal Processing, 12(2), 353–367.

By: J. Gonzalez-Coma*, J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic*, L. Castedo* & R. Heath*

Contributors: J. Gonzalez-Coma*, J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic*, L. Castedo* & R. Heath*

author keywords: Antenna arrays; compressive estimation; frequency selective channel; hybrid precoding; millimeter wave MIMO; MMSE; multiuser; OFDM
TL;DR: A system that uses compressive estimation on the uplink to configure precoders and combiners for the downlink in a millimeter wave multiuser multiple-input multiple-output system is developed. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Channel Estimation in Broadband Millimeter Wave MIMO Systems with Few-Bit ADCs

IEEE Transactions on Signal Processing, 66(5), 1141–1154.

By: J. Mo*, P. Schniter* & R. Heath*

Contributors: J. Mo*, P. Schniter* & R. Heath*

author keywords: Low resolution analog-to-digital converter; millimeter wave; channel estimation; approximate message passing
TL;DR: A broadband channel estimation algorithm for millimeter wave (mmWave) multiple input multiple output (MIMO) systems with few-bit analog-to-digital converters (ADCs) that exploits the joint sparsity of the mmWave MIMO channel in the angle and delay domains is developed. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Channel estimation for millimeter wave MIMO systems in the presence of CFO uncertainties

IEEE International Conference on Communications, 2018-May.

Contributors: J. Rodríguez-Fernández*, N. González-Prelcic* & R. Heath*

TL;DR: Simulation results show that small estimation errors and near-optimal values of spectral efficiency can be achieved without incurring in significant overhead and/or computational complexity. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Channel feedback based on AoD-adaptive subspace codebook in FDD massive MIMO systems

IEEE Transactions on Communications, 66(11), 5235–5248.

By: W. Shen*, L. Dai*, B. Shim*, Z. Wang & R. Heath*

Contributors: W. Shen*, L. Dai*, B. Shim*, Z. Wang & R. Heath*

author keywords: Massive MIMO; FDD; channel feedback; subspace codebook; AoD
TL;DR: This work proposes an angle-of-departure (AoD) adaptive subspace codebook for channel feedback in FDD massive MIMO systems and compares the proposed quantized feedback technique using the AoD-adaptive sub space codebook with a comparable analog feedback method. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Compressive Sensing for Millimeter Wave Antenna Array Diagnosis

IEEE Transactions on Communications, 66(6), 2708–2721.

By: M. Eltayeb*, T. Al-Naffouri* & R. Heath*

Contributors: M. Eltayeb*, T. Al-Naffouri* & R. Heath*

author keywords: Antenna arrays; fault diagnosis; compressed sensing; millimeter wave communication
TL;DR: Numerical results show that the proposed techniques provide satisfactory results in terms of fault detection with reduced number of measurements (diagnosis time) provided that the number of blockages is small compared to the array size. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Directional timing synchronization in wideband millimeter wave cellular systems with low-resolution ADCs

Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017, 2017-October, 37–41.

By: D. Zhu* & R. Heath*

Contributors: D. Zhu* & R. Heath*

TL;DR: A new beamforming strategy for millimeter-wave systems to improve the frame timing synchronization performance under low-resolution analog-to-digital converters outperforms the existing approach due to the improvement in the received synchronization SQNR. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Ergodic Rate of Millimeter Wave Ad Hoc Networks

IEEE Transactions on Wireless Communications, 17(2), 914–926.

By: A. Thornburg* & R. Heath*

Contributors: A. Thornburg* & R. Heath*

author keywords: Millimeter wave communication; wireless networks; ad hoc networks; device-to-device communication
TL;DR: The results show that even relatively small errors in alignment can lead to significant ergodic rate reduction, and a scaling law for uniform mm-wave ad hoc networks is derived and a heuristic scaling for clustered networks is proposed. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Erratum: Deep convolutional neural models for picture-quality prediction (IEEE Signal Processing Magazine (2017) 34: 6 (130-141) DOI: 10.1109/MSP.2017.2736018)

IEEE Signal Processing Magazine, 35(5), 186.

