Patent ID: 9548792
Date: 2017-01-17
CPC Classifications: H04B,H04M

Claim:
1. A method of updating a crosstalk cancellation matrix for use in a communication system having at least a first transmission path and a plurality of second transmission paths, the communication system to provide crosstalk cancellation based on the crosstalk cancellation matrix, the method comprising: providing an error estimate value to represent an estimated first part error of a signal transmission via the first transmission path due to a crosstalk from a first one of the plurality of second transmission paths to the first transmission path based on the crosstalk cancellation matrix, a transmit power on the first one of the plurality of second transmission paths and a transmit power on the first transmission path while the crosstalk from the first one of the plurality of second transmission paths to the first transmission path is subject to a crosstalk cancellation; providing an error value to represent a second part error of the signal transmission via the first transmission path due to the crosstalk from a second one of the plurality of second transmission paths to the first transmission path while the crosstalk from the second one of the plurality of second transmission paths to the first transmission path is excluded from the crosstalk cancellation, wherein the providing the error value comprising transmitting a test signal sequence via the first communication path; and updating crosstalk cancellation matrix coefficient values on a basis of at least the error value and the error estimate value to provide an updated crosstalk cancellation matrix; and reducing the crosstalk in the communication system based on the updated crosstalk cancellation matrix.