Reduced complexity MLSD equalizers based on bidirectional DFEs

Jangwoo Park, Youngsun Ha, Wonzoo Chung

Research output: Contribution to journalArticlepeer-review

3 Citations (Scopus)


We propose a reduced complexity maximum likelihood sequence detection (MLSD) equalizer for wireless communications using bidirectional decision feedback equalizers (DFEs). We apply reducedlength two-level estimates produced by a bidirectional DFE. Therefore, the computationally expensive MLSD algorithm is applied sparingly for twolevel signals with the effective channel length shorter than the original channel, regardless of the original constellation size of the symbols. Simulation results show that the proposed algorithm outperforms existing combination schemes based on bidirectional DFEs, especially for large constellations.

Original languageEnglish
Pages (from-to)3432-3436
Number of pages5
JournalIEICE Transactions on Communications
Issue number11
Publication statusPublished - 2012 Nov


  • Bidirectional DFE
  • Bidirectional arbitrated DFE (BAD)
  • Equalizer
  • MLSD equalizer
  • Time-reversal diversity

ASJC Scopus subject areas

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


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