Extraction of Specific Signals with Temporal Structure

Authors:
Allan Kardec Barros;Andrzej Cichocki
Affiliations:
Bio-mimetic Control Research Center, RIKEN, Moriyama-ku, Shimoshidami, Nagoya 463-0003, Japan;Brain Science Institute, RIKEN, Wako-shi, Saitama 351-01, Japan
Venue:
Neural Computation
Year:
2001

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Abstract

In this work we develop a very simple batch learning algorithm for semiblind extraction of a desired source signal with temporal structure from linear mixtures. Although we use the concept of sequential blind extraction of sources and independent component analysis, we do not carry out the extraction in a completely blind manner; neither do we assume that sources are statistically independent. In fact, we show that the a priori information about the autocorrelation function of primary sources can be used to extract the desired signals (sources of interest) from their linear mixtures. Extensive computer simulations and real data application experiments confirm the validity and high performance of the proposed algorithm.