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| 双向中继网络多对大规模MIMO系统安全性研究 |
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冯伟1, 李敏1, 程育昊1, 方国杏1, 贾楠楠1, 彭张节1,2
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1.上海师范大学 信息与机电工程学院, 上海 200234;2.东南大学 信息科学与工程学院 移动通信国家重点实验室, 江苏 南京 211189
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| 摘要: |
| 在配备有大量天线的多对大规模多输入多输出（MIMO）系统中，研究了多个用户通过双向中继网络交换消息的安全问题.首先，推导出用户的安全容量表达式；然后，通过分析结果，讨论信道容量、天线数和用户对数之间的数学关系，得出系统安全容量的近似表达式.仿真结果表明：当中继的传输功率和用户发射功率远远大于噪声功率时，安全容量与天线数量成正比，与干扰用户对数成反比. |
| 关键词: 大规模多输入多输出(MIMO)系统 双向中继 安全容量 |
| DOI：10.3969/J.ISSN.1000-5137.2019.01.008 |
| 分类号: |
| 基金项目:国家自然科学基金（61701307）；东南大学信息科学与工程学院移动通信国家重点实验室开放研究基金（2018D14） |
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| Research on the security of multiple pairs of massive MIMO system in two-way relay networks |
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FENG Wei1, LI Min1, CHENG Yuhao1, FANG Guoxing1, JIA Nannan1, PENG Zhangjie1,2
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1.College of Information, Mechanical and Electrical Engineering, Shanghai Normal University, Shanghai 200234, China;2.National Mobile Communications Research Laboratory, School of Information Science and Engineering, Southeast University, Nanjing 211189, Jiangsu, China
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| Abstract: |
| In multiple pairs of massive multiple input multiple output (MIMO) system equipped with a large number of antennas,this paper considered the security issues of two-way relay networks where multiple users exchange messages.Firstly,the user's safety capacity expression was derived.Then,according to the analysis results,the mathematical relationship among the channel capacity,the number of antennas and the pair of users are discussed.Lastly,an approximate expression of the system safety capacity was obtained.Simulation results showed that when the transmission power of the relay and the user emission power were much greater than the noise power,the safety capacity was proportional to the number of antennas while inversely proportional to the pair of interference users. |
| Key words: massive multiple input multiple output (MIMO) system two-way relay secure capacity |
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