A fast computation algorithm for the decision feedback equalizer in a magnetic recording channel

Author

Lee, Inkyu ; Cioffi, John M.

Author_Institution

Inf. Syst. Lab., Stanford Univ., CA, USA

Volume

2

fYear

1994

fDate

28 Nov- 2 Dec 1994

Firstpage

1152

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 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 performance of the fast algorithm is evaluated through simulation. Results of simulation show the superiority of the proposed scheme

Keywords

correlation methods; decision feedback equalisers; discrete Fourier transforms; filtering theory; magnetic recording; matrix algebra; telecommunication channels; DFT; channel estimation; circulant matrices; coefficients; correlation matrices approximation; decision feedback equalizer; discrete Fourier transform; equalizer filters; fast computation algorithm; frequency domain; magnetic recording channel; performance evaluation; simulation; Decision feedback equalizers; Filters; Forward error correction; Magnetic recording; Magnetic separation;

fLanguage

English

Publisher

ieee

Conference_Titel

Global Telecommunications Conference, 1994. GLOBECOM '94. Communications: The Global Bridge., IEEE

Conference_Location

San Francisco, CA

Print_ISBN

0-7803-1820-X

Type

conf

DOI

10.1109/GLOCOM.1994.512838

Filename

512838