Finite-Alphabet Wiener Filter Precoding for mmWave Massive MU-MIMO Systems
Paper i proceeding, 2019

Power consumption of multi-user (MU) precoding is a major concern in all-digital massive MU multiple-input multiple-output (MIMO) base-stations with hundreds of antenna elements operating at millimeter-wave (mmWave) frequencies. We propose to replace part of the linear Wiener filter (WF) precoding matrix by a finite-alphabet WF precoding (FAWP) matrix, which enables the use of low-precision hardware that consumes low power and area. To minimize the performance loss of our approach, we present methods that efficiently compute FAWP matrices that best mimic the WF precoder. Our results show that FAWP matrices approach infinite-precision error-rate and error-vector magnitude performance with only 3-bit precoding weights, even when operating in realistic mmWave channels. Hence, FAWP is a promising approach to substantially reduce power consumption and silicon area in all-digital mmWave massive MU-MIMO systems.

Författare

Oscar Castaneda

Cornell Tech

Sven Jacobsson

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Giuseppe Durisi

Chalmers, Elektroteknik, Kommunikation, Antenner och Optiska Nätverk

Tom Goldstein

University of Maryland

Christoph Studer

Cornell Tech

Conference Record - Asilomar Conference on Signals, Systems and Computers

10586393 (ISSN)

Vol. 2019-November 178-183
978-1-7281-4300-2 (ISBN)

53rd Asilomar Conference on Signals, Systems, and Computers
Pacific Grove, CA, USA,

Styrkeområden

Informations- och kommunikationsteknik

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/IEEECONF44664.2019.9048799

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2024-07-17