公开(公告)号：US12088349B2

公开(公告)日：2024-09-10

申请号：US17941360

申请日：2022-09-09

Applicant: HUAWEI TECHNOLOGIES CO., LTD.

Inventor： Solovev Dmitry ,  Jie Chen ,  Jiashen Tian

IPC: H04B10/58

CPC classification number: H04B10/58

Abstract: A signal pre-compensation method is provided. In the method, at least one target frequency subband is determined from a plurality of frequency subbands of a first optical signal and an optical signal of the at least one target frequency subband in the first optical signal is demodulated based on the at least one target frequency subband. A first electrical signal is obtained after demodulation, and a pre-compensation parameter is updated based on the at least one target frequency subband, the first electrical signal, and a second electrical signal. Herein the pre-compensation parameter is used to perform signal pre-compensation on the second electrical signal, and the first optical signal is generated after the pre-compensation is performed on the second electrical signal.