Low complexity massive MIMO detection architecture based on Neumann method

Byunggi Kang, Ji Hwan Yoon, Jongsun Park

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

14 Citations (Scopus)

Abstract

Massive (or large-scale) multi-input multi-output (MIMO) technology becomes one of the most promising concept in 5th generation wireless system. In the uplink of a massive MIMO system, large dimensional channel matrix inversion becomes the most challenging issue of hardware implementation. In the previous work, Neumann series based matrix inversion method (Neumann method) was proposed as an approximated inversion method. However, the conventional Neumann method shows a considerable performance degradation compared to the exact matrix inversion. In this paper, we propose a 3-order Neumann method based architecture to achieve a reasonable tradeoff between detection performance and hardware complexity. In the proposed approach, only numerically dominant (diagonal and near diagonal) elements of approximated inversion matrix are judiciously used for a low complexity matrix inversion. The proposed matrix inversion hardware was implemented using 65-nm CMOS process. The experimental results show that our matrix inversion hardware shows 45% area reduction while maintaining a reasonable BER performance.

Original languageEnglish
Title of host publicationISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE)
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages293-294
Number of pages2
ISBN (Print)9781467393089
DOIs
Publication statusPublished - 2016 Feb 8
Event12th International SoC Design Conference, ISOCC 2015 - Gyeongju, Korea, Republic of
Duration: 2015 Nov 22015 Nov 5

Other

Other12th International SoC Design Conference, ISOCC 2015
CountryKorea, Republic of
CityGyeongju
Period15/11/215/11/5

Keywords

  • Large-scale MIMO
  • Matrix inversion
  • Neumann series

ASJC Scopus subject areas

  • Hardware and Architecture
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Kang, B., Yoon, J. H., & Park, J. (2016). Low complexity massive MIMO detection architecture based on Neumann method. In ISOCC 2015 - International SoC Design Conference: SoC for Internet of Everything (IoE) (pp. 293-294). [7401703] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ISOCC.2015.7401703