Works Published in 2017
Displaying works 101 - 120 of 534 in total
Sorted by most recent date added to the index first, which may not be the same as publication date order.
2017 journal article
Hybrid Architectures with Few-Bit ADC Receivers: Achievable Rates and Energy-Rate Tradeoffs
IEEE Transactions on Wireless Communications, 16(4), 2274–2287.
Contributors: J. Mo *, A. Alkhateeb *, S. Abu-Surra* & R. Heath*
author keywords: Massive MIMO; millimeter wave communication; analog-to-digital converters; hybrid analog/digital architecture
TL;DR:
A generalized hybrid architecture with a small number of RF chains and a finite number of ADC bits is proposed, and numerical simulations show that coarse ADC quantization is optimal under various system configurations.
(via Semantic Scholar)
doi.org (publisher)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 journal article
Hybrid MMSE Precoding and Combining Designs for mmWave Multiuser Systems
IEEE Access, 5, 19167–19181.
Contributors: D. Nguyen *, L. Le*, T. Le-Ngoc * & R. Heath*
author keywords: Millimeter wave; multiple-input multiple-output (MIMO); antenna arrays; beamforming; precoding; sparse reconstruction; minimum mean squared-error (MMSE)
TL;DR:
Simulation results show the performance advantages of the proposed precoding/combining designs for mmWave multiuser systems, based on the mean-squared error (MSE) criteria.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Frequency selective multiuser hybrid precoding for mmWave systems with imperfect channel knowledge
Conference Record - Asilomar Conference on Signals, Systems and Computers, 291–295.
Contributors: J. González-Coma *, N. González-Prelcic *, L. Castedo * & R. Heath*
TL;DR:
In this work, the precoders/combiners for a multiuser mmWave system considering a frequency selective channel model are designed via an iterative MMSE algorithm, which obtains a close performance to the all-digital solution in terms of achievable rate.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Framework for an Innovative Perceptive Mobile Network Using Joint Communication and Sensing
IEEE Vehicular Technology Conference, 2017-June.
Contributors: J. Zhang *, A. Cantoni*, X. Huang *, Y. Guo * & R. Heath*
TL;DR:
An innovative perceptive mobile (i.e. cellular) network that integrates sensing with communication, and supports new applications widely in transportation, surveillance and environmental sensing is developed.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
FER Estimation in a Memoryless BSC with Variable Frame Length and Unreliable ACK/NAK Feedback
IEEE Transactions on Wireless Communications, 16(6), 3661–3673.
Contributors: A. Rico-Alvarino*, R. Lopez-Valcarce *, C. Mosquera * & R. Heath*
author keywords: FER estimation; maximum likelihood; unreliable feedback; link adaptation; expectation-maximization
TL;DR:
Although the main focus is on maximum likelihood (ML) estimation, there are also low-complexity schemes performing close to optimal in some scenarios and estimators developed that incorporate the impairment of unreliable observations by considering noisy ACK/NAK feedback links.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
Exploiting spatial channel covariance for hybrid precoding in massive MIMO systems
IEEE Transactions on Signal Processing, 65(14), 3818–3832.
author keywords: Hybrid precoding; multi-user MIMO; massive MIMO; covariance matrix; cellular communication; antenna arrays
TL;DR:
This work applies a regularized zero-forcing precoder for the baseband precoding matrix to find an unconstrained analog precoder that maximizes signal-to-leakage-plus-noise ratio (SLNR) while ignoring analog phase shifter constraints.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
Exploiting antenna motion for faster initialization of centimeter-accurate gnss positioning with low-cost antennas
IEEE Transactions on Aerospace and Electronic Systems, 53(4), 1597–1613.
Contributors: K. Pesyna*, T. Humphreys *, R. Heath* , T. Novlan* & J. Zhang*
TL;DR:
It is demonstrated that TAR can be significantly reduced through antenna motion, particularly gentle wavelength-scale random antenna motion that acts to decrease the correlation time of the multipath-induced phase errors.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Exploiting Common Sparsity for Frequency-Domain Wideband Channel Estimation at mmWave
2017 IEEE Global Communications Conference, GLOBECOM 2017 - Proceedings, 2018-January, 1–6.
Contributors: J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic *, K. Venugopal * & R. Heath*
TL;DR:
This paper designs a frequency-domain algorithm that leverages the sparsity in the channel to estimate the frequency-selective mmWave channel, and concludes that the proposed approach outperforms previous algorithms, providing a better performance at a lower computational cost.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Estimating millimeter wave channels using out-of-band measurements
2016 Information Theory and Applications Workshop, ITA 2016.
Contributors: A. Ali *, N. González-Prelcic * & R. Heath*
TL;DR:
A transform is provided that can be used to relate the spatial correlation matrix derived at one frequency to another much different frequency, and an expression for the excess mean squared error is derived to evaluate the performance experienced by using the transformed correlation in mmWave channel estimation.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
Experimental evaluation in wireless communications
Eurasip Journal on Wireless Communications and Networking, 2017(1).
