Patent ID: 6452967
Filing Date: 2002-09-17
Classification: H04Q

Abstract:
A method for reducing disturbing effects of coupling between a first transmission/reception device and a second transmission/reception device, each of the first and second devices being connected to a subscriber line that conveys streams of symbols in a temporally synchronous manner, each of the symbols being transmitted for a predetermined transmission period, said method comprising the steps of:delaying a signal received on a reception path of the first device by a delay equal to p times the transmission period; estimating a coupling signal relating to a transmission path of a second device and the reception path of the first device based on a signal transmitted over the transmission path of the second device; and ridding the delayed signal of the estimated coupling signal, wherein the estimating step includes the sub-step of estimating the coupling signal based on successive sums of n coefficients of a coupling estimation adaptive filter that are determined based on the signal transmitted over the transmission path of the second device, and n is greater than or equal to p.