Patent ID: 7433908
Filing Date: 2008-10-07
Classification: H03H,H04B

Abstract:
1. A method for performing adaptive filtering, comprising: calculating metrics of subsets, at a given filtering iteration, of input signal values and adaptive filter coefficients of blocks, which compose an adaptive filter, calculating the metrics including forming a weighting matrix as a function of the adaptive filter coefficients and calculating a weighted power of the subsets of the input signal values in the blocks through use of the weighting matrix to obtain the metrics; comparing the metrics to select a given subset of the blocks to update; updating the adaptive filter coefficients in the selected given subset of the blocks to apply to input signal values during a next filtering iteration; filtering input signal values during the next filtering iteration with the blocks including the given selected subset of blocks with coefficients in an updated state to produce output signal values, being the input signal values in a filtered state; and outputting the output signal values.