ISDN CROSSTALK CANCELLATION IN DSL SYSTEM

摘要

PROBLEM TO BE SOLVED: To solve the problem that the efficiency of a DSL receiver is lowered because a near-end cross talk NEXT period of DSL transmission is made unavailable by TCM-ISDN cross talk. SOLUTION: To reduce the ISDN crosstalk in an incoming DSL signal, a crosstalk canceller observs at least part of the crosstalk signal in the DSL signal and reproduces a predicted crosstalk signal for at least part of that signal within the DSL band. The crosstalk canceller applies a canceling signal based on the estimated crosstalk signal to reduce the crosstalk in the received DSL signal. COPYRIGHT: (C)2005,JPO&NCIPI