Enhancing the Security of Chaotic Direct Sequence Spread Spectrum Communication Through WFRFT

被引：22

作者：

Yuan, Guogang ^{[1
]}

Chen, Zili ^{[1
]}

Gao, Xijun ^{[1
]}

Zhang, Yun ^{[1
]}

机构：

[1] Army Engn Univ PLA, Dept UAV Engn, Shijiazhuang Campus, Shijiazhuang 050003, Hebei, Peoples R China

来源：

IEEE COMMUNICATIONS LETTERS | 2021年 / 25卷 / 09期

关键词：

Chaotic communication; Synchronization; Correlation; Receivers; Trajectory; Statistical distributions; Security; Chaotic direct sequence spread spectrum (CD3S); weighted fractional Fourier transform (WFRFT); security; statistical distribution; phase space trajectory;

D O I：

10.1109/LCOMM.2021.3096388

中图分类号：

TN [电子技术、通信技术];

学科分类号：

0809 ;

摘要：

In this letter, the weighted fractional Fourier transform (WFRFT) is performed on the chaotic sequence to enhance the security of the chaotic direct sequence spread spectrum (CD3S) communication, and a WFRFT-CD3S system that spreads the information bits through the WFRFT-chaotic sequence is proposed. In the proposed system, the transmitter scrambles the phase space trajectory of the chaotic sequence through WFRFT and make the distribution of the transmitted signal be Gaussian-like. The receiver synchronizes the WFRFT-chaotic sequence through bidirectional correlation search and demodulates the information through the synchronized local WFRFT-chaotic sequence. Simulations are implemented to evaluate the security performance, synchronization performance, and demodulation performance of the proposed system.

引用

页码：2834 / 2838

页数：5

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