Browse > Article
http://dx.doi.org/10.5370/KIEE.2010.59.2.476

A Subband Adaptive Blind Equalization Algorithm for FIR MIMO Systems  

Sohn, Sang-Wook (충북대학교 전기공학과)
Lim, Young-Bin (충북대학교 전기공학과)
Choi, Hun (동의대학교 전자공학과)
Bae, Hyeon-Deok (충북대학교 전자정보대학 전기공학과)
Publication Information
The Transactions of The Korean Institute of Electrical Engineers / v.59, no.2, 2010 , pp. 476-483 More about this Journal
Abstract
If the data are pre-whitened, then gradient adaptive algorithms which are simpler than higher order statistics algorithms can be used in adaptive blind signal estimation. In this paper, we propose a blind subband affine projection algorithm for multiple-input multiple-output adaptive equalization in the blind environments. All of the adaptive filters in subband affine projection equalization are decomposed to polyphase components, and the coefficients of the decomposed adaptive sub-filters are updated by defining the multiple cost functions. An infinite impulse response filter bank is designed for the data pre-whitening. Pre-whitening procedure through subband filtering can speed up the convergence rate of the algorithm without additional computation. Simulation results are presented showing the proposed algorithm's convergence rate, blind equalization and blind signal separation performances.
Keywords
Bind Signal Equalization; MIMO; Subband Affine; Filter Bank;
Citations & Related Records

Times Cited By SCOPUS : 0
연도 인용수 순위
  • Reference
1 P. P. Vaidyanathan, Multirate systems and Filterbanks, NJ: Prentice Hall 1993.
2 I. russell, J. Xi, A. Mertins, and J. Chicharo, "Blind Source Separation of Nonstationary Convolutively Mixed Signals in The Subband Domain," in Proc. ICASSP 2004, Vol.5, pp.481-484, May 2004.
3 Ali H. Sayed, Fundamentals of adaptive Filtering, NJ: Wiley Inter-Science, 2003.
4 K. Kokkinakis and P. C. Loizou, "Subband-Based Blind Signal Processing for Source Separation in Convolutive Mixtures of Speech," in Proc. ICASSP 2007, Vol.4, pp.917-920, May 2007.
5 H. H. Dam, A Cantone, S. Nordholm, and K. L. Teo, "Second-Order Blind Signal Separation for Convolutive Mixtures using Conjugate Gradient," IEEE Signal Processing Lett., Vol.15, pp.79-82, 2008.   DOI
6 Xiao-Lang Zhu and Xian-Da Zhang, "Adaptive RLS Algorithm for Blind Source Separation using a Natural Gradient," IEEE Signal Processing Lett., Vol.9, No.12, pp.432-435. Dec. 2002.   DOI   ScienceOn
7 Y.(Geoffery) Li and K. J. R. Liu, "Adaptive Blind Source Separation and Equalization for Multiple-Input/Multiple-Output Systems," IEEE Trans. an Information Theory, Vol. 44, No. 7, pp. 2864-2876, Nov. 1998.   DOI   ScienceOn
8 Shoji Makino, Te-Won Lee, and Hiroshi Sawada, Blind Speech Separation, Springer, 2007.
9 H. Choi and H. D. Bae, "Subband Affine Projection Algorithm for Acoustic Echo Cancellation System," EURASIP Journal on Applied Signal Processing, Vol. 2007 pp. 1-11, Dec. 2006.
10 Simon Haykin, Unsupervised adaptive filtering, NJ: Wiley Inter-Science, 2000.