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为了提高无线通信系统的安全性能以及系统的能量和频谱资源利用效率,文章研究了一个包含信息发送端、接收端和具备能量采集能力窃听节点的无线网络通信系统,其中进行协作干扰的接收端工作在全双工模式。通过将系统信道建立为平坦瑞利衰落信道,对系统的安全性能进行分析,经过推导得出了系统安全中断概率的理论表达式。最后通过仿真对理论分析结果进行验证,并分析了不同参数对系统安全性能的影响。结果表明相较于传统的窃听网络三节点模型,文章所提的物理层安全传输方法能够使系统获得更好的安全性能。
In order to improve the security performance of wireless communication system and the energy and spectral resource utilization efficiency of the system, a wireless network communication system including an information sender, a receiver and an eavesdropping node with energy harvesting capability is studied. In the receiver, In full duplex mode. By setting up the system channel as a flat Rayleigh fading channel, the security performance of the system is analyzed, and the theoretical expression of the system security interrupt probability is deduced. Finally, the theoretical analysis results are verified through simulation, and the influence of different parameters on the system safety performance is analyzed. The results show that compared with the traditional three-node model of wiretapping network, the physical layer security transfer method mentioned in this paper can make the system get better security.