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

Claim 0:
1. A method, comprising:
obtaining a first signal with N points, wherein N is a positive even number;
determining a second signal with N points and a third signal with N points based on the first signal, wherein a fourth signal with N/2 points and a fifth signal with N/2 points are determined based on the second signal, and wherein a sixth signal with N/2 points and a seventh signal with N/2 points are determined based on the third signal;
determining an eighth signal with 3N/2 points based on the fourth signal, the fifth signal, the sixth signal, and the seventh signal, wherein the eighth signal is an orthogonal frequency division multiplexing (OFDM) signal to be carried in an optical signal; and
sending the eighth signal in the optical signal,
wherein the second signal is obtained by setting a signal at an even location in the first signal to 0, and wherein the third signal is obtained by setting another signal at an odd location in the first signal to 0.