Futiling eavesdropping in harvested energy powered cognitive radio networks under secrecy constraints and multi slot spectrum sensing schedule

In this paper, we study optimal spectrum sensing schedule and optimal amount of transmission energy for harvested energy powered cognitive radio networks (CRN). We consider a scenario where cognitive users (CUs) exchange secrete messages in the presence of multiple movable eavesdroppers. The location set of eavesdroppers is modeled by Homogenous Poison Point Process (HPPP). To satisfy the instantaneous interference constraint with primary network, CU transmitters have adaptive power antennas. At the beginning of each time slot, CU transmitter decides to become active to sense channel or remain inactive to transmit if channel is vacant or not, on the basis of remaining energy in battery and expected secrecy transmission rate (ESTR). The purpose of this manuscript is to get future base reward for secrecy transmission rate of CRNs.