Secrecy Performance Evaluation of a Buffer-Aided Cognitive Relay Network over Rayleigh Fading Channels

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NASERI MOHSEN; Saber Mohammad Javad; Sadough Seyed Mohammad Sajad; TORABI MOHAMMAD

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Journal: JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS Year:2020 | Volume:16 | Issue:4 Page(s): 113-121

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Title

Secrecy Performance Evaluation of a Buffer-Aided Cognitive Relay Network over Rayleigh Fading Channels

Author(s)

NASERI MOHSEN | Saber Mohammad Javad | Sadough Seyed Mohammad Sajad | TORABI MOHAMMAD | Issue Writer Certificate

Keywords

Cognitive Radio NetworksQ1

PHY SecurityQ1

Relay NetworksQ1

Buffer-Aided RelayQ1

Secrecy Outage ProbabilityQ1

Rayleigh FadingQ1

Abstract

In this paper, we investigate the physical layer security performance of a buffer-aided cognitive relay network over Rayleigh Fading channels, where an underlay cognitive radio system is employed. In this network, a cognitive transmitter communicates with a cognitive receiver through a Buffer-Aided Relay, in the presence of an eavesdropper overhearing the transmitted information. To evaluate the secrecy performance of the system, Secrecy Outage Probability (SOP) has been used as a popular performance metric, where a closed-form expression is obtained. Numerical results obtained from the derived SOP expression, along with the Monte-Carlo simulation results are provided to evaluate the secrecy performance of the system under different system parameters. In addition, the secrecy performance of the system without buffer is evaluated and compared with that of the buffer-aided system. Assuming that the delay caused by buffer is negligible, it is shown that increasing the buffer size from L=2 to L=20 leads to a decrease in SOP from 10-2 to 10-3, indicating a performance improvement in the order of about 10. Moreover, Buffer-Aided Relay system achieves 3 dB SNR gain compared to the performance of the system without buffer, at the SOP of 10-3.

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APA: Copy

NASERI, MOHSEN, Saber, Mohammad Javad, Sadough, Seyed Mohammad Sajad, & TORABI, MOHAMMAD. (2020). Secrecy Performance Evaluation of a Buffer-Aided Cognitive Relay Network over Rayleigh Fading Channels. JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS, 16(4 ), 113-121. SID. https://sid.ir/paper/115661/en

Vancouver: Copy

NASERI MOHSEN, Saber Mohammad Javad, Sadough Seyed Mohammad Sajad, TORABI MOHAMMAD. Secrecy Performance Evaluation of a Buffer-Aided Cognitive Relay Network over Rayleigh Fading Channels. JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS[Internet]. 2020;16(4 ):113-121. Available from: https://sid.ir/paper/115661/en

IEEE: Copy

MOHSEN NASERI, Mohammad Javad Saber, Seyed Mohammad Sajad Sadough, and MOHAMMAD TORABI, “Secrecy Performance Evaluation of a Buffer-Aided Cognitive Relay Network over Rayleigh Fading Channels,” JOURNAL OF IRANIAN ASSOCIATION OF ELECTRICAL AND ELECTRONICS ENGINEERS, vol. 16, no. 4 , pp. 113–121, 2020, [Online]. Available: https://sid.ir/paper/115661/en

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