On Physical Layer Security of Two Way Energy Harvesting Relays

Abstract

Energy harvesting relays are gathering significant research interest due to their applications in large-scale networks. This work focuses on the performance evaluation of two-way decode-and-forward (DF) relay with energy harvesting capability. More specifically, using relay activation threshold as power constraint, we determine the performance of two-way DF relay. The aggregated received power at relay is used to define power shortage event. We also derive a closed-form expression of intercept probability in the presence of cluster of eavesdroppers. Impact of power splitting factor and relay activation threshold on secrecy performance of two-way DF relay has also been assessed. Extensive simulations are performed in MATLAB to verify the derived analytical expressions.