Physical layer security of underlay cognitive radio using maximal ratio combining#

Hui ZHAO; Dan-yang WANG; Chao-qing TANG; Ya-ping LIU; Gao-feng PAN; Ting-ting LI; Yun-fei CHEN

doi:10.1631/FITEE.1500351

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Physical layer security of underlay cognitive radio using maximal ratio combining#

Regular Papers | Updated：2022-05-19

- Physical layer security of underlay cognitive radio using maximal ratio combining#
- 基于最大比合并的认知无线电物理层保密性能分析
- Frontiers of Information Technology & Electronic Engineering Vol. 17, Issue 9, Pages: 929-937(2016)
- Affiliations：
  
  1School of Electronic and Information Engineering, Southwest University, Chongqing 400715, China
  2School of Electrical & Electronic Engineering, Newcastle University, Newcastle upon Tyne NE1 7RU, UK
  3School of Mathematics and Statistics, Southwest University, Chongqing 400715, China
  4School of Engineering, University of Warwick, Coventry CV4 7AL, UK
- Author bio：
  
  E-mail:gfpan@swu.edu.cn
- Funds：
- DOI：10.1631/FITEE.1500351
  CLC： TN929.5
- Received：21 October 2015，
  
  Accepted：16 February 2016，
  
  Published：2016-09
- Accepted：
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Hui ZHAO, Dan-yang WANG, Chao-qing TANG, et al. Physical layer security of underlay cognitive radio using maximal ratio combining#[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(9): 929-937.
DOI：

Hui ZHAO, Dan-yang WANG, Chao-qing TANG, et al. Physical layer security of underlay cognitive radio using maximal ratio combining#[J]. Frontiers of Information Technology & Electronic Engineering, 2016, 17(9): 929-937. DOI： 10.1631/FITEE.1500351.

摘要

在瑞利衰落信道下，本文研究了认知无线电网络中最大比合并的保密中断性能。在一个单输入多输出窃密系统中，本文考虑一个次级用户向另一个装备多根接收天线并且采用最大比合并提高其合并信噪比的次级用户发送保密信息。与此同时，一个装备多根接收天线也采用最大比合并的窃密者窃听这对合法次级用户的信息。合法次级发送者采用Underlay策略与主用户共享频谱资源的同时亦不影响主用户的通信质量。考虑上述的窃密环境，本文分别得到了精确和近似保密中断概率的闭式表达式。

Abstract

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

(

≥ 1) antennas where the MRC technique is adopted to improve its received signal-to-noise ratio. Meanwhile

an eavesdropper equipped with

(

≥ 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.

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references

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