Nuria Gonzalez Prelcic
Also known as: González-Prelcic, Nuria
Dr. González Prelcic received her Ph.D. in Electrical Engineering in 2000 from the University of Vigo, Spain. She joined the faculty at the University of California San Diego as a Full Professor in 2023. She was previously an Associate Professor in the ECE Department at NC State, USA, (2020-2023) and in the Signal Theory and Communications Department at the University of Vigo, Spain, (2000-2018). She was a visiting Professor/Senior Research Scientist at the University of Texas at Austin (2018-2020). She was also the founding director of the Atlantic Research Center for Information and Communication Technologies (atlanTTic) at the University of Vigo (2008-2017). She is an Editor for IEEE Transactions on Wireless Communications. She is an elected member of the IEEE SP Society Integrated Sensing and Communication Technical Working Group, IEEE Sensor Array and Multichannel Technical Committee and the IEEE Signal Processing for Communications and Networking Committee. Her main research interests include signal processing and machine learning for wireless communications, with a focus on MIMO processing for mmWave communication, joint localization and communication, joint sensing and communication, sensor-aided communication, signal processing under hardware impairments, vehicular communication, and multiantenna technology for LEO satellite communication. She has published more than 150 papers in these areas, including a highly cited tutorial on signal processing for mmWave MIMO published in the IEEE Journal of Selected Topics in Signal Processing which has received the 2020 IEEE SPS Donald G. Fink Overview Paper Award, and a paper pioneering the idea of enabling automotive radar with a WiFi waveform that won the 2022 IEEE Vehicular Technology Society Best Vehicular Electronics Paper Award. She is the lead editor in the forthcoming special issue on integrated sensing and communication featured by the IEEE Signal Processing Magazine.
Works (109)
Updated: July 5th, 2023 14:40
2023 journal article
A Novel Approach for Unit-Modulus Least-Squares Optimization Problems
IEEE SIGNAL PROCESSING LETTERS, 30, 224–228.
author keywords: Optimization; Iterative methods; Millimeter wave communication; Linear programming; Signal processing algorithms; Radio frequency; Precoding; Manifold optimization; unit modulus; constant magnitude; hybrid precoding and combining
TL;DR:
A novel constrained least-squares optimization problem is described and an iterative solution that deals with the constraints of placing variables on the complex unit circle is proposed that achieves efficient closed-form local updates based on Procrustes orthogonal solutions that monotonically improve the objective function.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: ORCID, Web Of Science
Added: March 9, 2023
2023 journal article
Deep Learning-Based Link Configuration for Radar-Aided Multiuser mmWave Vehicle-to-Infrastructure Communication
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 72(6), 7454–7468.
author keywords: Index Terms-Radar-aided mmWave communication; vechicle-to-infrastructure (V2I); mmWave MIMO; automotive radar; deep learning-based link configuration; out-of-band information; beyond 5G; 6G
TL;DR:
Results show that the proposed processing chain can reliably isolate the spatial covariances for individual radars, and the radar-to-communications translation strategy based on deep learning provides a significant improvement over pure radar-aided methods in both LOS and NLOS channels.
(via Semantic Scholar)
open access via arxiv.org (repository)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Sources: ORCID, Web Of Science
Added: January 24, 2023
2023 journal article
Hybrid mmWave MIMO Systems Under Hardware Impairments and Beam Squint: Channel Model and Dictionary Learning-Aided Configuration
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 22(10), 6898–6913.
author keywords: Dictionary learning; millimeter wave (mmWave); massive MIMO; beam squint; spatial wideband effect; hardware impairments; mutual coupling; antenna spacing error; channel estimation; sparse coding; dictionary update
TL;DR:
A dictionary learning (DL) algorithm is proposed to obtain the sparsifying dictionaries embedding hardware impairments, by considering the effect of beam squint without introducing it into the learning process.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education
(OpenAlex)
Sources: ORCID, Web Of Science
Added: March 1, 2023
2022 article
Beam Codebook Design for Joint Initial Access and Localization in mmWave Networks
2022 56TH ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS, AND COMPUTERS, pp. 919–924.
author keywords: mmWave; beam codebook design; compressed channel estimation; mutual coherence; localization
TL;DR:
This paper addresses the problem of designing the set of training precoders and combiners that, while providing a high accuracy channel and position estimate, also result in a reduced training overhead with respect to standardized beam training strategies and considers the mutual coherence between the training hybrid precoder/combiners and the overcomplete dictionary used to represent the channel.
(via Semantic Scholar)
Sources: Web Of Science, NC State University Libraries
Added: June 5, 2023
2022 journal article
Beamformer Design and Optimization for Joint Communication and Full-Duplex Sensing at mm-Waves
IEEE TRANSACTIONS ON COMMUNICATIONS, 70(12), 8298–8312.
author keywords: Sensors; Array signal processing; Radar; Radio frequency; Optimization; Antenna arrays; Reflection; Beamforming; full-duplex; joint communication and sensing; mm-wave; monostatic radar; self-interference
TL;DR:
This article proposes new transmitter and receiver beamforming solutions for purely analog beamforming based JCAS systems that maximize the beamforming gain at the sensing direction while controlling the beamformed power at the communications direction(s), cancelling the SI and eliminating the potential reflection from the communication direction and optimizing the combined radar pattern (CRP).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(Web of Science)
Sources: ORCID, Web Of Science
Added: November 4, 2022
2022 journal article
Hybrid Beamforming Designs for Frequency-Selective mmWave MIMO Systems With Per-RF Chain or Per-Antenna Power Constraints
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 21(8), 5770–5784.
