US 11,902,073 B2
Signal transmission method and apparatus
Xu Li, Shenzhen (CN); Jingjing Huang, Shenzhen (CN); and Junping Zhang, Shenzhen (CN)
Assigned to Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed by Huawei Technologies Co., Ltd., Shenzhen (CN)
Filed on Nov. 14, 2022, as Appl. No. 17/986,406.
Application 17/986,406 is a continuation of application No. PCT/CN2021/088844, filed on Apr. 22, 2021.
Claims priority of application No. 202010414393.6 (CN), filed on May 15, 2020.
Prior Publication US 2023/0084731 A1, Mar. 16, 2023
Int. Cl. H04L 27/26 (2006.01); H04L 5/00 (2006.01)
CPC H04L 27/2628 (2013.01) [H04L 5/0048 (2013.01); H04L 27/2634 (2013.01)] 20 Claims
OG exemplary drawing
 
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.