Title :
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
fDate :
7/1/2001 12:00:00 AM
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;
Journal_Title :
Communications Letters, IEEE
DOI :
10.1109/4234.935752
