Security analysis in multicast networks over generalized gamma fading channels operating dual-branch diversity receiver

In this paper, a single input multiple output (SIMO) multicasting network scheme is proposed over generalized gamma fading channels with dual-branch diversity receivers in the presence of multiple eavesdroppers. The main goal of this paper is to analyze the effects of shaping parameters ω and β with a number of θ receivers and ϕ eavesdroppers on the secrecy performance of the proposed scheme. The closed-form analytical expressions of the probability of non-zero secrecy multicast capacity (PNZSMC) and the secure outage probability for multicasting (SOPM) have been derived and verified via the monte carlo simulation. Our results revealed that the secrecy performance degrades with increasing in the shaping parameters related to eavesdropper and upgrades with increasing in the main channel shaping parameter. Secrecy performance is also greatly affected by the number of receivers and eavesdroppers. Increasing in the number of receivers and eavesdroppers, the secrecy performance degrades.