By: R. Heath* & N. Gonzalez-Prelcic

Contributors: R. Heath* & N. Gonzalez-Prelcic

Source: ORCID
Added: September 11, 2020

2018 conference paper

Fast link configuration for mmwave multiuser MIMO downlink using spatial AoD angular supports

IEEE Vehicular Technology Conference, 2017-September, 1–2.

By: G. Lee* & R. Heath*

Contributors: G. Lee* & R. Heath*

TL;DR: This paper assumes that from the sensors (aside from the relevant technology) the angular support information for the LoS link of each vehicle is known to the RSU in prior and it proposes a fast link configuration method using theangular support information. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Feedback Design for Multi-Antenna K-Tier Heterogeneous Downlink Cellular Networks

IEEE Transactions on Wireless Communications, 17(6), 3861–3876.

By: J. Park*, N. Lee* & R. Heath*

Contributors: J. Park*, N. Lee* & R. Heath*

author keywords: Heterogeneous cellular network; limited feedback; stochastic geometry
TL;DR: In the non-cooperative case, the feedback is only useful in a particular tier if the mean interference is small enough; in the cooperative case, allocating more feedback to stronger intra-cluster BSs is efficient; and in both cases, the obtained solutions do not change depending on the instantaneous signal-to-interference ratio. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Forward Collision Vehicular Radar with IEEE 802.11: Feasibility Demonstration Through Measurements

IEEE Transactions on Vehicular Technology, 67(2), 1404–1416.

By: R. Daniels, E. Yeh* & R. Heath*

Contributors: R. Daniels, E. Yeh* & R. Heath*

author keywords: Automotive applications; OFDM modulation; radar applications; radar
TL;DR: The results of this paper show that the solution delivers sufficient accuracy and reliability for vehicular RADAR if the largest bandwidth available to IEEE 802.11p is used, which indicates significant potential for industrial devices with joint vehicular communications and radar capabilities. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Frequency-Domain Compressive Channel Estimation for Frequency-Selective Hybrid Millimeter Wave MIMO Systems

IEEE Transactions on Wireless Communications, 17(5), 2946–2960.

By: J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic*, K. Venugopal* & R. Heath*

Contributors: J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic*, K. Venugopal* & R. Heath*

author keywords: Wideband channel estimation; millimeter wave MIMO; hybrid architecture
TL;DR: This paper considers a frequency-selective mm-wave channel and proposes compressed sensing-based strategies to estimate the channel in the frequency domain and evaluates different algorithms and compute their complexity to expose tradeoffs in complexity overhead performance as compared with those of previous approaches. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Frequency-domain wideband channel estimation and tracking for hybrid MIMO systems

Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017, 2017-October, 1829–1833.

By: J. Rodriguez-Fernandez*, N. Gonzaiez-Prelcic* & R. Heath*

Contributors: J. Rodriguez-Fernandez*, N. Gonzaiez-Prelcic* & R. Heath*

TL;DR: An algorithm for channel tracking which updates the channel estimation in the previous frame reducing the training overhead required and an strategy to update the precoders and combiners from the output of the channel tracking stage is developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

GlobalSIP and beyond [From the Editor]

IEEE Signal Processing Magazine, 35(5), 3–15.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 journal article

High-resolution angle tracking for mobile wideband millimeter-wave systems with antenna array calibration

IEEE Transactions on Wireless Communications, 17(11), 7173–7189.

Contributors: D. Zhu*, J. Choi*, Q. Cheng*, W. Xiao* & R. Heath*

author keywords: Millimeter-wave systems; auxiliary beam pair; angle/beam tracking; antenna array calibration; high mobility
TL;DR: Numerical results reveal that by employing the proposed methods, good angle tracking performance can be achieved under various antenna array configurations, channel models, and mobility conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Highlights from the IEEE SPM's Editorial Board Meeting [From the Editor]

IEEE Signal Processing Magazine, 35(4), 3–4.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 journal article

IEEE 802.11ad-Based Radar: An Approach to Joint Vehicular Communication-Radar System

IEEE Transactions on Vehicular Technology, 67(4), 3012–3027.

