A Fast Computation Algorithm for the Decision Feedback Equalizer

Inkyu Lee, John M. Cioffi

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

A novel fast algorithm for computing the decision feedback equalizer settings is proposed. The equalizer filters are computed indirectly, first by estimating the channel, and then by computing the coefficients in the frequency domain with the discrete Fourier transform (DFT). Approximating the correlation matrices by circulant matrices facilitates the whole computation with very small performance loss. The fractionally spaced equalizer settings are derived. The performance of the fast algorithm is evaluated through simulation. The effects of the channel estimation error and finite precision arithmetic are briefly analyzed. Results of simulation show the superiority of the proposed scheme.

Original languageEnglish
Pages (from-to)2742-2749
Number of pages8
JournalIEEE Transactions on Communications
Volume43
Issue number11
DOIs
Publication statusPublished - 1995 Nov

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering

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