A method for fault detecting on twisted pair cable network by use of m-sequence correlation

Monitoring a communication line is significant for broadband, mobile phone and so on. In this paper, we propose a new method for detecting a fault point of communication line by use of m-sequence correlation technique. In this method, signal detection is used. At receiving tap, we make same sequence with the input one and take crosscorrelation function between m-sequence and the received signal. We can get transfer functions of path between a input and output tap separated from different delay times on the crosscorrelation function, and from these transfer functions, so fault point is occurred when we compare them.