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, Kommunikations- och antennsystem, Kommunikationssystem

Giuseppe Durisi

Informations- och kommunikationsteknik

Tom Goldstein

University of Maryland

Christoph Studer

Cornell Tech

CONFERENCE RECORD OF THE 2019 FIFTY-THIRD ASILOMAR CONFERENCE ON SIGNALS, SYSTEMS & COMPUTERS

1058-6393 (ISSN)

178-183

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

Ämneskategorier

Telekommunikation

Kommunikationssystem

Signalbehandling

DOI

10.1109/IEEECONF44664.2019.9048799

ISBN

9781728143002

Mer information

Senast uppdaterat

2020-11-20