author keywords: Radio frequency; OFDM; Hybrid power systems; MIMO communication; Antennas; Wireless communication; Computer architecture; Frequency-selective channel; hybrid analog; digital precoding; millimeter wave communications; per-antenna power constraints
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: ORCID, Web Of Science
Added: August 13, 2022
2021 journal article
Deep Transfer Learning for Site-Specific Channel Estimation in Low-Resolution mmWave MIMO
IEEE WIRELESS COMMUNICATIONS LETTERS, 10(7), 1424–1428.
author keywords: Deep learning; deep transfer learning; channel estimation; mmWave; quantized MIMO
TL;DR:
The problem of channel estimation in low-resolution multiple-input multiple-output MIMO systems operating at millimeter wave (mmWave) is considered and a deep transfer learning (DTL) approach is presented that exploits previously trained models to speed up site adaptation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: July 26, 2021
2021 journal article
Site-Specific Online Compressive Beam Codebook Learning in mmWave Vehicular Communication
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 20(5), 3122–3136.
author keywords: Training; Channel estimation; Antenna arrays; Wireless communication; Ray tracing; Millimeter wave communication; Standards; Vehicular communication; compressed sensing (CS); beamforming; mm-Wave
TL;DR:
A novel framework that learns the channel angle-of-departure (AoD) statistics at a base station (BS) and uses this information to efficiently acquire channel measurements and the upper confidence bound (UCB) algorithm to learn the AoD statistics and the CS matrix.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: ORCID, Web Of Science
Added: May 10, 2021
2020 conference paper
5G V2X communication at millimeter wave: Rate maps and use cases
IEEE Vehicular Technology Conference, 2020-May.
Contributors: W. Zheng *, A. Ali *, N. Gonzalez-Prelcic *, R. Heath *, A. Klautau * & E. Pari*
TL;DR:
This paper introduces a methodology for evaluating rates in 5G mmWave V2X scenarios and leverages available city CAD models, realistic traffic simulators, and industry standard ray tracing tools to allow site-specific propagation evaluation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities
(OpenAlex)
Source: ORCID
Added: October 8, 2020
2020 journal article
Bayesian Predictive Beamforming for Vehicular Networks: A Low-Overhead Joint Radar-Communication Approach
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 20(3), 1442–1456.
author keywords: Radar tracking; Tracking; Array signal processing; Estimation; OFDM; Message passing; Dual-functional radar-communication; beam tracking; factor graph; vehicular networks
TL;DR:
Simulation results show that the proposed DFRC based beamforming scheme is superior to the feedback-based approach in terms of both estimation and communication performance, and the proposed message passing algorithm achieves a similar performance of the high-complexity particle filtering-based methods.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: March 10, 2021
2020 conference paper
Deep Learning-Based Beam Alignment in Mmwave Vehicular Networks
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2020-May, 8569–8573.
Contributors: N. Myers *, Y. Wang *, N. Gonzalez-Prelcic * & R. Heath *
TL;DR:
Simulation results for vehicular communication channels indicate that the end-to-end deep learning-based approach achieves better beam alignment than standard CS techniques that use the random phase shift-based design.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2020 journal article
Dictionary Learning for Channel Estimation in Hybrid Frequency-Selective mmWave MIMO Systems
IEEE Transactions on Wireless Communications, 19(11), 7407–7422.
author keywords: Dictionaries; Channel estimation; Antenna arrays; MIMO communication; Hardware; Calibration; Channel models; Dictionary learning; compressive sensing; mmWave MIMO; channel estimation; manufacturing errors; array calibration; array manifold disturbance; antenna gain; phase error; mutual coupling; hybrid architecture; ADMM; sparse coding
TL;DR:
Two dictionary learning (DL) algorithms to learn the best sparsifying dictionaries for channel matrices from observations obtained with practical hybrid frequency-selective mmWave multiple-input-multiple-output (MIMO) systems are proposed.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education
(OpenAlex)
9. Industry, Innovation and Infrastructure
(Web of Science)
Source: ORCID
Added: November 15, 2020
2020 journal article
Leveraging Sensing at the Infrastructure for mmWave Communication
IEEE COMMUNICATIONS MAGAZINE, 58(7), 84–89.
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: ORCID, Web Of Science, NC State University Libraries
Added: August 24, 2020
2020 journal article
Passive Radar at the Roadside Unit to Configure Millimeter Wave Vehicle-to-Infrastructure Links
IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY, 69(12), 14903–14917.
author keywords: Passive radar; Antenna arrays; Radar antennas; Measurement; Receivers; Wireless communication; Out-of-band information; millimeter wave communications; FMCW radar; radar-aided communication; beyond 5G
TL;DR:
The results show that covariance correction improves the similarity of radar and communication APS, and the radar-assisted strategy significantly reduces the training overhead, being particularly useful in non-line-of-sight scenarios.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science; OpenAlex)
Sources: ORCID, Web Of Science
Added: January 23, 2021
2020 journal article
Wideband Channel Tracking and Hybrid Precoding for mmWave MIMO Systems
IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS, 20(4), 2161–2174.
author keywords: Channel estimation; MIMO communication; Antenna arrays; Narrowband; Wireless communication; 5G mobile communication; Correlation; Antenna arrays; beam training; channel estimation; channel tracking; millimeter wave; MIMO
TL;DR:
A hybrid precoder and combiner design method is proposed to increase the received signal-to-noise ratio (SNR) during channel tracking, such that near-optimum data rates can be obtained with low-overhead.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(Web of Science)
Sources: ORCID, Web Of Science, NC State University Libraries
Added: April 10, 2021
2019 conference paper
Analog beamforming for full-duplex millimeter wave communication
Proceedings of the International Symposium on Wireless Communication Systems, 2019-August, 687–691.
