Patent ID: 7778332
Filing Date: 2010-08-17
Classification: H04B,Y10S

Abstract:
1. A method for performing a crosstalk test in a multi-subscriber communication line, comprising: transmitting a test signal in a selected line during a first predefined continuous period; receiving a crosstalk signal generated by the test signal in a line to be tested, during a second predefined continuous period; calculating a signal sequence of the transmitted signal within the first predefined continuous period according to the test signal; calculating a signal sequence of the received crosstalk signal within the second predefined continuous period according to the received crosstalk signal; processing the signal sequence of the transmitted signal and the ratio of the first predefined continuous period to the second predefined continuous to obtain a corresponding head-to-tail signal sequence; performing a cross correlation calculation between the obtained head-to-tail signal sequence and the signal sequence of the received crosstalk signal within the second predefined continuous period to obtain a calculation result; determining whether there is crosstalk between the line to be tested and the selected line according to the calculation result; and determining the value of any existing crosstalk.