Secure Resource Allocation for Cooperative Cognitive Radio Networks With Dedicated Energy Sources
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abstract
2018 IEEE. This paper studies the secure resource allocation for an energy harvesting (EH) based cooperative cognitive radio networks (CRN), which consists of one primary user (PU), multiple secondary users (SUs), one dedicated energy source (ES), and one malicious eavesdropper. In the network, the ES not only can wirelessly power all SUs in addition to the PU, but also can relay data for the PU and send jamming signals to the eavesdropper for the PU and SUs. Specifically, the ES is employed to transmit wireless power to all SUs while simultaneously receiving the PU's information signals by operating in full duplex mode in the first transmission phase, forward the PU's data together with SUs and send jamming signals for the PU in the second transmission phase, and then transmit jamming signals to the eavesdropper for all SUs in the third transmission phase. The ES is paid by the PU and all SUs as an incentive to support wireless power transfer and wireless information transmission. We consider the joint power allocation, data transmission time allocation, and power splitting ratio selection for the considered system, with the objective to minimize the total system payment made to the ES, while concurrently guaranteeing the PU's and all SUs' secure quality-of-service (QoS) requirements. We consider both the cases with perfect and imperfect self- interference cancellation (SIC) between the ES's transmitting antenna and receiving antenna. Finally, we validate and verify the performance of the proposed resource allocation algorithms through numerical analyses.
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2018 IEEE International Conference on Communications (ICC)
