A VLSI implementation of angular-domain massive MIMO detection

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding

Abstract

This paper presents an angular-domain massive MIMO detector which exploits sparsity in massive MIMO channel along with a reconfigurable systolic array architecture to achieve high area efficiency. The underlying idea is to perform signal detection in the angular domain, where the channel matrix can have much lower dimension due the limited number of dominant angles (of arrival and departure) of the wireless signal. Evaluated using the measured massive MIMO channel, the proposed method results in 40%-70% reduction in processing complexity and memory requirements compared to traditional antenna-domain detection. This complexity reduction enables extensive hardware reuse where all the operations of detection processing are mapped to a condensed reconfigurable systolic array. The angular-domain zero-forcing detector, which supports 128 base station antennas and 16 users is implemented in a 28 nm FD-SOI technology. Synthesis result shows that our design attains a throughput of 510 MSps with an area of 537 kG.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Communication Systems
  • Other Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • Massive MIMO Detection, VLSI implementation, angular domain, channel sparsity, Cholesky decomposition, systolic array, linear detection
Original languageEnglish
Title of host publicationIEEE International Symposium on Circuits and Systems (ISCAS) 2019 - Proceedings
PublisherIEEE - Institute of Electrical and Electronics Engineers Inc.
Pages1-5
Number of pages5
ISBN (Electronic)9781728103976
ISBN (Print)978-1-7281-0398-3
Publication statusPublished - 2019
Publication categoryResearch
Peer-reviewedYes
Event2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019 - Sapporo, Japan
Duration: 2019 May 262019 May 29

Conference

Conference2019 IEEE International Symposium on Circuits and Systems, ISCAS 2019
CountryJapan
CitySapporo
Period2019/05/262019/05/29