Patent ID: 11902073
Assignee: HUAWEI TECHNOLOGIES CO., LTD.
Field: Digital communication (Electrical engineering)
Classification: CPC H  Y | IPC H

Claim 5:
6. A method, comprising:
obtaining an eighth signal with 3N/2 points, wherein the eighth signal is an orthogonal frequency division multiplexing (OFDM) signal carried in an optical signal, and wherein the eighth signal comprises three signals of an eleventh signal with N/2 points, a twelfth signal with N/2 points, a thirteenth signal with N/2 points, or a fourteenth signal with N/2 points;
determining a signal from the eleventh signal, the twelfth signal, the thirteenth signal, and the fourteenth signal other than the three signals comprised in the eighth signal; and
determining a first signal with N points based on the eleventh signal, the twelfth signal, the thirteenth signal, and the fourteenth signal,
wherein N is a positive even number.