IEICE Electronics Express
Online ISSN : 1349-2543
ISSN-L : 1349-2543
A proposal of blind equalizer using kurtosis and skewness
H. MatsumotoY. TakeichiT. FurukawaH. Yashima
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2007 Volume 4 Issue 2 Pages 33-41


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.

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© 2007 by The Institute of Electronics, Information and Communication Engineers
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