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首页> 外文期刊>IEEE systems journal >Improving Physical-Layer Security for Wireless Communication Systems Using Duality-Aware Two-Way Relay Cooperation
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Improving Physical-Layer Security for Wireless Communication Systems Using Duality-Aware Two-Way Relay Cooperation

机译：使用对偶感知的双向中继协作来提高无线通信系统的物理层安全性

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摘要

This paper focuses on how to effectively exploit the two-way relay cooperation for improving the system physical-layer security with the help of the achieved diversity gain. It has been shown that the users both play the roles of source and jammer during the two-way communication. Utilizing this duality of the users, a novel and distributed relay selection criterion is proposed to optimize the secrecy outage performance. Particularly, the proposed criterion can be implemented without any information of the eavesdroppers. The performance analysis of the secrecy outage probability is provided. A diversity order of K/2 is obtained, where K is the number of relays. Complexity analysis is then presented, which has verified that the complexity of the proposed criterion is much lower than that of the optimal one and is independent from the number of relays and eavesdroppers. Moreover, the impact of the node density on the secrecy performance is also presented, indicating an interesting insight that massive number of eavesdroppers has limited impact on the system secrecy performance. Numerical results demonstrate the effectiveness of our relay selection design.
机译：本文重点介绍如何在实现的分集增益的基础上，有效地利用双向中继协作来提高系统物理层的安全性。已经表明，在双向通信过程中，用户都扮演着信号源和干扰源的角色。利用用户的这种双重性，提出了一种新颖的分布式中继选择准则，以优化保密中断性能。特别地，可以在没有窃听者的任何信息的情况下实现所提出的标准。提供了保密中断概率的性能分析。获得分集阶数为K / 2，其中K为中继数。然后进行了复杂度分析，这证明了所提出标准的复杂度远低于最优标准，并且与中继和窃听者的数量无关。此外，还介绍了节点密度对保密性能的影响，这表明有趣的见解，即大量的窃听者对系统保密性能的影响有限。数值结果证明了我们的继电器选择设计的有效性。

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