Cooperative jamming AF networks via Nakagami-m fading channels

In this paper, we highlight a secure reactive amplify-and-forward relaying system over Nakagami-m fading channels in the presence of multiple eavesdroppers. We study a destination-assisted jamming scheme to strengthen the wireless security against any malicious attack. We define a reactive selection where the cooperating node is chosen according to the maximum instantaneous signal-to-noise ratio of the second hop. We provide, as well, an optimal power allocation and an approximate analysis for the ergodic secrecy capacity. A selection of simulation results is illustrated to confirm the accuracy of the proposed theoretical analysis.