Complexity reduced lattice-reduction-aided mimo receiver with virtual channel detection

Shogo Yoshikawa, Satoshi Denno, Masahiro Morikura

Research output: Contribution to journalArticle

15 Citations (Scopus)

Abstract

This paper proposes a lattice-reduction-aided MIMO-OFDM receiver with virtual channels; the receiver enables an increase in the downlink transmission speed for a user where the number of transmit antennas is considerably higher than that of the receive antennas. However, the receiver has a higher computational complexity than conventional lattice-reduction-aided MIMO receivers. Accordingly, we also propose novel techniques to reduce the computational complexity for the lattice-reduction-aided MIMO receivers with virtual channels. The proposed MIMO receiver achieves superior performance in 10 x 2 MIMO-OFDM systems. Furthermore, the proposed techniques are shown to reduce the computational complexity to approximately 40% of the original configuration in the 10 x 2 MIMO-OFDM systems.

Original languageEnglish
Pages (from-to)263-270
Number of pages8
JournalIEICE Transactions on Communications
VolumeE96-B
Issue number1
DOIs
Publication statusPublished - Jan 2013

Keywords

  • Lattice reduction
  • MIMO
  • OFDM
  • Spatial multiplexing
  • Virtual channel

ASJC Scopus subject areas

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

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