Patent ID: 6804695
Filing Date: 2004-10-12
Classification: H03H

Abstract:
Apparatus for constraining tap coefficients in an adaptive Finite Impulse Response filter, comprising:coefficient supply circuitry disposed to provide at least two even tap coefficients and at least two odd tap coefficients to the adaptive Finite Impulse Response filter, wherein the at least two even tap coefficients are grouped into a plurality of groups of even tap coefficients and the at least two odd tap coefficients are grouped into a plurality of groups of odd tap coefficients; and constraint circuitry which selectively constrains changes in the values of at least one of (i) even tap coefficients in at least one of the plurality of groups of even tap coefficients and (ii) odd tap coefficients in at least one of the plurality of groups of odd tap coefficients, wherein a change in value of tap coefficients in a group of tap coefficients is independent of changes in values of tap coefficients in other groups of tap coefficients.