Transmit-Receive Diversity for Secure Connectivity in MIMO Stochastic Networks

In the paper, we study the problem of secure connectivity in general Multiple input and Multiple output (MIMO) stochastic networks, where legitimate users and eavesdroppers are equipped with multi antennas, and designed to distribute on a two- dimensional plane according to two independent Poisson point process(PPP)s. The non-colluding and colluding eavesdroppers scenarios are considered. Transmit-receive diversity (TRD) is explored to derive a closed-form expression of the upper bound of secrecy connection probability. For colluding eavesdroppers, we consider the worst cases where the received signals of eavesdroppers are Nakagami-m distributed with integer parameter m. Compared with MISO system, our analysis and simulation shows that a significant improvement of secrecy connection probability can be received by performing TRD in MIMO system.