Blind source separation in the presence of weak source

Details Blind source separation in the presence of weak source Blind source separation in the presence of weak source

2000-05-16

arxiv.org/abs/cond-mat/0005258v1

Physics

Condensed Matter

Statistical Mechanics

Accepted for publication in Neural Networks

Scientific paper

We investigate the information processing of a linear mixture of independent sources of different magnitudes. In particular we consider the case where a number $m$ of the sources can be considered as ``strong'' as compared to the other ones, the ``weak'' sources. We find that it is preferable to perform blind source separation in the space spanned by the strong sources, and that this can be easily done by first projecting the signal onto the $m$ largest principal components. We illustrate the analytical results with numerical simulations.

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