Low-complexity hybrid analog-digital signal detector for uplink multiuser massive MIMO systems

Yinman Lee, Meng Wei Liang, Sok Ian Sou

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this paper, we propose a low-complexity hybrid analog-digital signal detector for uplink multiuser massive multiple-input multiple-output (MIMO) systems. Specially, both the hardware cost and computation load can be reduced. The analog part consists of phase shifters only which are tuned by the idea of equal-gain combining (EGC) for each data stream. Thus, no additional optimization is required, and the number of radio-frequency (RF) chains decreases at the same time. In the digital part, the Gauss-Seidel (GS) iteration with decision is then used to extract the transmitted symbols from all uplink users. Simulation results show that our proposed hybrid processing method provides similar bit-error rate (BER) performance as compared with the fully-digital minimum mean-squared error (MMSE)/zero-forcing (ZF) detection, and is even better for some cases. When considering the complexity reduction, it is an attractive way for giving a good compromise between the error rate and complexity.

Original languageEnglish
Title of host publication2019 IEEE 8th Global Conference on Consumer Electronics, GCCE 2019
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages415-416
Number of pages2
ISBN (Electronic)9781728135755
DOIs
Publication statusPublished - 2019 Oct
Event8th IEEE Global Conference on Consumer Electronics, GCCE 2019 - Osaka, Japan
Duration: 2019 Oct 152019 Oct 18

Publication series

Name2019 IEEE 8th Global Conference on Consumer Electronics, GCCE 2019

Conference

Conference8th IEEE Global Conference on Consumer Electronics, GCCE 2019
Country/TerritoryJapan
CityOsaka
Period19-10-1519-10-18

All Science Journal Classification (ASJC) codes

  • Instrumentation
  • Artificial Intelligence
  • Computer Networks and Communications
  • Computer Science Applications
  • Electrical and Electronic Engineering

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