Secrecy analysis in D2D-enabled cellular networks against spatially random eavesdroppers

In this paper, we investigate both the reliable and secure transmission for device-to-device (D2D) communications underlaying cellular networks where eavesdroppers are according to the Poisson point process (PPP) distribution. The transmission secrecy outage probability (TSOP) is proposed to comprehensively characterize the joint performance of the reliability and the security. Firstly their connection outage probabilities (COPs) and secrecy outage probabilities (SOPs) are derived in the non-colluding eavesdroppers case. Then, their corresponding TSOPs are presented. We further discuss the impact of various factors on their reliable and secure transmission performances, such as the node intensity, the target threshold and the large-scale path loss.