Contributors: R. Lopez-Valcarce * & N. Gonzalez-Prelcic *
TL;DR:
A new algorithm is developed for the design of constant-amplitude analog precoders and combiners of an FD mmWave single-stream bidirectional link, significantly reducing the aforementioned performance loss.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Automotive radar radiations as signals of opportunity for millimeter wave V2I links
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 554–558.
Contributors: A. Ali *, N. Gonzalez-Prelcic * & A. Ghosh
TL;DR:
This work proposes to use a passive radar receiver at the roadside unit to reduce the training overhead of establishing an mmWave communication link and presents simulation results based on ray-tracing data.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Beamformer design for full-duplex amplify-and-forward millimeter wave relays
Proceedings of the International Symposium on Wireless Communication Systems, 2019-August, 86–90.
Contributors: R. Lopez-Valcarce * & N. Gonzalez-Prelcic *
TL;DR:
An all-digital beamformer design is developed by imposing a zero-forcing constraint on SI, performing quasi-optimally in terms of spectral efficiency, and modified to fit the hardware-related constraints usually found when operating at mmWave, so that the beamformers can be implemented in the analog domain by using phase shifters, with an acceptable performance loss.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
16. Peace, Justice and Strong Institutions
(OpenAlex)
Source: ORCID
Added: October 8, 2020
2019 journal article
Channel Estimation for Hybrid mmWave MIMO Systems With CFO Uncertainties
IEEE Transactions on Wireless Communications, 18(10), 4636–4652.
Contributors: J. Rodriguez-Fernandez * & N. Gonzalez-Prelcic *
author keywords: Millimeter wave MIMO; hybrid architecture; channel estimation; carrier frequency offset; synchronization
TL;DR:
This paper proposes a multi-stage algorithm for joint CFO and channel estimation using a training protocol between a transmitter and a receiver, and shows 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: October 8, 2020
2019 conference paper
Frequency-selective Hybrid Precoding and Combining for Mmwave Mimo Systems with Per-antenna Power Constraints
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2019-May, 4794–4798.
Contributors: J. Rodríguez-Fernández *, R. López-Valcarce * & N. González-Prelcic *
TL;DR:
Numerical results demonstrate the effectiveness of the proposed design method, whose performance is close to that of the all-digital solution, and aims at minimizing the Euclidean distance with respect to the approximate all- digital precoders and combiners maximizing the spectral efficiency under per-antenna power constraints.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Hybrid precoding and combining for full-duplex millimeter wave communication
2019 IEEE Global Communications Conference, GLOBECOM 2019 - Proceedings.
Contributors: J. Palacios *, J. Rodriguez-Fernandez * & N. Gonzalez-Prelcic *
TL;DR:
This paper addresses a major challenge for FD mmWave systems: the design of hybrid precoders and combiners that simultaneously maximize the sum spectral efficiency and cancel the SI in the analog domain, to keep control of the signal level at the input of the analog- to-digital converters (ADCs).
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Joint Position, Orientation and Channel Estimation in Hybrid mmWAVE MIMO Systems
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 1453–1458.
Contributors: W. Zheng * & N. Gonzalez-Prelcic *
TL;DR:
A time domain algorithm is developed that provides an estimation of the channel and the user position and orientation and outperforms previous work when operating with hybrid architectures and realistic channel realizations.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2019 journal article
LIDAR Data for Deep Learning-Based mmWave Beam-Selection
IEEE Wireless Communications Letters, 8(3), 909–912.
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 conference paper
Managing Hardware Impairments in Hybrid Millimeter Wave Mimo Systems: A Dictionary Learning-Based Approach
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 168–172.
Contributors: J. Palacios *, N. Gonzalez-Prelcic * & J. Widmer *
TL;DR:
Numerical simulations with different system configurations and parameters of the hardware impairments, show the effectiveness of the proposed dictionary learning algorithm for channel estimation at millimeter wave frequencies with hybrid MIMO architectures.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Measuring radar and communication congruence at millimeter wave frequencies
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2019-November, 925–929.
Contributors: A. Graff *, A. Ali * & N. Gonzalez-Prelcic *
TL;DR:
This paper conducts a measurement based study of vehicle positioning accuracy using roadside unit (RSU) mounted mmWave radar and GPS, and compares the performance of radar-assisted and GPS-assisted beam-selection.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Millimeter wave V2I beam-training using base-station mounted radar
2019 IEEE Radar Conference, RadarConf 2019.
Contributors: A. Ali *, N. Gonzalez-Prelcic * & A. Ghosh
TL;DR:
This work uses location of the vehicle to reduce the beam-training overhead of line-of-sight V2I links and establishes that an off-the-shelf radar has better localization than global navigation satellite system (GNSS).
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: October 8, 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 conference paper
Position and LIDAR-Aided mmWave Beam Selection using Deep Learning
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2019-July.
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
Position-Aided Compressive Channel Estimation and Tracking for Millimeter Wave Multi-User MIMO Air-to-Ground Communications
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2019-July.
Contributors: J. Rodriguez-Fernandez *, N. Gonzalez-Prelcic *, I. Pamplona-Trindade* & A. Klautau *
TL;DR:
Simulation results show that, even under small Rician factors of the A2G channel, obtained from ray-tracing, the proposed algorithm is able to keep track of the multi-user channel and maintain near-optimal data rates, thereby making it a suitable candidate for upcoming cellular-supported mmWave A 2G deployments.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2019 conference paper
Position-Aided Compressive Channel Tracking for Wideband Millimeter Wave Multi-User Communication
IEEE International Conference on Communications, 2019-May.