Contributors: P. Kumari*, J. Choi*, N. Gonzalez-Prelcic* & R. Heath*

author keywords: Automotive radar; IEEE 802.11ad; millimeter wave communication; millimeter wave radar; performance analysis; vehicular communications
TL;DR: The proposed IEEE 802.11ad-based radar meets the minimum accuracy/resolution requirement of range and velocity estimates for LRR applications and exploits the preamble of a single-carrier physical layer frame, which consists of Golay complementary sequences with good correlation properties that make it suitable for radar. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Identifying coverage holes: Where to densify?

Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017, 2017-October, 1417–1421.

By: R. Jurdi*, J. Andrews*, D. Parsons & R. Heath*

Contributors: R. Jurdi*, J. Andrews*, D. Parsons & R. Heath*

TL;DR: A methodology to identify coverage holes in cellular markets, given demographic and socio-economic information of the population, detailed knowledge of the current macro-cellular infrastructure, and the spectrum capabilities of a cellular operator is developed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Impact of correlation between link blockages on macro-diversity gains in mmWave Networks

2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings, 1–6.

By: A. Gupta*, J. Andrews* & R. Heath*

Contributors: A. Gupta*, J. Andrews* & R. Heath*

TL;DR: A framework for determining the LOS probability when taking into account the correlation between blockages is developed, showing that the BS density must scale as the square of the blockage density to maintain a given level of LOS probabilities. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Impact of measurement noise on millimeter wave beam alignment using beam subsets

IEEE Wireless Communications Letters, 7(5), 784–787.

By: V. Va*, J. Choi*, T. Shimizu*, G. Bansal* & R. Heath*

Contributors: V. Va*, J. Choi*, T. Shimizu*, G. Bansal* & R. Heath*

author keywords: Millimeter wave; vehicular communication; 5G mobile communication; position-aided beam alignment
TL;DR: This letter derives bounds on performance degradation due to measurement noise in millimeter wave beam alignment methods that train a subset of beam pairs from the union bound and pairwise beam selection error for a wideband channel. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Introducing the New Editorial Team of IEEE Signaling Processing Magazine [From the Editor]

IEEE Signal Processing Magazine, 35(3), 4–5.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 journal article

Inverse multipath fingerprinting for millimeter wave V2I beam alignment

IEEE Transactions on Vehicular Technology, 67(5), 4042–4058.

By: V. Va*, J. Choi*, T. Shimizu*, G. Bansal* & R. Heath*

Contributors: V. Va*, J. Choi*, T. Shimizu*, G. Bansal* & R. Heath*

author keywords: Millimeter wave; vehicular communication; 5G mobile communication; beam alignment; position-aided
TL;DR: This paper proposes to use the vehicle's position to query a multipath fingerprint database, which provides prior knowledge of potential pointing directions for reliable beam alignment, the inverse of fingerprinting localization. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Joint CFO and channel estimation in millimeter wave systems with one-bit ADCs

2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2017, 2017-December, 1–5.

By: N. Myers* & R. Heath*

Contributors: N. Myers* & R. Heath*

Source: ORCID
Added: September 11, 2020

2018 conference paper

Joint channel-estimation/decoding with frequency-selective channels and few-bit ADCs

Conference Record of 51st Asilomar Conference on Signals, Systems and Computers, ACSSC 2017, 2017-October, 1824–1828.

By: P. Sun*, Z. Wang*, R. Heath* & P. Schniter*

Contributors: P. Sun*, Z. Wang*, R. Heath* & P. Schniter*

TL;DR: This work proposes a fast and near-optimal approach to joint channel-estimation, equalization, and decoding of coded single-carrier transmissions over frequency-selective channels with few-bit analog-to-digital converters (ADCs). (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Limited Feedback in Single and Multi-User MIMO Systems with Finite-Bit ADCs

IEEE Transactions on Wireless Communications, 17(5), 3284–3297.

