| 摘要 |
Disclosed is a line synchronization method in an OSD system, applied to an overlapped spectrum duplex OSD system, where the OSD system includes K pairs of communications lines, and each pair of communications lines includes an uplink and a downlink; and the method includes: synchronizing downstream synchronization symbols of downlinks in all of the communications lines; and separately synchronizing an upstream synchronization symbol of an uplink of each pair of communications lines with a downstream synchronization symbol of a downlink of each pair of communications lines. According to embodiments of the present invention, the method may be applied to crosstalk channel estimation, so as to distinguish NEXT and FEXT crosstalk channels when upstream and downstream spectrums are overlapped. |
