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학술지 A New Blind Equalization Method Based on Negentropy Minimization for Constant Modulus Signals
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저자
최수용, 정종문, 정운철
발행일
200804
출처
IEICE Transactions on Communications, v.E91-B no.4, pp.1207-1210
ISSN
0916-8516
출판사
일본, 전자정보통신학회 (IEICE)
DOI
https://dx.doi.org/10.1093/ietcom/e91-b.4.1207
협약과제
07MD1800, RFID/USN용 센서 태그 및 센서 노드 기술 개발, 표철식
초록
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.