Patent ID: 6269165
Filing Date: 2001-07-31
Classification: H03H,H04B,H04R

Abstract:
A method of reducing the feedback caused between the output and the input of an amplification path, comprising the steps of:providing a delay for incorporation in the amplification path, said delay providing a delay period greater than the delay in the feedback path;introducing into the amplification path a noise signal having an auto-correlation function which is substantially a delta function;correlating the signal in said amplification path before the delay with the noise signal taken after said delay to produce a plurality of correlation coefficients;modifying a signal taken from the amplification path after said delay to provide a modified signal, the modification being provided by a transversal filter controlled by the said plurality of correlation coefficients; andcombining the modified signal with the signal in the amplification path prior to said delay so as to reduce the effect of the feedback.