Safeguarding massive MIMO aided hetnets using physical layer security
Safeguarding massive MIMO aided hetnets using physical layer security
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DOI：
10.1109/wcsp.2015.7341120
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发表时间：
2015-09
期刊：
影响因子：
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通讯作者：
Yansha Deng;Lifeng Wang;Kai‐Kit Wong;A. Nallanathan;M. Elkashlan;S. Lambotharan
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文献类型：
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作者：
Yansha Deng;Lifeng Wang;Kai‐Kit Wong;A. Nallanathan;M. Elkashlan;S. Lambotharan
本文探讨了大规模多输入多输出（MIMO）辅助的两层异构网络（HetNets）的物理层安全的潜力。重点研究了存在多个窃听者的下行链路安全传输问题。我们首先解决的影响，大规模MIMO的最大接收功率为基础的用户关联。然后，我们推导出一个HetNets用户的保密中断概率的易处理的上限表达式。我们表明，大规模MIMO的实现显着提高了保密性能，这表明物理层安全可能是一个很有前途的解决方案，以保护大规模MIMO HetNet。此外，我们表明，HetNets用户的保密中断概率首先下降，然后提高PBS的密度。
This paper exploits the potential of physical layer security in massive multiple-input multiple-output (MIMO) aided two-tier heterogeneous networks (HetNets). We focus on the downlink secure transmission in the presence of multiple eavesdroppers. We first address the impact of massive MIMO on the maximum receive power based user association. We then derive the tractable upper bound expressions for the secrecy outage probability of a HetNets user. We show that the implementation of massive MIMO significantly improves the secrecy performance, which indicates that physical layer security could be a promising solution for safeguarding massive MIMO HetNets. Furthermore, we show that the secrecy outage probability of HetNets user first degrades and then improves with increasing the density of PBSs.