Contributors: J. Rodriguez-Fernandez *, N. Gonzalez-Prelcic * & T. Shimizu
TL;DR:
A new strategy to track the channel variations in a multi-user (MU) hybrid mmWave MIMO communication cellular network using the sparse nature of the mmWave channel is proposed, which leverages statistical knowledge of the channel parameters, which enables further overhead reductions.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 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
Contributors: P. Xia, R. Heath & N. Prelcic
Source: ORCID
Added: October 8, 2020
2019 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
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.
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
2018 conference paper
5G MIMO data for machine learning: Application to beam-selection using deep learning
2018 Information Theory and Applications Workshop, ITA 2018.
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 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 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
Channel Estimation and Hybrid Precoding for Frequency Selective Multiuser mmWave MIMO Systems
IEEE Journal of Selected Topics in Signal Processing, 12(2), 353–367.
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 conference paper
Channel Estimation for Frequency-Selective mmWave MIMO Systems with Beam-Squint
2018 IEEE Global Communications Conference, GLOBECOM 2018 - Proceedings.
Contributors: J. Rodríguez-Fernández * & N. González-Prelcic *
TL;DR:
This paper proposes an algorithm that approximates the optimal solution to the dictionary-constrained Maximum-Likelihood (ML) estimator for frequency-selective mmWave channels considering frequency-dependent array responses and develops a suboptimal channel estimation strategy to consider the beam squint effect.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 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 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.
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
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.
Contributors: R. Heath* & N. Gonzalez-Prelcic
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.
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
Joint Synchronization and Compressive Estimation for Frequency-Selective mmWave MIMO Systems
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2018-October, 1280–1286.
Contributors: J. Rodriguez-Fernandez * & N. Gonzalez-Prelcic *
TL;DR:
Simulation results show that, using as few training symbols as in the 5G New Radio communications standard, near-optimum data rates can be achieved even at the very low SNR regime, thereby emphasizing the suitability of compressive channel estimation even when synchronization has not been performed at the receiver side.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2018 conference paper
Low Complexity Transform Coding for Millimeter Wave MIMO CSI Compression
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2018-October, 1582–1586.
Contributors: B. Boas *, N. Fonseca*, A. Klautau * & N. Gonzalez-Prelcic *
TL;DR:
The proposed method, which exhibits low complexity, is based on transform coding and uses a customized significance map to encode the relevant coefficients without using a fixed ordering scheme, such as the zig-zag scanning used in image coding.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 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
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
2017 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
2017 conference paper
A frequency-domain approach to wideband channel estimation in millimeter wave systems
IEEE International Conference on Communications.
Contributors: J. Rodriguez-Fernandez *, K. Venugopal *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
A sparse approach for frequency selective channel estimation for mmWave channels, assuming a hybrid architecture, and shows that the estimation error is small and the computational complexity is kept low.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 conference paper
Channel Estimation and Hybrid Precoding/Combining for Frequency Selective Multiuser mmWave Systems
2017 IEEE Global Communications Conference, GLOBECOM 2017 - Proceedings, 2018-January, 1–6.
Contributors: J. Gonzalez-Coma *, J. Rodriguez-Fernandez *, N. Gonzalez-Prelcic * & L. Castedo *
TL;DR:
This work proposes two methods to design the hybrid analog-digital filters when only an estimate of the channel is available at both the base station (BS) and the users, both based on an alternating minimization (AM) iterative strategy.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2017 journal article
Channel Estimation for Hybrid Architecture-Based Wideband Millimeter Wave Systems
IEEE Journal on Selected Areas in Communications, 35(9), 1996–2009.
Contributors: K. Venugopal *, A. Alkhateeb *, * & R. Heath*
author keywords: Millimeter wave communications; channel estimation; frequency-selective channel; hybrid precoder-combiner; compressed sensing; sparse recovery; multi-stream; MIMO; IEEE 802.11ad
TL;DR:
This paper develops a sparse formulation and compressed sensing-based solutions for the wideband mmWave channel estimation problem for hybrid architectures and proposes explicit channel estimation techniques for purely time or frequency domains and for combined time/frequency domains.
(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 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
2017 journal article
Millimeter Wave Beam-Selection Using Out-of-Band Spatial Information
IEEE Transactions on Wireless Communications, 17(2), 1038–1052.
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
2017 journal article
Millimeter-Wave Communication with Out-of-Band Information
IEEE Communications Magazine, 55(12), 140–146.
Contributors: N. González-Prelcic *, A. Ali *, V. Va * & R. Heath*
TL;DR:
This article analyze different strategies to leverage information derived from sensors or from other communication systems operating at sub-6 GHz bands to help configure the mmWave communication link and describes the overhead reductions that can be obtained when exploiting out-of-band information.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2017 journal article
Optimality of Frequency Flat Precoding in Frequency Selective Millimeter Wave Channels
IEEE Wireless Communications Letters, 6(3), 330–333.
Contributors: K. Venugopal *, N. Gonzalez-Prelcic * & R. Heath*
author keywords: Millimeter wave communications; hybrid architecture; subspace estimation
TL;DR:
It is shown that under some assumptions, the dominant subspaces of the frequency domain channel matrices are equivalent, which means that semi-unitary frequency flat precoding and combining are sufficient to achieve the maximum spectral efficiency when there is not too much scattering in the channel.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2017 article
Security in automotive radar and vehicular networks
Microwave Journal, Vol. 60, pp. 148–164. http://www.scopus.com/inward/record.url?eid=2-s2.0-85021274268&partnerID=MN8TOARS
Contributors: E. Yeh, C. Bhat, R. Heath, J. Choi & N. Prelcic
Source: ORCID
Added: October 8, 2020
2017 conference paper
Time-domain channel estimation for wideband millimeter wave systems with hybrid architecture
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 6493–6497.
