Optimum space-time processors with dispersive interference: unified analysis and required filter span

Sirikiat Lek Ariyavisitakul, Jack H. Winters, Inkyu Lee

Research output: Contribution to journalArticle

51 Citations (Scopus)

Abstract

In this paper, we consider optimum space-time equalizers with unknown dispersive interference, consisting of a linear equalizer that both spatially and temporally whitens the interference and noise, followed by a decision-feedback equalizer or maximum-likelihood sequence estimator. We first present a unified analysis of the optimum space-time equalizer, and then show that, for typical fading channels with a given signal-to-noise ratio (SNR), near-optimum performance can be achieved with a finite-length equalizer. Expressions are given for the required filter span as a function of the dispersion length, number of cochannel interferers, number of antennas, and SNR, which are useful in the design of practical near-optimum space-time equalizers.

Original languageEnglish
Pages (from-to)1073-1083
Number of pages11
JournalIEEE Transactions on Communications
Volume47
Issue number7
DOIs
Publication statusPublished - 1999

ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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