| 摘要 |
Provided in an embodiment of the present invention is a signal acquiring method, comprising: a first CPE acquires a signal Z from an out-band frequency band; the signal Z includes signals from original signals of M CPEs on an uplink in-band frequency-band respectively modulated in sequence and transmitted via the out-band frequency band; the first CPE restores an original transmission signal Xi on an ith CPE from an acquired signal Z according to an orthogonal characteristic between sequences. A solution of the embodiment enables a CPE side to acquire a transmission original signal of other CPEs, and enables possibility of an offset of NEXT of the CPE side, without changing a DSL system structure; and enables a random overlap of an uplink frequency band and a downlink band, improving an overall rate of DSL. |