Contributors: K. Venugopal *, A. Alkhateeb *, R. Heath* & N. Prelcic *
TL;DR:
A sparse recovery based time-domain channel estimation technique for hybrid architecture based frequency selective mmWave systems and the proposed compressed sensing channel estimation algorithm is shown to provide good estimation error performance, while requiring small training overhead.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 journal article
An Overview of Signal Processing Techniques for Millimeter Wave MIMO Systems
IEEE Journal on Selected Topics in Signal Processing, 10(3), 436–453.
Contributors: R. Heath* , N. Gonzalez-Prelcic *, S. Rangan *, W. Roh* & A. Sayeed *
TL;DR:
This article provides an overview of signal processing challenges in mmWave wireless systems, with an emphasis on those faced by using MIMO communication at higher carrier frequencies.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2016 conference paper
Array thinning for antenna selection in millimeter wave MIMO systems
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2016-May, 3416–3420.
Contributors: C. Rusu *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
A new optimization solution based on compressed sensing techniques and convex optimization relaxation which is shown to be a heuristic that solves the original binary optimization problem of side lobe level minimization in millimeter wave MIMO systems is proposed.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2016 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
2016 conference paper
Compressive channel estimation in FDD multi-cell massive MIMO systems with arbitrary arrays
2016 IEEE Globecom Workshops, GC Wkshps 2016 - Proceedings.
Contributors: N. Gonzalez-Prelcic *, K. Truongt, C. Rusu * & R. Heath*
TL;DR:
This paper proposes a general approach for downlink channel estimation in FDD massive MIMO systems which leverages the individual sparsity in the different downlink channels without any other additional assumption.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2016 journal article
Designing Incoherent Frames Through Convex Techniques for Optimized Compressed Sensing
IEEE Transactions on Signal Processing, 64(9), 2334–2344.
Contributors: C. Rusu * & N. González-Prelcic *
author keywords: Grassmannian frames; equiangular tight frames; incoherent frames; overcomplete dictionaries; compressed sensing
TL;DR:
This paper gives a detailed analysis of the optimization problem at the heart of this approach and proposes a new method that substantially outperforms the initial approach and all current methods in the literature for all types of frames, with low and high redundancy.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2016 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
2016 journal article
Fast Orthonormal Sparsifying Transforms Based on Householder Reflectors
IEEE Transactions on Signal Processing, 64(24), 6589–6599.
Contributors: C. Rusu *, N. Gonzalez-Prelcic * & R. Heath*
author keywords: Sparsifying transforms; fast transforms; dictionary learning; compressed sensing
TL;DR:
A framework for learning orthonormal dictionaries, which are built from products of a few Householder reflectors, and two algorithms are proposed to learn the reflector coefficients, which have low computational complexity and are shown to converge to local minimum points.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
4. Quality Education
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 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
2016 journal article
Hybrid MIMO Architectures for Millimeter Wave Communications: Phase Shifters or Switches?
IEEE Access, 4, 247–267.
Contributors: R. Mendez-Rial *, C. Rusu *, N. Gonzalez-Prelcic *, A. Alkhateeb * & R. Heath*
author keywords: Millimeter wave; hybrid architecture; switches; channel estimation; precoding
TL;DR:
Numerical results show that architectures based on switches obtain equal or better channel estimation performance to that obtained using phase shifters, while reducing hardware complexity and power consumption, and all the hybrid architectures provide similar spectral efficiencies.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 conference paper
Hybrid precoders and combiners for mmwave MIMO systems with per-antenna power constraints
2016 IEEE Global Communications Conference, GLOBECOM 2016 - Proceedings.
Contributors: R. Lopez-Valcarce *, N. Gonzalez-Prelcic *, C. Rusu * & R. Heath*
TL;DR:
A new method is developed for the design of the hybrid precoder and combiner which attempts to match such all- digital approximation, and results show the effectiveness of the proposed approach, which performs close to the all-digital solution.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 journal article
Introduction to the Special Issue on Signal Processing for Millimeter Wave Wireless Communications
IEEE Journal on Selected Topics in Signal Processing, 10(3), 433–435.
Contributors: R. Heath* , N. Gonzalez-Prelcic *, S. Rangan *, W. Roh* & A. Sayeed *
TL;DR:
The eleven papers in this special section focus signal processing for millimeter wave (mmWave) wireless communications, which is defining a new era of wireless communication by offering much higher bandwidth communication channels than presently used in commercial wireless systems.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 journal article
Low Complexity Hybrid Precoding Strategies for Millimeter Wave Communication Systems
IEEE Transactions on Wireless Communications, 15(12), 8380–8393.
Contributors: C. Rusu *, R. Mendez-Rial *, N. Gonzalez-Prelcic * & R. Heath*
author keywords: Millimeter wave communication; antenna arrays; precoding
TL;DR:
This paper introduces and analyzes several algorithms that efficiently design hybrid precoders and combiners starting from the known optimum digital precoder/combiner, which can be computed when perfect channel state information is available.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2016 journal article
Millimeter-Wave Vehicular Communication to Support Massive Automotive Sensing
IEEE Communications Magazine, 54(12), 160–167.
Contributors: J. Choi *, V. Va *, N. González-Prelcic *, R. Daniels, C. Bhat * & R. Heath*
TL;DR:
The case is made that mmWave communication is the only viable approach for high bandwidth connected vehicles and the overhead of mmWave beam training is proposed, showing that the beam alignment overhead can be reduced by using position information obtained from DSRC.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 journal article
Properties of real and complex ETFs and their application to the design of low coherence frames
Linear Algebra and Its Applications, 508, 81–90.
