A Low-Complexity Soft-Output Signal Data Detection Algorithm for UL Massive MIMO Systems

Salah Berra, Mahmoud A. M. Albreem, Maha Malek, Rui Dinis, Xingwang Li, Khaled M. Rabie

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

1 Citation (Scopus)

Abstract

In massive multiple-input multiple-output (MIMO) systems, although the performance of maximum likelihood (ML) is the optimum, it introduces extremely high computational complexity, while minimum mean square error (MMSE) receivers can achieve quasi-optimal performance. Unfortunately, it requires a matrix inverse which increases the computational complexity in high loaded environments. Several methods have been proposed to avoid the matrix inversion such as the accelerated over relaxation (AOR). In the AOR algorithm, the initial solution and the optimum parameters have a great impact on the performance, computational complexity, and the convergence rate. In this paper, a detector based on AOR and a stair matrix is proposed to iteratively avoid the inverse of equalization matrix and expediting the convergence rate. In order to obtain high performance and low complexity, suitable schemes for the selection relaxation and acceleration parameters are also proposed. Numerical results show that the computational complexity of the proposed AOR approach is dramatically reduced from O (K3) to O (K2) where K is the number of users. It is also shown that the proposed detection algorithm outperforms the Neumann series method and achieves a quasi-optimal performance with a relatively small number of iterations.

Original languageEnglish
Title of host publicationProceedings of the International Conference on Computer, Information, and Telecommunication Systems, CITS 2021
EditorsMohammad S. Obaidat, Semih Bilgen, Kuei-Fang Hsiao, Petros Nicopolitidis, Sema Oktug, Yu Guo
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781665449137
DOIs
Publication statusPublished - 2021
Event2021 International Conference on Computer, Information, and Telecommunication Systems, CITS 2021 - Istanbul, Turkey
Duration: 11 Nov 202113 Nov 2021

Conference

Conference2021 International Conference on Computer, Information, and Telecommunication Systems, CITS 2021
Country/TerritoryTurkey
CityIstanbul
Period11/11/2113/11/21

Keywords

  • accelerated overrelaxation
  • iterative methods
  • Massive MIMO
  • Neumann series
  • receiver design
  • stair matrix

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