Physical-layer secrecy outage of spectrum sharing CR systems over fading channels

Abstract

In this paper, we investigate the physical-layer secrecy outage performance of underlay spectrum sharing systems over Rayleigh and log-normal fading channels in the presence of one eavesdropper. In particular, the secondary transmitter sends data to the legitimate receiver under the constraints of the interference temperature at the primary receiver, while suffering the wiretap from the eavesdropper. Closed-form and approximated expressions are derived for the secrecy outage probability over Rayleigh and log-normal fading channels, respectively. The accuracy of our performance analysis is verified by simulation results.

摘要

中文摘要

在Underlay频谱共享系统中, 本文分别基于Rayleigh和log-normal衰落信道研究了存在一个窃密者时的物理层保密中断性能。当次级发送者在向次级接收者发送数据时, 不仅其发射功率受到主用户干扰功率容限的限制, 同时还要遭到窃密者的窃听。在Rayleigh和log-normal衰落信道下, 本文分别推导出了保密中断概率的准确和近似闭式表达式。最后, 通过了蒙特卡洛仿真验证了本文提出的性能分析模型。

创新点

本文首次研究了Underlay频谱共享系统分别在Rayleigh和log-normal衰落信道中的物理层保密中断性能, 并分别推导出了准确和近似闭式表达式。

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Correspondence to Gaofeng Pan.

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Liu, H., Zhao, H., Jiang, H. et al. Physical-layer secrecy outage of spectrum sharing CR systems over fading channels. Sci. China Inf. Sci. 59, 102308 (2016). https://doi.org/10.1007/s11432-015-5451-2

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Keywords

  • spectrum sharing
  • cognitive radio
  • secrecy outage probability
  • Rayleigh fading channels
  • log-normal fading channels

关键词

  • 频谱共享
  • 认知无线电
  • 保密中断概率
  • Rayleigh 衰落信道
  • log-normal 衰落信道