Contributors: C. Rusu *, N. González-Prelcic * & R. Heath*
author keywords: Equiangular tight frames; Mutual coherence; Average coherence
TL;DR:
New properties for Gram matrices of equiangular tight frames are conveyed and they are used to construct new frames with low average and worst case coherences.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2016 conference paper
Radar aided beam alignment in MmWave V2I communications supporting antenna diversity
2016 Information Theory and Applications Workshop, ITA 2016.
Contributors: N. González-Prelcic *, R. Méndez-Rial * & R. Heath*
TL;DR:
This paper proposes a set of algorithms to perform the beam alignment task in a vehicle-to-infrastructure (V2I) scenario, from extracting information from the radar signal to configuring the beams that illuminate the different antennas in the vehicle.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
9. Industry, Innovation and Infrastructure
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 journal article
Robust Analog Precoding Designs for Millimeter Wave MIMO Transceivers with Frequency and Time Division Duplexing
IEEE Transactions on Communications, 64(11), 4622–4634.
Contributors: P. Xia *, R. Heath* & N. Gonzalez-Prelcic *
author keywords: Millimeter Wave Communications; MIMO; Precoding; Beam Steering; Iterative Algorithms; Numerical Analysis
TL;DR:
This paper exploits the power iteration principle and proposes a robust analog precoding training algorithm that can be applied in both frequency division duplex transmission systems and time division dupLex transmission systems with or without RF calibration.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2016 conference paper
The use of unit norm tight measurement matrices for one-bit compressed sensing
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2016-May, 4044–4048.
Contributors: C. Rusu *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
From the analytical and experimental results, it is concluded that when implementing one-bit compressed sensing schemes with fixed measurement matrices unit norm tight frames are the measurements of choice.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Adaptive hybrid precoding and combining in MmWave multiuser MIMO systems based on compressed covariance estimation
2015 IEEE 6th International Workshop on Computational Advances in Multi-Sensor Adaptive Processing, CAMSAP 2015, 213–216.
Contributors: R. Méndez-Rial *, N. González-Prelcic * & R. Heath*
TL;DR:
An adaptive multi user (MU) single-cell hybrid precoding strategy that iteratively designs the precoders/combiners exploiting the reciprocity of time division duplex (TDD) millimeter wave systems is proposed.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
An attack on antenna subset modulation for millimeter wave communication
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2015-August, 2914–2918.
Contributors: C. Rusu *, N. González-Prelcic * & R. Heath*
TL;DR:
This paper shows that ASM is not robust to an eavesdropper that makes multiple simultaneous measurements at multiple angles, and simulations show the performance of the estimation algorithms and how the eavesdroppers can effectively recover the information if the signal-to-noise ratio exceeds a certain threshold.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Augmented covariance estimation with a cyclic approach in DOA
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2015-August, 2784–2788.
Contributors: R. Mendez-Rial *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
The new method exploits the periodicity of the covariance lags when the DOAs are assumed on a discrete grid with a certain resolution and achieves twice the resolution of typical methods such as the direct augmentable approach or forward backward spatial smoothing.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Channel estimation and hybrid combining for mmWave: Phase shifters or switches?
2015 Information Theory and Applications Workshop, ITA 2015 - Conference Proceedings, 90–97.
Contributors: R. Mendez-Rial *, C. Rusu *, A. Alkhateeb *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
A different hybrid architecture is proposed, which simplifies the hardware at the receiver by replacing the phase shifters with switches and a new approach for compressed sensing based channel estimation for the hybrid architectures is presented.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Dictionary-free hybrid precoders and combiners for mmWave MIMO systems
IEEE Workshop on Signal Processing Advances in Wireless Communications, SPAWC, 2015-August, 151–155.
Contributors: R. Mendez-Rial *, C. Rusu *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
A low complexity hybrid precoding design for the architecture based on phase shifters is proposed, a greedy algorithm based on the orthogonal matching pursuit algorithm but replacing the costly correlation operations over a dictionary with the element-wise normalization of the first singular vector of the residual.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Investigating the IEEE 802.11ad standard for millimeter wave automotive radar
2015 IEEE 82nd Vehicular Technology Conference, VTC Fall 2015 - Proceedings.
Contributors: P. Kumari *, N. González-Prelcic * & R. Heath*
TL;DR:
This paper develops a joint framework of long range automotive radar (LRR) and vehicle-to-vehicle communication (V2V) at 60 GHz by exploiting the special data-aided structure (repeated Golay complimentary sequences) of an IEEE 802.11ad single carrier physical layer (SCPHY) frame.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2015 conference paper
Low resolution adaptive compressed sensing for mmWave MIMO receivers
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2016-February, 1138–1143.
Contributors: C. Rusu *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
An adaptive compressed sensing strategy to recover the sparse mmWave channel is designed and the simulation results show that the new adaptive strategy outperforms conventional compressed sensing schemes based on fixed measurement matrices, while requiring a lower number of training pilots.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2014 conference paper
5G in space: PHY-Layer design for satellite communications using non-orthogonal multi-carrier transmission
2014 7th Advanced Satellite Multimedia Systems Conference and the 13th Signal Processing for Space Communications Workshop, ASMS/SPSC 2014, 2014-January, 190–196.
Contributors: J. Dommel *, G. Boccolini*, L. Raschkowski *, S. Jaeckel*, L. Thiele, T. Haustein *, N. Prelcic *
TL;DR:
The properties of Filter Bank Multicarrier (FBMC) as potential MC transmission scheme is discussed taking into account the requirements for the satellite-specific PHY-Layer like non-linear distortions due to High Power Amplifiers.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2014 conference paper
Adaptive one-bit compressive sensing with application to low-precision receivers at mmWave
2015 IEEE Global Communications Conference, GLOBECOM 2015.
Contributors: C. Rusu *, R. Mendez-Rial *, N. Gonzalez-Prelcic * & R. Heath*
TL;DR:
An adaptive one-bit compressed sensing scheme is developed that can be used at low-resolution mmWave receivers for channel estimation and outperforms the fixed one in the context of mmWave channel estimation.
