A flexible overloaded MIMO receiver with adaptive selection of extended rotation matrices

Satoshi Denno, Akihiro Kitamoto, Ryosuke Sawada

Research output: Contribution to journalArticlepeer-review

Abstract

This paper proposes a novel flexible receiver with virtual channels for overloaded multiple-input multiple-output (MIMO) channels. The receiver applies extended rotation matrices proposed in the paper for the flexibility. In addition, adaptive selection of the extended rotation matrices is proposed for further performance improvement. We propose two techniques to reduce the computational complexity of the adaptive selection. As a result, the proposed receiver gives us an option to reduce the complexity with a slight decrease in the transmission performance by changing receiver configuration parameters. A computer simulation reveals that the adaptive selection attains a gain of about 3 dB at the BER of 103.

Original languageEnglish
Pages (from-to)787-795
Number of pages9
JournalIEICE Transactions on Communications
VolumeE103B
Issue number7
DOIs
Publication statusPublished - Jul 1 2020

Keywords

  • Lattice reduction
  • Min-max approach
  • Overloaded MIMO
  • Single user
  • Virtual channel

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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