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Volume 45 Issue 4
Apr.  2023
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YANG Yuxiao, GAO Ping. Design Method of Multi-layer Multi-Parameter Multi-term Weighted-type FRactional Fourier Transform Composite Modulation Communication Signal[J]. Journal of Electronics & Information Technology, 2023, 45(4): 1192-1200. doi: 10.11999/JEIT220266
Citation: YANG Yuxiao, GAO Ping. Design Method of Multi-layer Multi-Parameter Multi-term Weighted-type FRactional Fourier Transform Composite Modulation Communication Signal[J]. Journal of Electronics & Information Technology, 2023, 45(4): 1192-1200. doi: 10.11999/JEIT220266

Design Method of Multi-layer Multi-Parameter Multi-term Weighted-type FRactional Fourier Transform Composite Modulation Communication Signal

doi: 10.11999/JEIT220266
Funds:  The National Natural Science Foundation of China (61701226)
  • Received Date: 2022-03-14
  • Rev Recd Date: 2022-09-07
  • Available Online: 2022-09-16
  • Publish Date: 2023-04-10
  • In order to improve the safety performance of satellite communication signal, a multi-layer multi-parameter Multi-term Weighted-type FRactional Fourier Transform (MWFRFT) composite modulation communication signal design method is proposed in this paper. Considering the scanning threat of traditional term MWFRFT single-layer structure, MWFRFT is extended to multi-layer structure with different weighting coefficients, which reduces the scanned probability of the system. At the same time, the simulation of communication signal modulation characteristics under multi-layer structure is solved by optimizing the set of control parameters of multi-layer Multi-Parameter MWFRFT (MPMWFRFT) system. Considering the target parasitic signal and narrowband signal interference in complex electromagnetic environment scene, the multi-layer multi-parameter composite modulation system Three Layer Multinomial Weighted FRactional Fourier Transform and Direct Sequence Spread Spectrum (TL-MWFRFT-DSSS) are designed by introducing the spread spectrum mechanism. Simulation results show that this method realizes the simulation of modulation characteristics of multi-layer communication signals on the premise of ensuring good communication performance, and improves significantly the anti scanning performance of the system.
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