| 摘要 |
A crosstalk channel estimation method. The method comprises: synchronizing downlink synchronization symbols of downlinks in all communication links; synchronizing an uplink synchronization symbol of an uplink in each pair of communication links with a downlink synchronization symbol of a downlink in the pair of communication links respectively; allocating pilot frequency sequences to K pairs of communication links; controlling a downlink sender to send downlink pilot frequency sequences in the downlink synchronization symbols of the downlinks in all the communication links, and controlling an uplink sender to send uplink pilot frequency sequences in uplink synchronization symbols of uplinks in all the communication links; acquiring a downlink feedback error of the downlink pilot frequency sequences and an uplink feedback error of the uplink pilot frequency sequences in each pair of communication links; and performing crosstalk channel estimation on an OSD system according to the uplink feedback error and the downlink feedback error. By means of the embodiments of the present invention, when uplink and downlink frequency spectra overlap, distinguishing channels of two crosstalks, NEXT and FEXT, may be realized. |
