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为了提高通信系统的安全性,文章结合同时同频全双工技术研究了包含非可信中继、信息发送端和接收端的三节点通信系统模型,提出了一种基于接收端协作干扰的安全通信策略(UFDR-IJ)。通过将传输信道模型建立为平坦瑞利衰落信道,得出了该条件下系统安全中断概率的近似表达式。通过仿真,证明了理论分析的正确性,而且相较于传统半双工模式协作干扰方法,文章所提的安全策略能够显著提高系统的安全性能。
In order to improve the security of the communication system, a three-node communication system model with untrusted relay, sender and receiver is studied based on simultaneous full-duplex full duplex technology. A secure communication based on receiver cooperative interference is proposed. Strategy (UFDR-IJ). By establishing the transmission channel model as a flat Rayleigh fading channel, the approximate expression of the system safety interruption probability under this condition is obtained. Through simulation, the correctness of theoretical analysis is proved. Compared with the traditional half-duplex cooperative interference method, the security strategy proposed in this paper can significantly improve the system’s security performance.