Correlated modulation: a criterion for blind source separation
Jörn Anemüller · 1999
INTRODUCTION The goal of blind source separation is to reconstruct mutually independent source signals s 1 (t); : : : ; s N (t) when only mixtures m 1 (t); : : : ; mM (t) of them can be observed. A minimum set of assumptions regarding the probability density functions or the autocorrelation functions of the sources are made in order to accomplish this. In particular, the geometry of the sensors and sources is completely unknown, hence the term `blind'. The case of an instantaneous, linear, square and invertible mixing of the sources is well-understood. Here, the mixtures are given by m (t) = [m 1 (t) ; : : : ; mN (t)] T = As (t) = A