双向中继网络多对大规模MIMO系统安全性研究
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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.
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.
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.
引文
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[6] PAN X,GUO L,DONG C,et al.Secure multi-pair massive MIMO two-way amplify-and-forward relay network with power allocation scheme [C]//2017 IEEE International Conference on Communications (ICC).Paris:IEEE,2017:1-5.
[2] CHEN J,CHEN H,ZHANG H,et al.Spectral-energy efficiency tradeoff in relay-aided massive MIMO cellular networks with pilot contamination [J].IEEE Access,2016,4:5234-5242.
[3] WANG C L,CHEN J Y,PENG Y H.Relay precoder designs for two-way amplify-and-forward MIMO relay systems:an eigenmode-selection approach [J].IEEE Transactions on Wireless Communications,2016,15(7):5127-5137.
[4] JIN S,LIANG X,WONG K K,et al.Ergodic rate analysis for multipair massive MIMO two-way relay networks [J].IEEE Transactions on Wireless Communications,2015,14(3):1480-1491.
[5] YANG N,WANG L,GERACI G,et al.Safeguarding 5G wireless communication networks using physical layer security [J].IEEE Communications Magazine,2015,53(4):20-27.
[6] PAN X,GUO L,DONG C,et al.Secure multi-pair massive MIMO two-way amplify-and-forward relay network with power allocation scheme [C]//2017 IEEE International Conference on Communications (ICC).Paris:IEEE,2017:1-5.