Abstract
This work considers a cognitive radio (CR) system model containing a set of transmit-receive node pairs, one fusion center (FC), one primary user emulation attack (PUEA) node, an eavesdropper node (Eav) and a set of jammers. The CR operation is governed by repetitive time frame wherein at the initial time slot, simultaneous energy harvesting (EH) and spectrum sensing (SS) are done through power splitting (PS) mode. Based on SS decision at the FC, CR transmitters and jammers either perform EH from primary user (PU) signal over the remaining slot or make an opportunistic data transmission. The sum secondary throughput is maximized under the constraints of SS reliability, energy causality of SU node and friendly jammer, interference at PU receiver, individual secondary and secrecy outage probability. Simulation results show $\sim$ 4.5% and $\sim$ 14.79% gain in sum secondary throughput and residual energy, respectively.
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