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电子学报  2015 

物理层安全中的最优中继选择及协同干扰策略

DOI: 10.3969/j.issn.0372-2112.2015.04.023, PP. 791-794

Keywords: 物理层安全,中继选择,协同干扰,功率分配

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Abstract:

本文提出了一种以协同干扰为基础,结合了最优中继选择和功率分配的物理层安全方案.该方案针对分布式天线的场景,从中间节点中选择一个最佳的节点作为中继,剩余的其他节点作为协同干扰节点.中继节点使用放大转发策略.本文同时提出了协同干扰节点的波束成形算法.另外,我们还推导出了中继节点和协同干扰节点之间的功率分配的闭式解.最后,本文还给出了相关的仿真结果,证实了新提出的方案比传统方案能获得更高的安全容量.

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