Energy Efficiency Comparison of Digital and Hybrid Precoding in 1-Bit mmWave Massive MIMO

Ferhad Askerbeyli, Wen Xu, Josef A. Nossek

Publikation: Beitrag in Buch/Bericht/KonferenzbandKonferenzbeitragBegutachtung

Abstract

Millimeter wave (mmWave) massive multiple-input-multiple-output (mMIMO) is a key technology for high capacity mobile communications. The straightforward implementation of mMIMO with fully digital precoding (FDP) and high resolution digital-to-analog converters (DACs) ends up with poor energy efficiency (EE) at the transmitter. Use of 1-bit DACs is a promising approach to improve the EE, since the power amplifiers (PAs) are driven with the maximum efficiency when they are fed with constant envelope (CE) signals. In this paper, we evaluate spectral efficiency (SE) and EE performances of FDP and hybrid precoding (HP) in mmWave mMIMO downlink to identify the more compatible option with the 1-bit quantization. Numerical results illustrate that FDP in general achieves higher SE and has higher EE at high signal-to-noise ratio (SNR), whereas HP has higher EE and achieves higher maximum EE at low SNR.

OriginalspracheEnglisch
Titel2023 IEEE 97th Vehicular Technology Conference, VTC 2023-Spring - Proceedings
Herausgeber (Verlag)Institute of Electrical and Electronics Engineers Inc.
ISBN (elektronisch)9798350311143
DOIs
PublikationsstatusVeröffentlicht - 2023
Veranstaltung97th IEEE Vehicular Technology Conference, VTC 2023-Spring - Florence, Italien
Dauer: 20 Juni 202323 Juni 2023

Publikationsreihe

NameIEEE Vehicular Technology Conference
Band2023-June
ISSN (Print)1550-2252

Konferenz

Konferenz97th IEEE Vehicular Technology Conference, VTC 2023-Spring
Land/GebietItalien
OrtFlorence
Zeitraum20/06/2323/06/23

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