On secrecy performance of industrial Internet of things

Physical layer security has been shown to hold promise as a new paradigm for securing wireless links. This paper provides secrecy performance analysis for industrial Internet of things, where a set of industrial devices communicates in the presence of eavesdropper under a Weibull fading environment. We derive a closed-form expression for secrecy outage probability and evaluate the secrecy performance for the device selection scheme. This scheme is then compared with a benchmark technique, namely, a uniform selection scheme to quantify the performance improvements. In order to investigate the impact of Weibull shape parameter on secrecy performance, the derived expressions are used to perform a generalized diversity order analysis for both schemes. Finally, secrecy analysis conditioned on successful transmission of message is provided and analytical expression is derived. Extensive simulations are performed to validate the accuracy of the derived analytical expressions.