Patent ID: 11923888
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 16:
17. A full-duplex self-interference channel measurement method, wherein the method comprises:
performing first-level self-interference cancellation on a sending signal in a half-duplex timeslot, to obtain a first residual self-interference signal;
performing residual self-interference channel estimation based on the first residual self-interference signal, to obtain an impulse response to a first residual self-interference channel;
time reversal-filtering the sending signal based on the impulse response to the first residual self-interference channel;
performing first-level self-interference cancellation on a time reversal-filtered sending signal, to obtain a second residual self-interference signal;
performing second-level self-interference cancellation on the second residual self-interference signal, to obtain a third residual self-interference signal; and
performing residual self-interference channel estimation based on the third residual self-interference signal, to obtain an impulse response to a second residual self-interference channel, wherein the impulse response to the second residual self-interference channel is applied to digital interference cancellation in a full-duplex timeslot.