Correlation Reduction Precoding for Joint Decoding in Overloaded MIMO-OFDM System on Rician Channel

Tatsuro Yabe, Yukitoshi Sanada

Research output: Contribution to journalArticle

Abstract

This paper presents a correlation reduction precoding scheme for joint decoding in an overloaded multiple input multiple output (MIMO)-orthogonal frequency division multiplexing system. In the overloaded MIMO system, the number of receive antenna elements is less than that of transmit antenna elements. Through joint maximum likelihood (ML) decoding a frequency diversity suppresses the BER degradation owing to the spatial multiplexing of signal streams. On a Rician channel, the correlation among coded symbols deteriorates the performance of the joint ML decoding. Thus, this paper proposes the precoding scheme that reduces the correlation on the Rician channel. Numerical results obtained through computer simulation show that the proposed scheme improves the BER by a factor of 1/10 on the Rician channel with a Rician factor of 10.

Original languageEnglish
Pages (from-to)3785-3798
Number of pages14
JournalWireless Personal Communications
Volume96
Issue number3
DOIs
Publication statusPublished - 2017 Oct 1

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Keywords

  • Joint decoding
  • OFDM
  • Overloaded MIMO
  • Spatial multiplexing modulation

ASJC Scopus subject areas

  • Computer Science Applications
  • Electrical and Electronic Engineering

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