On Outage Secrecy Minimization using Jammer Selection in Energy Harvesting Cognitive Radio

摘要: This work considers a cognitive radio network (CRN) model that consists of secondary transmitter-receiver pair and operates in an underlay mode on two non-overlapping time slots presence eavesdropper ( $E_{av}$ ) multiple cooperative jammers. In the first slot, transmitter $SU_{\mathcal{T}}$ jammers harvest energy from interference signal primary user (PU). During remaining transmits its data to receiver maintaining target threshold $PU_{\mathcal{R}}$ ). The jammer with minimum signal-to-interference ratio at is selected countermeasure eavesdropping. Closed form expressions for total power budget, optimal fraction used by slot harvesting are derived minimize secrecy outage probability under constraints probability, causality both Simulation results show value ∼ 18.69% less proposed method compared existing work.