Contributors: J. García-Naya *, R. Heath* , F. Kaltenberger *, M. Rupp * & J. Vía*
Source: ORCID
Added: September 11, 2020
2017 journal article
Enhancing Secrecy with Multiantenna Transmission in Millimeter Wave Vehicular Communication Systems
IEEE Transactions on Vehicular Technology, 66(9), 8139–8151.
Contributors: M. Eltayeb*, J. Choi *, T. Al-Naffouri * & R. Heath*
author keywords: Beamforming; millimeter wave (mmWave); privacy; vehicular communication
TL;DR:
Two physical layer (PHY) security techniques for vehicular mmWave communication systems are proposed that provide higher secrecy rate when compared to traditional PHY security techniques that require digital or more complex antenna architectures.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Energy Efficiency of Wireless Information and Power Transfer with Massive MIMO
IEEE Vehicular Technology Conference, 2017-June.
TL;DR:
The overall energy efficiency of a wirelessly powered massive MIMO system is investigated where a multi-antenna base-station uses wireless energy transfer to charge single- antenna 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
2017 journal article
Enclosed mmWave Wearable Networks: Feasibility and Performance
IEEE Transactions on Wireless Communications, 16(4), 2300–2313.
Contributors: G. George *, K. Venugopal *, A. Lozano * & R. Heath*
author keywords: Wearable networks; indoor mmWave communication; stochastic geometry; random shape theory; directional beamforming
TL;DR:
This paper investigates the feasibility of mmWave frequencies for personal networks of wireless wearable devices in enclosed settings and assess the interplay of surface reflections and blockages for dense deployments of wearable networks equipped with directional antenna arrays in relevant indoor settings.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 journal article
Energy-efficient massive MIMO
IEEE Microwave Magazine, 18(5), 18–30.
TL;DR:
Deployment of connectivity solutions in rural communities, however, faces many practical challenges, and wireless connectivity solutions for such applications must focus on low-power hardware operations and high energy efficiency (EE).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Dynamic bit selection in mixed-ADC cloud-RAN systems
IEEE International Conference on Communications.
TL;DR:
In a C-RAN with limited fronthaul capacity, the proposed mixed-ADC makes more efficient use of the fronstaul capacity and assigning a high resolution ADC to a strong channel is beneficial.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
Dynamic Subarrays for Hybrid Precoding in Wideband mmWave MIMO Systems
IEEE Transactions on Wireless Communications, 16(5), 2907–2920.
Contributors: S. Park *, A. Alkhateeb * & R. Heath*
author keywords: Hybrid precoding; millimeter wave systems; MIMO; wideband; subarrays
TL;DR:
A closed-form solution for fully connected OFDM-based hybrid analog/digital precoding is developed for frequency selective mmWave systems and the results indicate that the developed dynamic subarray solution outperforms the fixed hybrid subarray structures in various system and channel conditions.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Cost-effective vehicular radar through minimally-modified IEEE 802.11 devices
2017 IEEE Radar Conference, RadarConf 2017, 0675–0680.
Contributors: R. Daniels*, E. Yeh* & R. Heath
TL;DR:
Simulations show that the proposed solution can deliver acceptable vehicular radar performance with the 10–20 MHz of spectrum provided by IEEE 802.11, demonstrating the feasibility of substantial cost reduction in vehicular Radar.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Dynamic subarray architecture for wideband hybrid precoding in millimeter wave massive MIMO systems
2016 IEEE Global Conference on Signal and Information Processing, GlobalSIP 2016 - Proceedings, 600–604.
Contributors: S. Park *, A. Alkhateeb * & R. Heath*
TL;DR:
A closed-form solution for OFDM-based wideband hybrid precoding is developed for both fully-connected and subarray architectures in frequency selective channels and a novel technique is proposed that dynamically constructs the hybrid subarrays based on the long-term channel characteristics.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Delay and Doppler processing for multi-target detection with IEEE 802.11 OFDM signaling
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3414–3418.
Contributors: D. Nguyen * & R. Heath*
TL;DR:
The feasibility of extending IEEE 802.11p short-range communication in vehicles to automotive radio detection and ranging (radar) functionality is studied and the estimation of signal parameters via rotational invariance technique (ESPRIT) for concurrent multi-target detection and range/velocity estimation is applied.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Channel estimation in mixed hybrid-low resolution MIMO architectures for mmWave communication
Conference Record - Asilomar Conference on Signals, Systems and Computers, 768–773.
Contributors: J. Rodriguez-Fernandez*, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
This paper proposes a compressive channel estimator that exploits the sparse structure of the millimeter wave channel to compensate for the loss of information inherent to the proposed architecture.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
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