(via Semantic Scholar)
UN Sustainable Development Goal Categories
7. Affordable and Clean Energy
(OpenAlex)
Source: ORCID
Added: September 11, 2020
2014 conference paper
Channel estimation in millimeter wave MIMO systems with one-bit quantization
Conference Record - Asilomar Conference on Signals, Systems and Computers, 2015-April, 957–961.
Contributors: J. Mo *, P. Schniter *, N. Prelcic * & R. Heath*
TL;DR:
A modified EM algorithm is proposed that exploits sparsity and has better performance than the conventional EM algorithm and is presented as a solution to the channel estimation problem for millimeter wave MIMO systems with one-bit analog-to-digital converters.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2014 conference paper
Circular sparse rulers based on co-prime sampling for compressive power spectrum estimation
2014 IEEE Global Communications Conference, GLOBECOM 2014, 3044–3050.
Contributors: N. González-Prelcic * & M. Domínguez-Jiménez
TL;DR:
This paper solves the design of low rate covariance Samplers by developing a multicoset sampling strategy based on co-prime samplers, achieving higher compression ratios than previous solutions.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2014 journal article
MIMO precoding and combining solutions for millimeter-wave systems
IEEE Communications Magazine, 52(12), 122–131.
Contributors: A. Alkhateeb *, J. Mo *, N. González-Prelcic * & R. Heath Jr
TL;DR:
How beamforming and precoding are different in MIMO mmWave systems than in their lower-frequency counterparts, due to different hardware constraints and channel characteristics are explained.
(via Semantic Scholar)
Source: ORCID
Added: September 11, 2020
2014 conference paper
Power spectrum blind sampling using optimal multicoset sampling patterns in the MSE sense
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 1055–1059.
Contributors: B. Tausiesakul * & N. Gonzalez-Prelcic *
TL;DR:
The design of a multicoset sampling pattern to be used in power spectrum blind sampling (PSBS) is considered and the criterion for the PSBS pattern design is based on the minimization of the mean square error of the power spectrum estimate.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2014 conference paper
Sensitivity of compressive sensing architectures based on time interleaved analog-to-digital converters to channel mismatches
2014 IEEE 12th International New Circuits and Systems Conference, NEWCAS 2014, 45–48.
Contributors: R. Méndez-Rial *, J. Caurel-Carrera* & N. González-Prelcic *
TL;DR:
This paper studies the performance of analog to information converters based on time interleaved analog to digital converters (TI-ADCs) when real components are used as the core of the sampling devices.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2013 conference paper
A class of circular sparse rulers for compressive power spectrum estimation
European Signal Processing Conference. http://www.scopus.com/inward/record.url?eid=2-s2.0-84901365760&partnerID=MN8TOARS
Contributors: M. Dominguez-Jimenez & N. Gonzalez-Prelcic
Source: ORCID
Added: October 8, 2020
2013 conference paper
Power spectrum blind sampling using minimum mean square error and weighted least squares
Conference Record - Asilomar Conference on Signals, Systems and Computers, 153–157.
Contributors: B. Tausiesakul * & N. González-Prelcic *
TL;DR:
It is analytically shown that the optimal weighting matrix is equal to the inverse of the covariance matrix of the correlation estimate of the sub-Nyquist rate samples, which can be optimal in MSE sense for power spectrum estimation.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2012 conference paper
Analysis and design of multirate synchronous sampling schemes for sparse multiband signals
European Signal Processing Conference, 1184–1188. http://www.scopus.com/inward/record.url?eid=2-s2.0-84869776929&partnerID=MN8TOARS
Contributors: M. Domínguez-Jitnénez & N. González-Prelcic
Source: ORCID
Added: October 8, 2020
2012 conference paper
Design of universal multicoset sampling patterns for compressed sensing of multiband sparse signals
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3337–3340.
Contributors: M. Domínguez-Jiménez, N. González-Prelcic *, G. Vazquez-Vilar * & R. López-Valcarce *
TL;DR:
This work analyzes the matrix involved in the corresponding reconstruction equation and defines a new method for the design of universal multicoset codes, that is, codes guaranteeing perfect reconstruction of the sparse multiband signal.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2010 conference paper
Wideband spectral estimation from compressed measurements exploiting spectral a priori information in cognitive radio systems
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2958–2961.
Contributors: G. Vazquez-Vilar *, R. López-Valcarce *, C. Mosquera * & N. González-Prelcic *
author keywords: Spectral estimation; compressive sampling; cognitive radio
TL;DR:
A Bayesian based iterative algorithm is described that discovers the set of active signals conforming the band and simultaneously reconstructs the spectrum and is shown to perform close to a Genie-Aided CRLB that includes full knowledge about the sparsity pattern of the channels.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2004 journal article
Linear boundary extensions for finite length signals and paraunitary two-channel filterbanks
IEEE Transactions on Signal Processing, 52(11), 3213–3226.
Contributors: M. Jiménez & N. Prelcic
author keywords: border effects; boundary extensions; orthogonal transforms; smooth orthogonal extensions; two-channel filterbanks
Source: ORCID
Added: October 8, 2020
2002 conference paper
Design of non-expansionist and orthogonal extension methods for tree-structured filter banks
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 1, 532–535.
