Open Access

ARTICLE

Secrecy Outage Probability Analysis Based on Cognitive Decodeand-Forward Relaying

Ruoyu Su^{1, 4}, Xiaojun Sun^{1, 3}, Fei Ding^{1, 2, *}, Dengyin Zhang^{1, 2}, Hongbo Zhu^{1, 2}, M. I. M. Wahab⁵

1 Jiangsu Key Laboratory of Wireless Communications, Nanjing University of Posts and Tele- Communications, Nanjing, 210003, China.
2 Key Laboratory of Broadband Wireless Communication and Sensor Network Technology, Ministry of Education, Nanjing University of Posts and Telecommunications, Nanjing, 210003, China.
3 School of Information Science and Engineering, Southeast University, Nanjing, 210018, China.
4 Department of Electrical and Computer Engineering, Faculty of Engineering and Applied Science, Memorial University of Newfoundland, St. John’s, A1B 3X5, Canada.
5 Department of Mechanical and Industrial Engineering, Ryerson University, Toronto M5B 2K3, Canada.

* Corresponding Author: Fei Ding. Email: .

Computers, Materials & Continua 2020, 62(3), 1387-1395. https://doi.org/10.32604/cmc.2020.06864

Abstract

Wireless communications have to face to several different security issues in practice due to the nature of broadcast. The information theory is well known to provide efficient approaches to address security issues in wireless communications, which attracts much attention in both industry and academia in recent years. In this paper, inspired by information theory, we study the outage probability of the opportunistic relay selection based on cognitive decode-and-forward relaying with the secrecy consideration. Specifically, the closed-form expression of the outage probability is proposed. Moreover, the asymptotic performance evaluation on the basis of the analytical results is investigated. The simulation results show that the relay selection can reduce the outage probability in accordance with our theoretical analysis.

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Keywords

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