Patent ID: 8144759
Filing Date: 2012-03-27
Classification: H03H

Abstract:
1. A method for complex adaptive filters used in independent component analysis (ICA) of a source signal after complex down-conversion thereof to a baseband, using mixing matrices, A/D converters and bandpass filters, to generate a baseband observation matrix X which includes said source signal and an interfering signal, the steps of the method including: (a) whitening the observation matrix X by decomposing its co-variant matrices, each component thereof having a weight vector w; (b) initializing an n (c) updating the real imaginary parts w  where  is the convergence factor, one for each row of each weight vector, and independent for the real and imaginary components of the weight vector; and (d) solving equations (A) and (B) above by independently maximizing the total squared kurtosis of the real and imaginary components w