Enhancing Physical Layer Security Using Underlay Full-Duplex Relay-Aided D2D Communications

Majid H. Khoshafa, T. Ngatched, M. Ahmed, Ahmed Ibrahim
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引用次数: 4

Abstract

This paper investigates physical layer security and data transmission in cellular networks with inband underlay Device-to-Device (D2D) communication, where there is no direct links between D2D users. We propose the use of full-duplex (FD) transmission and dual antenna selection at the relay node. Thanks to the FD transmission, the relay node can simultaneously act as a jammer to enhance the cellular network secrecy performance, while improving the D2D communication data transmission. This describes a practical attractive scheme, where spectrum sharing is beneficial for both the D2D and cellular networks in terms of throughput enhancement and security provisioning, respectively. We analyze the secrecy performance of the cellular network and derive closed-form expressions for the secrecy outage probability (SOP) and the probability of non-zero secrecy capacity. We also derive a closed-form expression of the D2D outage probability. Furthermore, asymptotic analysis for SOP is performed. Simulation and numerical results are provided to verify the efficiency of the proposed scheme and to validate the accuracy of the derived expressions.
使用底层全双工中继辅助D2D通信增强物理层安全性
本文研究了具有带内底层设备到设备(D2D)通信的蜂窝网络中的物理层安全和数据传输,其中D2D用户之间没有直接链接。我们建议在中继节点上使用全双工(FD)传输和双天线选择。由于采用FD传输,中继节点可以同时充当干扰器,增强蜂窝网络的保密性能,同时提高D2D通信数据的传输。这描述了一个实用的有吸引力的方案,其中频谱共享对D2D和蜂窝网络分别在吞吐量增强和安全供应方面都是有益的。分析了蜂窝网络的保密性能,导出了保密中断概率(SOP)和非零保密容量概率的封闭表达式。我们还推导了D2D中断概率的封闭表达式。进一步,对SOP进行了渐近分析。仿真和数值结果验证了所提方案的有效性,并验证了所推导表达式的准确性。
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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