多跳译码转发中继网络保密中断概率分析

Secrecy Outage Probability Analysis of Multi-Hop Decode-and-Forward Relay Networks

针对无线中继网络面临的安全问题,提出了一个具有多天线窃听节点的多跳译码转发中继网络,推导了在Rayleigh衰落信道下网络的保密中断概率,并分析了窃听节点的位置和天线数目以及网络跳数和端到端信道容量对保密中断概率的影响。研究结果表明:合理设置网络跳数和端到端信道容量将有助于降低多跳译码转发中继网络被成功窃听的概率。

Aiming at the security problem of wireless relay network,a multi-hop decode-and-forward(DF)relay networks with a multiple antennas eavesdropper node is proposed,and secrecy outage probability is derived with Rayleigh fading channel,and the effect of eavesdropper node’s location and antenna number and network’s hop number and end-to-end channel capacity on secrecy outage probability is analyzed.The result of research shows that reasonable setting of network hop number and end-to-end channel capacity contribute to reduce the probability of successful eavesdropping in DF multi-hop relay networks.