Patent ID: 6252903
Filing Date: 2001-06-26
Classification: H04L

Abstract:
An improved apparatus for use in receiving a carrierless amplitude modulation/phase modulation (CAP) signal or a quadrature amplitude phase modulation (QAM) signal, the improvement comprisinga receiver that has a dual mode of operation, a CAP mode and a QAM mode, that utilizes only a single equalizer for both the CAP mode of operation and the QAM mode of operationwherein the equalizer has an associated set of tap coefficients, wherein the same equalization updating algorithm is used in either the CAP mode of operation or the QAM mode of operation and wherein the equalization updating algorithm is a blind equalization algorithm having a constant whose value is selected as a function of whether the receiver is in the CAP mode of operation or the QAM mode of operation.