Patent ID: 9059786
Filing Date: 2015-06-16
Classification: H04B,H04L

Abstract:
1. A method for use in a receiver of a communication system for suppressing one or more narrow band interferences present in a communication channel, the method comprising: receiving at the receiver a communication signal from the communication channel; filtering in the communication signal each narrow band interference to be suppressed in turn with a respective one of a plurality of Infinite Impulse Response (IIR) notch filters configured to suppress a respective one of the narrow band interferences; providing a Decision Feedback Equalizer (DFE) to provide compensation for distortions introduced by the plurality of IIR notch filters, wherein equalization of the communication channel is isolated or decoupled from the suppression of the narrow band interferences; and providing for each of the plurality of IIR notch filters prior to said DFE a respective one of a plurality of IIR all-pass filters devised to compensate for distortions introduced by a respective notch filter, to minimize the distortions introduced by each of the plurality of IIR notch filters to the communication signal prior to said DFE.