Bussgang Methods for Separation of Multipath Mixtures

                           Russel Lambert,
                  Dept of Electrical Engineering
             University of South California,  USA

                
                            Abstract

 Algorithms for adapting FIR filters can also be applied to adaptation of 
 FIR separation matrices (with multipath) for source separation. Fast 
 converging algorithms robust to eigenvalue disparity are of interest, 
 such as the exact least squares methods from the area of adaptive filters.
 Time domain adaptive multichannel blind recursive least squares (MBRLS) is
 presented. Three frequency domain algorithms based on the Bussgang property 
 are given, two of which exhibit improved performance compared to the 
 traditional Bussgang blind algorithms. The serial update method is studied 
 as a fast blind update.