Patent ID: 11967996
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Telecommunications (Electrical engineering)
Classification: CPC H | IPC H

Claim 10:
11. An optical receiver, wherein the optical receiver comprises a photoelectric detector, an analog-to-digital converter, and a digital signal processor, wherein:
the photoelectric detector is configured to:
receive an optical signal; and
convert the optical signal into an analog electrical signal;

the analog-to-digital converter is configured to convert the analog electrical signal into a digital electrical signal, wherein the digital electrical signal comprises two channels of mutually independent digital electrical signals; and
the digital signal processor is configured to:
receive at least two channels of digital electrical signals;
randomly select the two channels of the mutually independent digital electrical signals from the at least two channels of the digital electrical signals;
obtain a first complex signal, wherein the first complex signal is a first time domain signal, and the first complex signal is obtained based on two channels of mutually independent digital electrical signals;
convert the first complex signal into a frequency domain signal;
multiply the first complex signal in frequency domain by a tap coefficient to obtain a second complex signal, wherein the tap coefficient is used to implement signal compensation for the first complex signal in frequency domain;
convert the second complex signal into a second time domain signal;
divide the second time domain signal into two channels of real signals; and
output the two channels of real signals.