A matched filter approximation for SC/MMSE iterative equalizers

Author

Omori, Hiroo ; Asai, Takahiro ; Matsumoto, Tadashi

Author_Institution

Wireless Lab., NTT DoCoMo Inc., Kanagawa-ken, Japan

Volume

5

Issue

7

fYear

2001

fDate

7/1/2001 12:00:00 AM

Firstpage

310

Lastpage

312

Abstract

This letter proposes a new iterative ISI equalization algorithm that offers low computational complexity: order L/sup 2/ with channel memory length L. The proposed algorithm is an extension of Reynolds and Wang´s SC/MMSE (soft canceler followed by MMSE filter) equalizer: approximations are used properly to reduce the computational complexity. It is shown that the approximations used in the proposed algorithm do not cause any serious performance degradations from the trellis-based iterative equalization algorithms.

Keywords

computational complexity; equalisers; interference suppression; intersymbol interference; iterative methods; least mean squares methods; matched filters; mobile radio; ISI equalization algorithm; MMSE filter; SC/MMSE iterative equalizers; broadband mobile communication; channel memory length; low computational complexity; matched filter approximation; soft canceler; Adaptive filters; Computational complexity; Degradation; Equalizers; Intersymbol interference; Iterative algorithms; Iterative decoding; Matched filters; Mobile communication; Nonlinear filters;

fLanguage

English

Journal_Title

Communications Letters, IEEE

Publisher

ieee

ISSN

1089-7798

Type

jour

DOI

10.1109/4234.935752

Filename

935752