Patent ID: 6735264
Filing Date: 2004-05-11
Classification: H04L

Abstract:
A method of compensating for self-interference in a signal received at a receiver, the receiver comprised of a multi-rate filter bank having wavelet functions as filter coefficients, the signal comprised of plural, wavelet-encoded sub-bands overlapping in time and in frequency, the method comprising:receiving the signal at the receiver; rotating the received signal by passing the received signal through the multi-rate filter bank to produce a rotated signal set comprised of plural bands; filtering the rotated signal set through a second filter bank having respective band coefficients each calculated from wavelet inner products at a first value of differential variance in a selected metric as between one band and an adjacent band, the second filter bank providing a measure of self-interference for each band; defining a weighting function based upon a measured value of the differential variance in the selected metric as between the one band and the adjacent band; applying the weighting function to the measure of self-interference for each band to produce a correction factor for each band; and subtracting the correction factor for each band from the received signal.