Secrecy outage on transmit antenna selection/maximal ratio combining in MIMO cognitive radio networks

2015 International Conference on Wireless Communications & Signal Processing (WCSP) Pub Date : 2016-02-12 DOI:10.1109/TVT.2016.2529704

Hui Zhao, Youyu Tan, Gaofeng Pan, Yunfei Chen, Nan Yang

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引用次数: 53

Abstract

This paper investigates the secrecy outage performance of transmit antenna selection (TAS)/maximal ratio combining (MRC) in multiple input multiple output (MIMO) cognitive radio networks (CRNs) over Rayleigh fading channels. In the considered system, a secondary user (SU-TX) equipped with NA (NA ≥ 1) antennas uses TAS to transmit confidential messages to another secondary user (SU-RX), which is equipped with NB (NB ≥ 1) antennas and adopts MRC scheme to process multiple received signals. Meanwhile, an eavesdropper equipped with NE (NE ≥ 1) antennas also adopts MRC scheme to overhear the transmitted information between SU-TX and SU-RX. SU-TX adopts the underlay strategy to guarantee the quality of service of the primary user without spectrum sensing. In this paper, we derive the closed-form expression for the secrecy outage probability (SOP) and propose a simplified SOP when the maximum transmit power at SU-TX is always sufficiently high. Finally, simulations are conducted to validate the accuracy of our proposed analytical models.

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MIMO认知无线网络中发射天线选择/最大比组合的保密中断

研究了多输入多输出(MIMO)认知无线网络(crn)在瑞利衰落信道下的发射天线选择(TAS)/最大比组合(MRC)的保密中断性能。在考虑的系统中，配备NA (NA≥1)天线的从用户SU-TX使用TAS向另一个配备NB (NB≥1)天线的从用户SU-RX发送机密消息，SU-RX采用MRC方案处理接收到的多个信号。同时，配备网元(网元≥1)天线的窃听器也采用MRC方案，窃听SU-TX与SU-RX之间的传输信息。SU-TX采用底层策略，保证主用户的服务质量，无需频谱感知。本文导出了保密中断概率(SOP)的封闭表达式，并提出了SU-TX最大发射功率总是足够高时的简化SOP。最后，通过仿真验证了所提分析模型的准确性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2015 International Conference on Wireless Communications & Signal Processing (WCSP)

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