DocumentCode :
1403847
Title :
Suboptimal Linear MMSE Equalizers With Minimum Redundancy
Author :
Martins, Wallace A. ; Diniz, Paulo S R
Author_Institution :
Electr. Eng. Program, Fed. Univ. of Rio de Janeiro, Rio de Janeiro, Brazil
Volume :
17
Issue :
4
fYear :
2010
fDate :
4/1/2010 12:00:00 AM
Firstpage :
387
Lastpage :
390
Abstract :
Recent works have proposed practical zero-forcing (ZF) and linear minimum mean squared-error (LMMSE) solutions for fixed and memoryless block-based transceivers with minimum redundancy, using only half the amount of redundancy employed in standard systems. Their equalization processes require only O(M log2 M) operations. However, it may be difficult to apply LMMSE equalizers with minimum redundancy in some practical systems, given their higher number of operations. This letter proposes novel suboptimal LMMSE equalizers with minimum redundancy that require the same amount of computations of ZF equalizers, with a mild decrease in the throughput performance when compared to the optimal LMMSE solution.
Keywords :
OFDM modulation; equalisers; least mean squares methods; redundancy; transceivers; linear MMSE equalizer; linear minimum mean squared-error; memoryless block-based transceivers; redundancy; zero-forcing; Block transceivers; OFDM; displacement; equalization; minimum redundancy; superfast algorithms;
fLanguage :
English
Journal_Title :
Signal Processing Letters, IEEE
Publisher :
ieee
ISSN :
1070-9908
Type :
jour
DOI :
10.1109/LSP.2010.2042515
Filename :
5406133
Link To Document :
بازگشت