AN 辅助的 WFRFT 抗截获通信优化设计
Anti-interception Communication Technology Based on WFRFT and Artificial Noise
Received date: 2018-03-10
Online published: 2025-05-29
翟东 , 达新宇 , 王浩波 , 潘钰 . AN 辅助的 WFRFT 抗截获通信优化设计[J]. 弹箭与制导学报, 2018 , 38(6) : 27 -32 . DOI: 10.15892/j.cnki.djzdxb.2018.06.007
This paper proposes a new kind of anti-interception communication technology based on weighted-type fractional Fourier transform (WFRFT) and artificial noise (AN). By selecting the appropriate power ratio, the performance degradation of legal receiver is less than 1 dB. Based on this, the influence of modulation order on the BER performance and security capacity of the system is analyzed and the selection of the modulation order of WFRFT is optimized. Selecting the appropriate modulation order, on the condition that the eavesdropper knows the specific value of the modulation order, when the SNR is 15 dB the error rate of the eavesdropper is 0. 002 4 and the system's security capacity is 5.717 (bit • s-1)/Hz when the SNR is 20 dB. The system's anti-interception has been greatly improved.
Key words： satellite communication; WFRFT; artificial noise; anti-interception; optimal design
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