By: J. Mo* & R. Heath*

Contributors: J. Mo* & R. Heath*

author keywords: Low resolution analog-to-digital converter; mm-wave; massive MIMO; limited feedback
Source: ORCID
Added: September 11, 2020

2018 conference paper

Low Resolution Sampling for Joint Millimeter-Wave MIMO Communication-Radar

2018 IEEE Statistical Signal Processing Workshop, SSP 2018, 801–805.

Contributors: P. Kumari*, K. Mazher*, A. Mezghani* & R. Heath*

TL;DR: Numerical results demonstrate the potential of the millimeter-wave MIMO concept to meet the challenging requirements of next-generation vehicles. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Low-Overhead Receiver-Side Channel Tracking for Mmwave Mimo

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2018-April, 3859–3863.

By: K. Upadhya*, S. Vorobyov* & R. Heath*

Contributors: K. Upadhya*, S. Vorobyov* & R. Heath*

TL;DR: Under certain conditions on the transmit precoder, it is shown that the receiver-side channel subspace can be estimated during data transmission without knowing the structure of the precoder or the transmitted data. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Macrodiversity in Cellular Networks with Random Blockages

IEEE Transactions on Wireless Communications, 17(2), 996–1010.

By: A. Gupta*, J. Andrews* & R. Heath*

Contributors: A. Gupta*, J. Andrews* & R. Heath*

TL;DR: A framework for determining the LOS probability as a function of the number of BSs is developed, when taking into account the correlation between blockages: for example, a single blockage close to the device—including the user’s own body—could block multiple BSs. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Making Papers, Code, and Data Accessible [From the Editor]

IEEE Signal Processing Magazine, 35(6), 3–4.

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 journal article

Millimeter Wave Beam-Selection Using Out-of-Band Spatial Information

IEEE Transactions on Wireless Communications, 17(2), 1038–1052.

By: A. Ali*, N. Gonzalez-Prelcic* & R. Heath*

Contributors: A. Ali*, N. González-Prelcic* & R. Heath*

author keywords: Millimeter wave communications; beam-selection; out-of-band information; weighted compressed sensing; structured random codebooks
TL;DR: This paper outlines a strategy to extract spatial information from sub-6 GHz and its use in mmWave compressed beam-selection and outlines a structured precoder/combiner design to tailor the training to out-of-band information. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

MmWave Beam Prediction with Situational Awareness: A Machine Learning Approach

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2018-June.

By: Y. Wang*, M. Narasimha* & R. Heath*

Contributors: Y. Wang*, M. Narasimha* & R. Heath*

TL;DR: This paper combines machine learning tools and situational awareness to learn the beam information (power, optimal beam index, etc) from past observations and leverages regression models to predict the received power with different beam power quantizations. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

MmWave MU-MINO for aerial networks

Proceedings of the International Symposium on Wireless Communication Systems, 2018-August.

By: T. Cuvelier* & R. Heath*

Contributors: T. Cuvelier* & R. Heath*

Source: ORCID
Added: September 11, 2020

2018 journal article

MmWave Vehicle-to-Infrastructure Communication: Analysis of Urban Microcellular Networks

IEEE Transactions on Vehicular Technology, 67(8), 7086–7100.

Contributors: Y. Wang*, K. Venugopal*, A. Molisch* & R. Heath*

author keywords: Coverage analysis; Manhattan microcells; mmWave; vehicle-to-infrastructure
TL;DR: A pathloss model inspired by measurements is used, which uses a Manhattan distance path Loss model and accounts for differences in pathloss exponents and losses when turning corners, and derives the coverage probability under certain BS association rules to obtain closed-form solutions without much complexity. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Multi-cell coordination in K-tier heterogeneous downlink cellular networks: Dynamic clustering and feedback allocation

2018 16th International Symposium on Modeling and Optimization in Mobile, Ad Hoc, and Wireless Networks, WiOpt 2018.

By: J. Park*, N. Lee & R. Heath*

Contributors: J. Park*, N. Lee & R. Heath*

TL;DR: The ergodic spectral efficiency of a cooperative type of K-tier heterogeneous networks (HetNets) with limited feedback is characterized and a feedback allocation problem is formulated and a solution to improve the spectral efficiency is obtained. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

One-bit sphere decoding for uplink massive MIMO systems with one-bit ADCs

IEEE Transactions on Wireless Communications, 17(7), 4509–4521.

