Enhancing secrecy by full-duplex antenna selection in cognitive networks
Enhancing secrecy by full-duplex antenna selection in cognitive networks
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DOI：
10.1109/iscc.2017.8024584
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发表时间：
2017-07
期刊：
影响因子：
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通讯作者：
Gaojie Chen;J. Coon
中科院分区：
文献类型：
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作者：
Gaojie Chen;J. Coon
我们考虑支持全双工通信的辅助用户的底层认知网络。在这种情况下，我们提出在次要目的节点上应用天线选择来提高次要用户保密性能。研究了窃听信道的精确知识和平均知识情况下的天线选择规则。分析了二次窃听网络的保密中断概率，表明天线选择对二次窃听网络保密性能的改善主要是由于编码增益而不是分集增益。这与传统的数据传输天线选择有很大的不同，后者通常会导致更高的分集增益。通过数值仿真验证了所提方案的性能。
We consider an underlay cognitive network with secondary users that support full-duplex communication. In this context, we propose the application of antenna selection at the secondary destination node to improve the secondary user secrecy performance. Antenna selection rules for cases where exact and average knowledge of the eavesdropping channels are investigated. The secrecy outage probabilities for the secondary eavesdropping network are analyzed, and it is shown that the secrecy performance improvement due to antenna selection is due to coding gain rather than diversity gain. This is very different from classical antenna selection for data transmission, which usually leads to a higher diversity gain. Numerical simulations are included to verify the performance of the proposed scheme.