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URLLC with coded massive MIMO via random linear codes and GRAND

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Publication date18/01/2023
Host publication2022 IEEE 96th Vehicular Technology Conference (VTC2022-Fall)
PublisherIEEE
Pages1-5
Number of pages5
ISBN (Electronic)9781665454681
ISBN (Print)9781665454698
<mark>Original language</mark>English
Event96th IEEE Vehicular Technology Conference - London, United Kingdom
Duration: 26/09/202229/09/2022

Conference

Conference96th IEEE Vehicular Technology Conference
Abbreviated titleVTC
Country/TerritoryUnited Kingdom
CityLondon
Period26/09/2229/09/22

Publication series

NameIEEE Vehicular Technology Conference
PublisherIEEE
Volume2022-Sep
ISSN (Print)1090-3038
ISSN (Electronic)2577-2465

Conference

Conference96th IEEE Vehicular Technology Conference
Abbreviated titleVTC
Country/TerritoryUnited Kingdom
CityLondon
Period26/09/2229/09/22

Abstract

A present challenge in wireless communications is the assurance of ultra-reliable and low-latency communication (URLLC). While the reliability aspect is well known to be improved by channel coding with long codewords, this usually implies using interleavers, which introduce undesirable delay. Using short codewords is a needed change to minimizing the decoding delay. This work proposes the combination of a coding and decoding scheme to be used along with spatial signal processing as a means to provide URLLC over a fading channel.
The paper advocates the use of random linear codes (RLCs) over a massive MIMO (mMIMO) channel with standard zero-forcing detection and guessing random additive noise decoding (GRAND). The performance of several schemes is assessed over a mMIMO flat fading channel. The proposed scheme greatly outperforms the equivalent scheme using 5G's polar encoding and decoding for signal-to-noise ratios (SNR) of interest. While the complexity of the polar code is constant at all SNRs, using RLCs with GRAND achieves much faster decoding times for most of the SNR range, further reducing latency.

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©2022 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE.