Decorrelation of multiple non-stationary sources using a multivariable crosstalk-resistant adaptive noise canceller

摘要

A new structured approach to adaptive noise cancelling of non-stationary stochastic signals is given. The divide and conquer method subdivides the problem into a number of sources with a power of 2 and subdivides the solution to smaller problems in a similar fashion to that of an FFT. Hence, with the number of sources 2~p, where p is a positive integer, the problem is successively reduced to simpler solutions at each stage of order 2~(p-1). In its basic form, the method uses only multivariable least mean squares (MLMS), ordinary LMS, and second-order statistics. Copyright.