Fast recovery blind equalization for time-varying channels using "Run-and-Go" approach

Wonzoo Chung, Cheolwoo You

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

In this paper, we propose a blind adaptive equalization scheme for time-varying channels, which combines a blind algorithm based on high order statistics (HOS) and decision-directed (DD) LMS algorithm. In contrast to the "Stop-and-Go" algorithm [1], where DD-LMS adaptation is stopped for unreliable decisions, the proposed algorithm applies a blind algorithm based on HOS for the unreliable decisions. Furthermore, the region of reliable decisions is updated corresponding to the estimated signal quality. Hence, the proposed "Run-and-Go" algorithm inherits MMSE performance of DD-LMS and the (re)acquisition ability of the blind algorithm. Especially, for decision feedback equalizers (DFEs) the proposed algorithm provides robust blind initialization and reacquisition ability under time varying multipath environments.

Original languageEnglish
Pages (from-to)693-696
Number of pages4
JournalIEEE Transactions on Broadcasting
Volume53
Issue number3
DOIs
Publication statusPublished - 2007 Sep 1
Externally publishedYes

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Keywords

  • Adaptive equalization
  • Blind equalization
  • Decision feedback equalizer
  • Multipath channels

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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