TL;DR:
This paper introduces the most general method for designing signal extensions which yield non-expansionist subband transforms and concludes by analyzing some examples of the new boundary filters associated to the proposed extensions.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2002 conference paper
Polynomial extension method for size-limited paraunitary filter banks
European Signal Processing Conference, 2002-March. http://www.scopus.com/inward/record.url?eid=2-s2.0-84960896268&partnerID=MN8TOARS
Contributors: M. Jimenez & N. Prelcic
Source: ORCID
Added: October 8, 2020
2002 conference paper
Smooth orthogonal signal extensions for paraunitary tree-structured filter banks
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 2. http://www.scopus.com/inward/record.url?eid=2-s2.0-0036297198&partnerID=MN8TOARS
Contributors: M. Jiménez & N. Prelcic
Source: ORCID
Added: October 8, 2020
2001 journal article
Adaptive tiling of the time-frequency plane with application to multiresolution-based perceptive audio coding
Signal Processing, 81(2), 301–319.
Contributors: N. Prelcic * & A. Pena *
author keywords: tree structured filter banks; best basis selection; psychoacoustic model; perceptual audio coding
TL;DR:
A complete adaptive analysis system suitable for the compression of audio signals is presented and it is found that, for the application of audio compression, the perceptually driven basis selection algorithm leads to a much higher compression efficiency and better quality of the reconstructed signal.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2001 conference paper
Orthogonal extensions of AR processes without artificial discontinuities for size-limited filter banks
IEEE Workshop on Statistical Signal Processing Proceedings, 579–582. http://www.scopus.com/inward/record.url?eid=2-s2.0-0035556105&partnerID=MN8TOARS
Source: ORCID
Added: October 8, 2020
2001 journal article
Wavelet packet-based subband adaptive equalization
Signal Processing, 81(8), 1641–1662.
Contributors: N. Prelcic *, F. González * & M. Jiménez *
author keywords: adaptive filtering; channel equalization; wavelet packets; tree structured filter banks; best basis selection
TL;DR:
Experimental results for the learning curves show the efficiency of the proposed schemes and illustrating the previously presented theoretical results show that faster convergence is achieved.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
2000 conference paper
New orthogonal extension methods for tree-structured filter banks
European Signal Processing Conference, 2015-March(March). http://www.scopus.com/inward/record.url?eid=2-s2.0-84937047372&partnerID=MN8TOARS
Contributors: M. Jiménez & N. Prelcic
Source: ORCID
Added: October 8, 2020
1999 conference paper
Processing finite length signals via filter banks without border distortions: A non-expansionist solution
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3, 1481–1484. http://www.scopus.com/inward/record.url?eid=2-s2.0-0032639753&partnerID=MN8TOARS
Source: ORCID
Added: October 8, 2020
1998 conference paper
Flexible structure for wavelet packet-based subband adaptive equalization
Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis, 377–380. http://www.scopus.com/inward/record.url?eid=2-s2.0-0031632111&partnerID=MN8TOARS
Contributors: N. Prelcic, F. Gonzalez & A. Gonzalez
Source: ORCID
Added: October 8, 2020
1997 conference paper
Fast noise-scaling algorithm for uniform quantization in audio coding schemes
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 1, 339–342. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030644364&partnerID=MN8TOARS
Contributors: C. Serantes, A. Pena & N. Prelcic
Source: ORCID
Added: October 8, 2020
1997 conference paper
Flexible tiling of the time axis for adaptive wavelet packet decompositions
ICASSP, IEEE International Conference on Acoustics, Speech and Signal Processing - Proceedings, 3, 2137–2140. http://www.scopus.com/inward/record.url?eid=2-s2.0-0030649048&partnerID=MN8TOARS
Contributors: A. Pena, N. Prelcic & C. Serantes
Source: ORCID
Added: October 8, 2020
1996 journal article
A comparison of system architectures for intelligent document understanding
Signal Processing: Image Communication, 9(1), 1–19.
Contributors: G. Farrow*, C. Xydeas*, J. Oakley *, A. Khorabi* & N. Prelcic *
author keywords: document understanding; page layout analysis; document image processing; ODA
TL;DR:
A specific problem within this domain concerning the extraction of the layout structure of pages from a technical journal is addressed and a novel document understanding system which exploits a hybrid bottom-up/top-down control architecture is described.
(via Semantic Scholar)
Source: ORCID
Added: October 8, 2020
1996 journal article
A multipulse-like wavelet-based speech coder
Eurasip Journal on Applied Signal Processing, 3(2), 78–87. http://www.scopus.com/inward/record.url?eid=2-s2.0-17744406405&partnerID=MN8TOARS
Contributors: N. González-Prelcic & D. Docampo
Source: ORCID
Added: October 8, 2020
1996 conference paper
Adaptive tree search algorithm with application to multiresolution based perceptive audio coding
Proceedings of the IEEE-SP International Symposium on Time-Frequency and Time-Scale Analysis, 117–120. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029712709&partnerID=MN8TOARS
Source: ORCID
Added: October 8, 2020
1996 conference paper
Interactive software for a hypertext course in wavelets
IEEE Digital Signal Processing Workshop, 105–108. http://www.scopus.com/inward/record.url?eid=2-s2.0-0029728710&partnerID=MN8TOARS
Contributors: O. Marquez & N. Prelcic
Source: ORCID
Added: October 8, 2020
Employment
Updated: January 2nd, 2024 07:13
2024 - present
University of California, San Diego San Diego, CA, US
Professor
ECE
2020 - 2023
NC State University Raleigh, NC, US
Associate Professor
Electrical and Computer Engineering
2018 - 2020
The University of Texas at Austin Austin, Texas, US
Senior Research Scientist
ECE
2000 - 2018
Universidade de Vigo Vigo, Pontevedra, ES
Associate Professor (currently on leave)
Signal Theory and Communications
Education
Updated: October 8th, 2020 18:43
2020 - present
Universidade de Vigo Vigo, Galicia, ES
PhD Telecommunications Engineering
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