| 摘要 |
Disclosed are a method, apparatus and system for sending a signal. The method comprises: generating a first signal for data to be sent in a first frequency band, wherein the first frequency band refers to a VDSL2 frequency band; generating a first pre-compensation signal for a crosstalk coefficient of a VDSL2 circuit in a second frequency band according to a VDSL3 signal and a VDSL3 circuit of the second frequency band, wherein the second frequency band refers to a VDSL3 frequency band which is not overlapped with the VDSL2 frequency band, and the first pre-compensation signal is used for offsetting an out-of-band far-end crosstalk of the VDSL3 circuit on the VDSL2 circuit after being received by customer premises equipment; and combining the first signal and the first pre-compensation signal into a second signal, and sending the second signal to VDSL2 customer premises equipment. By means of the embodiments of the present invention, a pre-compensation signal of an out-of-band crosstalk of a VDSL3 circuit on a VDSL2 circuit is generated out of a band of a VDSL2, so that a signal of a VDSL2 receiving end does not contain an out-of-band far-end crosstalk. |
