Energy harvesting in cooperative jamming networks in the presence of multiple Eavesdroppers.

Abstract

This thesis considers a dual-hop cooperative wireless network consisting of a base station, intermediate nodes equipped with energy harvesting circuitries, and a legitimate user, in the presence of a passive multiple eavesdroppers. The intermediate nodes harvest energy from the base station by using the time switching-based relaying protocol and use this harvested energy to transmit information to the legitimate user. During the transmission of information, the BS typically faces a risk of losing information due to malicious eavesdropping. Thus, to enhance the secrecy of the considered system, one of the intermediate nodes acts as a jammer, using harvested energy to generate interference with the eavesdroppers. Under these assumptions, system performance is evaluated in terms of PLS performance metrics for example Secrecy outage probability, Secrecy throughput and Asymptotic secrecy outage probability. We present exact numerical and asymptotic results to justify our analysis. It is seen that as the number of Eavesdroppers increases, the secrecy performance is deteriorated. Also, as the number of intermediate nodes increases, the secrecy performance is improved with increasing SNR. Lastly, conclusion and future recommendations are provided to assist in the succeeding research prospects.