By: Y. Jeon*, N. Lee*, S. Hong* & R. Heath*

Contributors: Y. Jeon*, N. Lee*, S. Hong* & R. Heath*

author keywords: Massive MIMO; one-bit ADC; multiuser detection; sphere decoding; maximum likelihood detection
TL;DR: Simulation results demonstrate that the proposed algorithm achieves near-MLD performance, while reducing the computational complexity compared to the existing MLD method. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Optimization of 2-element arrays of circular patch antennas in spatially correlated MIMO channels

2006 International Waveform Diversity and Design Conference, WDD 2006 - Proceedings, 2018-January, 1–9.

By: A. Forenza*, G. Wan* & R. Heath*

Contributors: A. Forenza*, G. Wan* & R. Heath*

TL;DR: A new definition of the spatial correlation coefficient suitable for analysis of MIMO arrays exploiting pattern diversity, in clustered channel models is introduced and the average and outage capacity performance of CPAs in realistic propagation scenarios are derived. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Optimization of power transfer efficiency and energy efficiency for wireless-powered systems with massive MIMO

IEEE Transactions on Wireless Communications, 17(11), 7159–7172.

By: T. Khan*, A. Yazdan* & R. Heath*

Contributors: T. Khan*, A. Yazdan* & R. Heath*

author keywords: Energy efficiency; power transfer efficiency; wireless power transfer; wireless-powered communications; massive MIMO; energy harvesting; wireless information and power transfer
TL;DR: The overall power transfer efficiency (PTE) and the energy efficiency (EE) of a wirelessly powered massive MIMO system are investigated, where a multi-antenna base-station (BS) uses wireless energy transfer to charge single-ant Jenna energy harvesting users on the downlink. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 journal article

Out-of-Band Radiation from Large Antenna Arrays

IEEE Communications Magazine, 56(4), 196–203.

By: C. Mollen*, E. Larsson*, U. Gustavsson*, T. Eriksson* & R. Heath*

Contributors: C. Mollen*, E. Larsson*, U. Gustavsson*, T. Eriksson* & R. Heath*

TL;DR: It is drawn that, compared to legacy systems, less stringent linearity requirements can be used in many systems with large arrays by virtue of the lower transmit power needed. (via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy (OpenAlex)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Position-aided compressive channel estimation and tracking for millimeter wave multi-user MIMO Air-to-Air Communications

2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings, 1–6.

Contributors: J. Rodríguez-Fernández*, N. González-Prelcic* & R. Heath*

TL;DR: A channel estimation and tracking strategy based on compressed sensing tools is developed which introduces a low overhead, even when operating in the high mobility aerial scenario, and provides channel state information (CSI) of enough quality to obtain and maintain near-optimal values of spectral efficiency. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Position-aided millimeter wave V2I beam alignment: A learning-to-rank approach

IEEE International Symposium on Personal, Indoor and Mobile Radio Communications, PIMRC, 2017-October, 1–5.

By: V. Va*, T. Shimizu*, G. Bansal* & R. Heath*

Contributors: V. Va*, T. Shimizu*, G. Bansal* & R. Heath*

TL;DR: This paper proposes to leverage a vehicle's position along with past beam measurements to rank desirable pointing directions that can reduce the required beam training to a small set of pointing directions. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Research Gems Found Digging with Industry [From the Editor]

IEEE Signal Processing Magazine, 35(2).

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 conference paper

Securing mmWave vehicular communication links with multiple transmit antennas

2018 IEEE International Conference on Communications Workshops, ICC Workshops 2018 - Proceedings, 1–6.

By: M. Eltayeb* & R. Heath*

Contributors: M. Eltayeb* & R. Heath*

TL;DR: Theoretical and simulation results demonstrate the validity and effectiveness of the proposed technique and show that high secrecy throughput can be achieved when compared to directional array transmission techniques. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Sparsity-aware adaptive beamforming design for IEEE 802.11ad-based joint communication-radar

2018 IEEE Radar Conference, RadarConf 2018, 923–928.

By: P. Kumari*, M. Eltayeb* & R. Heath*

Contributors: P. Kumari*, M. Eltayeb* & R. Heath*

TL;DR: A sparsity-aware beamforming design is proposed that permits a trade-off between communication rate and radar detection/estimation performance in the angular domain and subset size optimization enables the detection of short-range radar targets with high probability and angular resolution in a wide FoV at the expense of a slight hit in the communication data rate. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Spatial Channel Covariance Estimation for the Hybrid MIMO Architecture: A Compressive Sensing-Based Approach

IEEE Transactions on Wireless Communications, 17(12), 8047–8062.

