This paper considers the design of hybrid precoders

and combiners for mmWave MIMO systems with per-antenna

power constraints and the additional limitations introduced by

the phase-shifting network in the analog processing stage. Previous

hybrid designs were obtained using a total power constraint,

but in practical implementations per-antenna constraints are

more realistic, specially at mmWave, given the large number of

power amplifiers used in the transmit array. Assuming perfect

channel knowledge, we obtain first an approximation to the alldigital

solution for the precoder and the combiner given the

per-antenna constraints. Then, we develop a new method for the

design of the hybrid precoder and combiner which attempts to

match such all-digital approximation. Simulation results show

the effectiveness of the proposed approach, which performs close

to the all-digital solution.

%B IEEE Global Telecommunications Conf. (GLOBECOM)
%G eng
%0 Conference Proceedings
%B Information Theory and Applications Workshop (ITA
%D 2016
%T Radar aided mmWave beam alignment in V2I communications supporting antenna diversity
%A Nuria González-Prelcic
%A R. Méndez-Rial
%A R.W. Heath Jr.
%K compass
%K mmWave
%B Information Theory and Applications Workshop (ITA
%8 January, 2016
%G eng
%0 Conference Proceedings
%B 20th International ITG Workshop on Smart Antennas (WSA)
%D 2016
%T Robust Analog Precoding Designs for Millimeter Wave MIMO Transceivers
%A Pengfei Xia
%A Robert Heath
%A Nuria González-Prelcic
%K compass
%K mmWave
%B 20th International ITG Workshop on Smart Antennas (WSA)
%8 March, 2016
%G eng
%0 Conference Proceedings
%B IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)
%D 2015
%T Adaptive Hybrid Precoding and Combining in MmWave Multiuser MIMO Systems based on Compressed Covariance Estimation
%A R. Méndez-Rial
%A Nuria González-Prelcic
%A R. W. Heath Jr.
%K compass
%K mmWave
%B IEEE International Workshop on Computational Advances in Multi-Sensor Adaptive Processing (CAMSAP)
%8 December, 2015
%G eng
%0 Conference Proceedings
%B IEEE Global Telecommunications Conf. (GLOBECOM),
%D 2015
%T ”Adaptive One-bit Compressive Sensing with Application to Low-Precision Receivers at mmWave
%A C. Rusu
%A R. Méndez-Rial
%A Nuria González-Prelcic
%A R. W. Heath, Jr
%K compass
%K mmWave
%B IEEE Global Telecommunications Conf. (GLOBECOM),
%8 December, 2015
%G eng
%0 Conference Paper
%B IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP)
%D 2015
%T An attack on Antenna Subset Modulation for millimeter-wave communication
%A Cristian Rusu
%A Nuria González-Prelcic
%A Robert W. Heath Jr.
%K adversarial signal processing
%K mmWave
%X Antenna subset modulation (ASM) is a physical layer security technique that is well suited for millimeter wave communication systems. The key idea is to vary the radiation pattern at the symbol rate by selecting one from a subset of patterns with a similar main lobe and different side lobes. This paper shows that ASM is not robust to an eavesdropper that makes multiple simultaneous measurements at multiple angles. The measurements are combined and used to formulate an estimation problem to undo the effects of the side lobe randomization. Simulations show the performance of the estimation algorithms and how the eavesdropper can effectively recover the information if the signal-to-noise ratio exceeds a certain threshold. Using fewer active radio frequency chains makes it harder for the attacker to recover the transmit symbol, at the expense of more grating lobes.

%B IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP) %I IEEE %C Brisbane, Australia %P 2914-2918 %8 04/2015 %G eng %0 Conference Paper %B IEEE Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %D 2015 %T Dictionary-free Hybrid Precoders and Combiners for mmWave MIMO Systems %A Roi Méndez-Rial %A Cristian Rusu %A Nuria González-Prelcic %A Robert W. Heath Jr. %K compass %K mmWave %B IEEE Int. Workshop on Signal Processing Advances in Wireless Communications (SPAWC) %I IEEE %C Stockholm, Sweden %8 06/2015 %G eng %0 Conference Paper %B IEEE Int. Conference on Communications (ICC) %D 2015 %T Low Complexity Hybrid Sparse Precoding and Combining in Millimeter Wave MIMO Systems %A Cristian Rusu %A Roi Méndez-Rial %A Nuria González-Prelcic %A Robert W. Heath Jr. %K compass %K mmWave %B IEEE Int. Conference on Communications (ICC) %I IEEE %C London, UK %8 06/2015 %G eng %0 Conference Proceedings %B Asilomar Conf. on Signals, Systems, and Computers %D 2015 %T Low Resolution Adaptive Compressed Sensing for mmWave MIMO receivers %A C. Rusu %A Nuria González-Prelcic %A R.W. Heath Jr. %K compass %K mmWave %B Asilomar Conf. on Signals, Systems, and Computers %8 November, 2015 %G eng %0 Conference Proceedings %B Asilomar Conf. on Signals, Systems and Computers %D 2014 %T Channel estimation in millimeter wave MIMO systems with one-bit quantization %A Jianhua Mo %A Phil Schniter %A Nuria González-Prelcic %A Robert W. Heath Jr. %K asp %K compass %K mmWave %B Asilomar Conf. on Signals, Systems and Computers %G eng %R 10.1109/ACSSC.2014.7094595 %0 Journal Article %J IEEE Communications Magazine %D 2014 %T MIMO Precoding and Combining Solutions for Millimeter Wave Systems %A Ahmed Alkhateeb %A Jianhua Mo %A Nuria González-Prelcic %A Robert W. Heath Jr. %K asp %K mmWave %XMillimeter-wave communication is one way to alleviate the spectrum gridlock at lower frequencies while simultaneously providing high-bandwidth communication channels. MmWave makes use of MIMO through large antenna arrays at both the base station and the mobile station to provide sufficient received signal power. This article explains how beamforming and precoding are different in MIMO mmWave systems than in their lower-frequency counterparts, due to different hardware constraints and channel characteristics. Two potential architectures are reviewed: hybrid analog/digital precoding/combining and combining with low-resolution analog- to-digital converters. The potential gains and design challenges for these strategies are discussed, and future research directions are highlighted.

%B IEEE Communications Magazine %V 52 %P 122-131 %8 12/2014 %G eng %N 12 %R 10.1109/MCOM.2014.6979963