A proposal of blind equalizer using kurtosis and skewness

IEICE Electronics Express

Y. Takeichi¹  H. Yashima³  T. Furukawa³  H. Matsumoto² 

[1] Tsuruoka N. College of Tech.;Maebashi institute of tech.;Tokyo Univ. of science

关键词: blind equalization;    orthogonal projection;    kurtosis;    skewness;    UD factorization;   

DOI  :  10.1587/elex.4.33

学科分类：电子、光学、磁材料

来源: Denshi Jouhou Tsuushin Gakkai

【 摘 要 】

References(7)In a transmission system, the conventional adaptive blind equalizers are implemented a direct estimation for the parameters of the equalizers. But both convergence rate of these algorithms and reliability of the regenerated signals degrade down. In this paper, we propose a new equalization system and a new adaptive algorithm using the blind channel estimation for improving these two faults above. In the proposed method, first, we provide a psudo-channel and input signals to the psudo-channel in received part, and characteristics of the channel are adaptivly estimated using simplified kurtosis, skewness of output signals of the channel and the psudo-channel. Secondly, we design the equalizer using an adaptive orthogonal projection algorithm for the estimated channel impulse response matrix. We confirm that convergence rate of the proposed algorithm and reliability of the regenrated signals are better than those of the conventional adaptive blind algorithm by numerical example.

【 授权许可】

Unknown