US 11,991,026 B2
Channel flatness compensation method and apparatus, storage medium, baseband chip, and device
Wenjie Chen, Shanghai (CN); and Chaowei Yi, Shanghai (CN)
Assigned to MORNINGCORE TECHNOLOGY CO., CHINA, (CN)
Appl. No. 17/769,634
Filed by MORNINGCORE TECHNOLOGY CO., CHINA, Shanghai (CN)
PCT Filed Nov. 5, 2019, PCT No. PCT/CN2019/115541
§ 371(c)(1), (2) Date Apr. 15, 2022,
PCT Pub. No. WO2021/072832, PCT Pub. Date Apr. 22, 2021.
Claims priority of application No. 201910989395.5 (CN), filed on Oct. 17, 2019.
Prior Publication US 2023/0231747 A1, Jul. 20, 2023
Int. Cl. H04K 1/10 (2006.01); H04L 25/02 (2006.01); H04L 25/03 (2006.01)
CPC H04L 25/03159 (2013.01) [H04L 25/022 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A channel flatness compensation method, applied to a transmitting link modulated by orthogonal frequency division multiplexing and comprising:
receiving an input vector of a current sub-carrier subjected to sub-carrier mapping processing, and determining current values of preset configuration parameters corresponding to the current sub-carrier;
querying a preset frequency domain compensation table according to the current values of the preset configuration parameters, and determining a target compensation vector according to a query result; and
determining an output vector of the current sub-carrier according to the input vector and the target compensation vector, wherein the output vector is used in an inverse fast Fourier transform operation;
wherein the preset configuration parameters comprise: a useful sub-carrier bandwidth range, a carrier frequency, and at least one of a frequency band or a bandwidth.