Blind Order Detection and Parameter Estimation of MISO-FIR Channels

Authors:
Carlos Estêvão Fernandes;Pierre Comon;Gérard Favier
Affiliations:
I3S Laboratory, University of Nice Sophia Antipolis, CNRS, Sophia Antipolis Cedex, France 06903;I3S Laboratory, University of Nice Sophia Antipolis, CNRS, Sophia Antipolis Cedex, France 06903;I3S Laboratory, University of Nice Sophia Antipolis, CNRS, Sophia Antipolis Cedex, France 06903
Venue:
ICA '09 Proceedings of the 8th International Conference on Independent Component Analysis and Signal Separation
Year:
2009

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Abstract

We propose a blind algorithm to determine the order and estimate the coefficients of multiple-input single-output (MISO) communication channels. The proposed order detection method exploits the sensitiveness of a Chi-square test statistic to the non Gaussianity of a stochastic process. Order detection is coupled with channel parameter estimation in a nested-loop operation based on a deflation-type technique using the 4th-order output cumulants. Successively treating shorter and shorter channels, we can also determine the number of sources. Simulation results illustrate the performance of the proposed algorithm.