多模盲均衡算法剩余码间干扰的近似表达式

doi:10.3969/j.issn.1001-2400.2014.01.031

J4 ›› 2014, Vol. 41 ›› Issue (1): 176-181.doi: 10.3969/j.issn.1001-2400.2014.01.031

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Approximated expression for the achievable residual intersymbol interference obtained by multimodulus blind equalizers

WANG Cheng;YANG Bin

(Institute of Information System Engineering, PLA Information Engineering Univ., Zhengzhou 450002， China)

Received:2012-11-01 Online:2014-02-20 Published:2014-04-02
Contact: WANG Cheng E-mail:melody198819@163.com

Abstract

Abstract:

A closed approximated formed expression for the achievable residual inter-symbol interference(ISI) is proposed for the adaptive equalizers that adopt the multimodulus algorithm. The expression depends on the step-size parameter, equalizer's tap length, input signal statistics, signal noise ratio and channel power. Simulation proves that the expression shows the exact relationship between residual inter-symbol interference and involved parameters. Since the channel power and signal noise ratio of the expression are measurable or can be calculated, this new approximated expression can be a useful tool for choosing the step-size and tap length for designing an equalizer, and for making direct performance comparison between blind equalizers based on distinct algorithms.

Key words: adaptive blind equalization, multimodulus algorithm, expression of inter symbol interference

WANG Cheng;YANG Bin. Approximated expression for the achievable residual intersymbol interference obtained by multimodulus blind equalizers[J].J4, 2014, 41(1): 176-181.

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Approximated expression for the achievable residual intersymbol interference obtained by multimodulus blind equalizers

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