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Article Details

Copyright Statement: This is an open access article licensed under a Creative Commons Attribution 4.0 International License, which permits unrestricted use, distribution, and reproduction in any medium, even commercially as long as the original work is properly cited.

Modification of CFCM in The Presence of Heavy AWGN for Bayesian Blind Channel Equalizer

Author 1: Changkyu Kim
Author 2: Soowhan Han

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Digital Object Identifier (DOI) : 10.14569/IJACSA.2014.050708

Article Published in International Journal of Advanced Computer Science and Applications(IJACSA), Volume 5 Issue 7, 2014.

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Abstract: In this paper, the modification of conditional Fuzzy C-Means (CFCM) aimed at estimation of unknown desired channel states is accomplished for Bayesian blind channel equalizer under the presence of heavy additive Gaussian noise (AWGN). For the modification of CFCM to search the optimal channel states of a heavy noise-corrupted communication channel, a Gaussian weighted partition matrix, along with the Bayesian likelihood fitness function and the conditional constraint of ordinary CFCM, is developed and exploited. In the experiments, binary signals are generated at random and transmitted through both types of linear and nonlinear channels which are corrupted with various degrees of AWGN, and the modified CFCM estimates the channel states of those unknown channels. The simulation results, including the comparison with the previously developed algorithm exploiting the ordinary CFCM, demonstrate the effectiveness of proposed modification in terms of accuracy and speed, especially under the presence of heavy AWGN. Therefore, the proposed modification can possibly constitute a search algorithm of optimal channel states for Bayesian blind channel equalizer in severe noise-corrupted communication environments.

Keywords: Gaussian Partition Matrix; Conditional Fuzzy C-Means; Channel States; Bayesian Blind Equalizer

Changkyu Kim and Soowhan Han, “Modification of CFCM in The Presence of Heavy AWGN for Bayesian Blind Channel Equalizer” International Journal of Advanced Computer Science and Applications(IJACSA), 5(7), 2014. http://dx.doi.org/10.14569/IJACSA.2014.050708

@article{Kim2014,
title = {Modification of CFCM in The Presence of Heavy AWGN for Bayesian Blind Channel Equalizer},
journal = {International Journal of Advanced Computer Science and Applications},
doi = {10.14569/IJACSA.2014.050708},
url = {http://dx.doi.org/10.14569/IJACSA.2014.050708},
year = {2014},
publisher = {The Science and Information Organization},
volume = {5},
number = {7},
author = {Changkyu Kim and Soowhan Han}
}


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