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Multistage second order blind signal separation

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Authors
Dam, Hai Huyen
Nordholm, Sven
Date
2007
Type
Conference Paper

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Citation
Dam, Hai Huyen and Nordholm, Sven. 2007. Multistage second order blind signal separation, in M. Fukushima et al (ed), The 7th International Conference on Optimization : Techniques and Applications, Dec 12 2007. Japan: Universal Academy Press
Source Title
Proceedings of the 7th International Conference on Optimization : Techniques and Applications
Source Conference
The 7th International Conference on Optimization : Techniques and Applications
Faculty
Western Australian Telecommunications Research Institute (WATRI)
Faculty of Science and Engineering
School
Western Australian Telecommunications Research Institute (Research Institute)
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Abstract

In this paper, we present a scheme which improve the convergence for the multistage second-order gradient based blind signal separation (BSS) algorithm. For the multistage second-order BSS, the constraints for each stage is relax where the constraints are formulated to ease the permutation effects. The presented scheme utilizes a search method in each iteration and each stage for an optimum step size. Evaluations of the proposed scheme in a real room environment show that the search for the optimum step size results in significantly faster convergence for the multistage BSS when compared with fixed step size gradient based algorithm.