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Performance Study of Untrusted Relay Network Utilizing Cooperative Jammer | ||
| AUT Journal of Electrical Engineering | ||
| مقاله 4، دوره 48، شماره 2، بهمن 2016، صفحه 93-100 اصل مقاله (1.15 M) | ||
| نوع مقاله: Research Article | ||
| شناسه دیجیتال (DOI): 10.22060/eej.2016.820 | ||
| نویسندگان | ||
| Ali kuhestani1؛ Abbas Mohammadi* 2؛ Mohammad Javad Emadi3 | ||
| 1Ph.D. Student, Electrical Engineering Department, Amirkabir University of Technology | ||
| 2Professor, Electrical Engineering Department, Amirkabir University of Technology | ||
| 3Assistant Professor, Electrical Engineering Department, Amirkabir University of Technology | ||
| چکیده | ||
| Abstract—In this paper, the problem of secure transmission in two-hop amplify-and-forward (AF) systems with an untrusted relay is investigated. To prevent the untrusted relay from intercepting the source message and to achieve positive secrecy rate, the destination-based cooperative jamming (DBCJ) technique is used. In this method the destination sends an intended jamming signal to the relay. This jamming signal helps protecting the source message from being captured reliably at the untrusted relay, while the destination cancels itself intended jamming signal. The optimal power allocation (OPA) technique is considered for the presented system. It is observed that the objective function is a quasiconcave function at high signal-to-noise-ratio (SNR) regimes. Based on this OPA technique, we study the ergodic secrecy rate (ESR) and the secrecy outage probability (SOP) of the system when the source and relay are equipped with a single antenna while the destination is equipped with largescale antenna arrays (LSA). Using the achieved closed-form expressions, one can evaluate the performance of the secure system easily and fast and also, they provide significant insight for system design. Finally, simulation results indicate the accuracy of the derived expressions. | ||
| کلیدواژهها | ||
| Physical Layer Security؛ Optimal power allocation؛ Untrusted Relay؛ Destination-based cooperative jamming | ||
| عنوان مقاله [English] | ||
| Performance Study of Untrusted Relay Network Utilizing Cooperative Jammer | ||
| نویسندگان [English] | ||
| Ali kuhestani1؛ Abbas Mohammadi2؛ Mohammad Javad Emadi3 | ||
| 1Ph.D. Student, Electrical Engineering Department, Amirkabir University of Technology | ||
| 2Professor, Electrical Engineering Department, Amirkabir University of Technology | ||
| 3Assistant Professor, Electrical Engineering Department, Amirkabir University of Technology | ||
| چکیده [English] | ||
| Abstract—In this paper, the problem of secure transmission in two-hop amplify-and-forward (AF) systems with an untrusted relay is investigated. To prevent the untrusted relay from intercepting the source message and to achieve positive secrecy rate, the destination-based cooperative jamming (DBCJ) technique is used. In this method the destination sends an intended jamming signal to the relay. This jamming signal helps protecting the source message from being captured reliably at the untrusted relay, while the destination cancels itself intended jamming signal. The optimal power allocation (OPA) technique is considered for the presented system. It is observed that the objective function is a quasiconcave function at high signal-to-noise-ratio (SNR) regimes. Based on this OPA technique, we study the ergodic secrecy rate (ESR) and the secrecy outage probability (SOP) of the system when the source and relay are equipped with a single antenna while the destination is equipped with largescale antenna arrays (LSA). Using the achieved closed-form expressions, one can evaluate the performance of the secure system easily and fast and also, they provide significant insight for system design. Finally, simulation results indicate the accuracy of the derived expressions. | ||
| کلیدواژهها [English] | ||
| Physical Layer Security, Untrusted Relay, Optimal power allocation, Uplink Transmission | ||
| مراجع | ||
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[9] Wang, J.; Elkashlan, M.; Huang, J.; Tran, N. H. and Duong, T. Q.; “Secure Transmission with Optimal Power Allocation in Untrusted Relay Networks,” IEEE Wireless Commun. Lett., Vol. 3, No. 3, pp. 289– 292, 2014.
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[11] Anghel, P. A. and Kaveh, M.; “Exact Symbol Error Probability of a Cooperative Network in a Rayleigh-Fading Environment,” IEEE Trans. Wireless Commun., Vol. 3, No. 5, pp. 1416–1421, 2004.
[12] Papoulis, A.; “Probability, Random Variables, and Stochastic Processes,” McGraw-Hill, New York, 1984.
[13] Boyd, S. and Vandenberghe. L.; “Convex Optimization,” Cambridge University Press, 2004.
[14] Gradshteyn, I. S. and Ryzhik, I. M.; “Table of Integrals, Series and Products,” Academic, New York, 7th Edition, 2007. | ||
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