Physical layer security of underlay cognitive radio using maximal ratio combining

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• 作者：Hui Zhao ; Dan-yang Wang ; Chao-qing Tang…
• 关键词：Cognitive radio networks ; Maximal ratio combining ; Secrecy outage probability ; Single ; input multiple ; output
• 刊名：Frontiers of Information Technology & Electronic Engineering
• 出版年：2016
• 出版时间：September 2016
• 年：2016
• 卷：17
• 期：9
• 页码：929-937
• 全文大小：393 KB
• 刊物类别：Computer Science, general; Electrical Engineering; Computer Hardware; Computer Systems Organization
• 刊物主题：Computer Science, general; Electrical Engineering; Computer Hardware; Computer Systems Organization and Communication Networks; Electronics and Microelectronics, Instrumentation; Communications Engine
• 出版者：Zhejiang University Press
• ISSN：2095-9230
• 卷排序：17

文摘

We investigate the secrecy outage performance of maximal ratio combining (MRC) in cognitive radio networks over Rayleigh fading channels. In a single-input multiple-output wiretap system, we consider a secondary user (SU-TX) that transmits confidential messages to another secondary user (SU-RX) equipped with M (M ≥ 1) antennas where the MRC technique is adopted to improve its received signal-to-noise ratio. Meanwhile, an eavesdropper equipped with N (N ≥ 1) antennas adopts the MRC scheme to overhear the information between SU-TX and SU-RX. SU-TX adopts the underlay strategy to guarantee the service quality of the primary user without spectrum sensing. We derive the closed-form expressions for an exact and asymptotic secrecy outage probability.