Secrecy Performance of Cognitive Radio Sensor Networks with an Energy-Harvesting based Eavesdropper and Imperfect CSI

Tan, Rongjun; Gao, Yuan; He, Haibo; Cao, Yuan

doi:10.1109/asianhost.2018.8607164

Cited by 5 publications

(1 citation statement)

References 20 publications

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“…Previous Works. While most recent publications focused on securing direct transmission (i.e., without relaying [17][18][19][20][21][22][23]) and relaying transmission (i.e., without relay selection [24][25][26][27][28]) in cognitive radio networks with energy harvesting (CRNwEH) by the physical layer security technique (e.g., [29][30][31][32][33]), to the best of our understanding only three works in [34][35][36] mentioned the relay selection in these networks. To be specific, [34] studied the security capability of the conventional reactive relay selection in CRNwEH in terms of the secrecy outage probability (SOP) through Monte-Carlo simulations under the (peak transmission and interference) power constraints.…”

Section: Introductionmentioning

confidence: 99%

Relay Selection for Security Improvement in Cognitive Radio Networks with Energy Harvesting

Ho-Van

Do-Dac

2021

Wireless Communications and Mobile Computing

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This paper selects an unlicensed relay among available self-powered relays to not only remain but also secure information transmission from an unlicensed source to an unlicensed destination. The relays harvest energy in signals of the unlicensed source and the licensed transmitter. Then, they spend the harvested energy for their relaying operation. Conditioned on the licensed outage restriction, the peak transmission power restriction, Rayleigh fading, and the licensed interference, the current paper proposes an exact closed-form formula of the secrecy outage probability to quickly evaluate the secrecy performance of the proposed relay selection method in cognitive radio networks with energy harvesting. The proposed formula is corroborated by computer simulations. Several results illustrate the effectiveness of the relay selection in securing information transmission. Additionally, the security capability is saturated at large peak transmission powers or large preset outage probabilities of licensed users. Furthermore, the security capability depends on many specifications among which the power splitting ratio, the relays’ positions, and the time switching ratio can be optimally selected to obtain the best security performance.

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