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Journal Article A New Blind Equalization Method Based on Negentropy Minimization for Constant Modulus Signals
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Authors
Soo Yong Choi, Jong-Moon Chung, Wun-Cheol Jeing
Issue Date
2008-04
Citation
IEICE Transactions on Communications, v.E91-B, no.4, pp.1207-1210
ISSN
0916-8516
Publisher
일본, 전자정보통신학회 (IEICE)
Language
English
Type
Journal Article
DOI
https://dx.doi.org/10.1093/ietcom/e91-b.4.1207
Abstract
A new blind adaptive equalization method for constant modulus signals based on minimizing the approximate negentropy of the estimation error for a finite-length equalizer is presented. We consider the approximate negentropy using nonpolynomial expansions of the estimation error as a new performance criterion to improve the performance of a linear equalizer using the conventional constant modulus algorithm (CMA). Negentropy includes higher order statistical information and its minimization provides improved convergence, performance, and accuracy compared to traditional methods, such as the CMA, in terms of the bit error rate (BER). Also, the proposed equalizer shows faster convergence characteristics than the CMA equalizer and is more robust to nonlinear distortion than the CMA equalizer. Copyright © 2008 The Institute of Electronics, Information and Communication Engineers.
KSP Keywords
Adaptive Equalization, Bit Error Rate(And BER), Blind Equalization, Constant Modulus Algorithm(CMA), Constant modulus signals, Faster convergence, Higher order, Improved convergence, Information and communication, Statistical information, Traditional methods