| 摘要 |
A method, apparatus and system for crosstalk testing of multi-user communication line, which mainly include: add predetermined orthogonal spectrum spreading code to each line of the transmitter, then perform crosstalk testing on xDSL line based on the signal vector received at the receiver in order to recognize effectively the crosstalk source, crosstalk amplitude and phase, etc. The present invention can perform crosstalk value testing between the lines in real time without effecting the transmission performance of other lines. Moreover, the testing result can reflect how many lines are effecting the tested line greatly and the extent of the effect. The present invention provides the data basis for dynamic spectrum management and DSLAM system performance optimize. |
