Fourth order criteria for blind separation of sources
Résumé
Various criteria based on contrast functions as well as higher order statistics are used for solving the problem of blind separation of sources. In as correspondence| for the case of Instantaneous mixtures of two sources, it is proved that the minimization of the cancellation of a really simple criterion, a fourth-order cross-cumulant, leads to a set of solutions whoose spurious ones can simply cancelled by using a decorrelation.