Source Extraction Using Novel NonGaussianity Measure
Keying Liu, Rui Li · 2010
The purpose of this paper is to develop novel Blind Source Extraction (BSE) algorithms from linear mixtures of the statistically dependent source signals. we show that maximization of the non Gaussianity (NG) measure can not only separate the statistically independent but also dependent source signals. The NG measure is defined by statistical distances between distributions based on the cumulative density function instead of traditional probability density function which can be estimated by the order statistics efficiently. The NG distance provide new cost function whose maximization performs the extraction of one dependent component at each successive stage of a delation procedure using an iterative algorithm.