US 12,267,196 B1
Method for processing OFDM signal, system for transmitting OFDM signal, and device
Linhai Gu, Chongqing (CN); Guangnan Zou, Chongqing (CN); Xuesong Wang, Chongqing (CN); and Xiaolin Wu, Chongqing (CN)
Assigned to CHONGQING SATELITE NETWORK SYSTEM CO., LTD., Chongqing (CN)
Appl. No. 18/861,760
Filed by CHONGQING SATELITE NETWORK SYSTEM CO., LTD., Chongqing (CN)
PCT Filed Nov. 17, 2023, PCT No. PCT/CN2023/132249
§ 371(c)(1), (2) Date Oct. 30, 2024,
.
Int. Cl. H04L 27/26 (2006.01)
CPC H04L 27/2615 (2013.01) 18 Claims
OG exemplary drawing
 
1. A method for processing an orthogonal frequency division multiplexing (OFDM) signal, comprising:
determining a frequency of each of OFDM modulation symbols, wherein the OFDM modulation symbols are obtained by digitally modulating the OFDM signal;
determining, based on a frequency domain function and the frequency of the OFDM modulation symbol, a frequency domain function value corresponding to the frequency of the OFDM modulation symbol, wherein the frequency domain function is obtained by linearly combining a linear function with trigonometric functions having different frequencies;
determining, according to the frequency domain function value corresponding to each OFDM modulation symbol, an encoding matrix corresponding to the OFDM signal; and
processing the OFDM signal by the encoding matrix corresponding to the OFDM signal, to obtain a target OFDM signal conforming to a change rule of the frequency domain function.