Wavelet Frequency Domain Constant Modulus Blind Equalization Algorithm Based on Fractional Lower Order Statistics-Reference-Cited by-同舟云学术

Wavelet Frequency Domain Constant Modulus Blind Equalization Algorithm Based on Fractional Lower Order Statistics

Published:2012-09 Issue: Volume:198-199 Page:1497-1500
ISSN:1662-7482
Container-title:Applied Mechanics and Materials
language:
Short-container-title:AMM

Author:

Guo Jun¹,Guo Ye Cai¹,Chen Qu¹,Zhao Yi Bo¹

Affiliation:

1. Nanjing University of Information Science and Technology

Abstract

In order to improve the performance of constant modulus algorithm(CMA) in the noise which obeys α-stable distribution, wavelet frequency domain constant modulus blind equalization algorithm based on fractional lower order statistics(WT-FLOSFCMA) is proposed. This proposed algorithm uses fractional lower order statistics to restrain α-stable noise, and its computational loads can be greatly reduced by using FFT technique and the overlapping retention law. In the proposed algorithm, according to the minimum dispersion coefficient criterion, the CMA is optimized, orthogonal wavelet transform is used to improve the convergence rate. The computer simulations in underwater acoustic channels show that the proposed algorithm outperforms than CMA, orthogonal wavelet transform constant modulus algorithm(WT-CMA),and frequency domain blind equalization algorithm based on fractional lower order statistics(FLOSFCMA) in suppressing with inter-symbol interfere, improving convergence rate, and reducing mean square error.

Publisher

Trans Tech Publications, Ltd.

Link

https://www.scientific.net/AMM.198-199.1497.pdf

Reference7 articles.

1. Nikias C L, Shao M. Signal processing with alpha stable distributions and applications[M]. New York: John Wiley & Sons, Inc, (1995).

2. Shao M, Nikias C L. Signal processing with fractional lower order moments: Stable processes and their applications[J]. Proceedings of the IEEE, 1993. 87(1): 986-1010.

3. Xutao Li. Alpha stable distribution model and its application[D]. Doctoral dissertation, Huazhong University of Science and Technology. (2006).

4. Yingge Han. Blind equalizer design and algorithm simulation based on wavelet transform[D]. Master thesis, Anhui University of Science and Technology. (2007).

5. Xuejie Ding. Orthogonal wavelet blind equalization algorithm based on diversity technology[D]. Master thesis, Nanjing University of Information Science and Technology. (2010).