By: S. Park* & R. Heath*

Contributors: S. Park* & R. Heath*

author keywords: Spatial channel covariance; hybrid precoding; compressive sensing
TL;DR: Two approaches to covariance estimation based on compressive sensing techniques are proposed, one is to apply a time-varying sensing matrix, and the other is to exploit the prior knowledge that the covariance matrix is Hermitian. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 journal article

Taking the Next Step for IEEE Signal Processing Magazine [From the Editor]

IEEE Signal Processing Magazine, 35(1).

By: R. Heath*

Contributors: R. Heath*

Source: ORCID
Added: September 11, 2020

2018 conference paper

The information and wave-theoretic limits of analog beamforming

2018 Information Theory and Applications Workshop, ITA 2018.

By: A. Mezghani* & R. Heath*

Contributors: A. Mezghani* & R. Heath*

TL;DR: This work considers a broadband frequency dependent array model that explicitly includes incremental time shifts instead of phase shifts between the individual antennas and incorporates a physically defined radiated power and presents a novel joint approach for designing the optimal waveform and beamforming vector for analog beamforming. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Tracking abruptly changing channels in mmWave systems using overlaid data and training

2017 IEEE 7th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2017, 2017-December, 1–5.

By: K. Upadhya*, R. Heath* & S. Vorobyov*

Contributors: K. Upadhya*, R. Heath* & S. Vorobyov*

TL;DR: A sparse Bayesian learning-based approach is employed for jointly estimating the channel and data at the receiver by overlaying pilot and data transmissions in millimeter-wave multiple-input multiple-output links. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Vehicle-to-Vehicle Communication for Autonomous Vehicles: Safety and Maneuver Planning

IEEE Vehicular Technology Conference, 2018-August.

Contributors: A. Ali*, L. Jiang*, S. Patil*, J. Li* & R. Heath*

TL;DR: This work quantifies the gains vehicle-to-vehicle (V2V) communication can provide for AVs and indicates that V2V can reduce a significant fraction of AV collisions and considerably reduce the maneuver completion time. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2018 conference paper

Virtual Pulse Design for IEEE 802.11AD-Based Joint Communication-Radar

ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2018-April, 3315–3319.

By: P. Kumari*, R. Heath* & S. Vorobyov*

Contributors: P. Kumari*, R. Heath* & S. Vorobyov*

TL;DR: A coprime-based pulse design approach for IEEE 802.11ad-based radar is proposed that uses only a few non-uniformly placed preambles to construct several virtual pulses for enhancing the velocity estimation accu-racy/resolution as compared to the conventional approach without sacrificing the communication data rate. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2017 journal article

A Stochastic Geometry Analysis of Large-Scale Cooperative Wireless Networks Powered by Energy Harvesting

IEEE Transactions on Communications, 65(8), 3343–3358.

By: T. Khan*, P. Orlik*, K. Kim*, R. Heath* & K. Sawa*

Contributors: T. Khan*, P. Orlik*, K. Kim*, R. Heath* & K. Sawa*

author keywords: Energy harvesting; stochastic geometry; cooperative wireless networks
TL;DR: Numerical results show that a small cluster size (typically 3 or smaller) optimizes the network-level performance and the utility of having a large energy buffer increases with the energy harvesting rate as well as with the cluster size in sufficiently dense networks. (via Semantic Scholar)
Source: ORCID
Added: September 11, 2020

2017 conference paper

A compressive channel estimation technique robust to synchronization impairments

IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2017-July, 1–5.

By: