[1]陈璇,冯友宏. 安全中断概率约束下MISOME系统安全性能分析[J].计算机技术与发展,2017,27(02):76-80.
　CHEN Xuan,FENG You-hong. nalysis of Security Performance of MISOME System with Security Outage Probability Constraints[J].,2017,27(02):76-80.
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 安全中断概率约束下MISOME系统安全性能分析()
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《计算机技术与发展》[ISSN:1006-6977/CN:61-1281/TN]

卷:
27
期数:
2017年02期
页码:
76-80
栏目:
安全与防范
出版日期:
2017-02-10

文章信息/Info

Title:
 nalysis of Security Performance of MISOME System with Security Outage Probability Constraints
文章编号:
1673-629X（2017)02-0076-05
作者:
 陈璇; 冯友宏
 南京邮电大学 通信与信息工程学院
Author(s):
 CHEN Xuan; FENG You-hong
关键词:
 ; 物理层安全; 有效安全吞吐量; 天线选择; 波束成形; 人工噪声技术
Keywords:
 ; physical layer security ; effective security throughput; transmit antenna selection; beamforming; artificial noise
分类号:
TN918
文献标志码:
A
摘要:
 针对MISOME系统安全性能问题,考虑发送端硬件条件受限的情况,提出一种利用发端天线选择(TAS)、发端波束成形(TBF)以及安全速率自适应方法的传输方案(TASTBF-adaptive).安全中断概率(SoP)和有效安全吞吐量(EST)是衡量MISOME系统安全性能的两个重要指标.通过在安全中断概率约束下比较所提方案与传统人工噪声的物理层安全传输方法(AN-adaptive)的EST,分析两系统安全性能和研究影响安全性能的因素.仿真结果表明,在允许的最大SOP减小时,AN-adaptive方法比TASTBF-adaptive方法的安全性和鲁棒性更好;提高AN-adaptive方案安全性能应主要通过增大发送天线数和主信道平均信噪比,而提高TASTBF-adaptive方案安全性能应主要通过减小窃听天线数和窃听信道平均信噪比;TASTBF-adaptive方法中TAS选择多根天线比只选择一根天线安全性能更好.
Abstract:
 Regarding the security performance of MISOME system,a transmission scheme adopting Transmit Antenna Selection (TAS),Transmit Beamforming (TBF) is proposed as TASTBF-adaptive under the condition of limited hardware at transmitter.As Security Outage Probability (SOP) and Effective Security Throughput (EST) are two principal indicators in MISOME system,the proposed scheme is compared with traditional scheme (AN-adaptive) based on artificial noise technique under the constraint of SOP in order to analyze the security performance and its influence of the two schemes.Numerical results indicate that as the maximum allowed SOP decreases,TASTBF adaptive scheme shows a lower resilience than AN adaptive scheme.The improvement of security performance presents a strong sensitivity to the increase of transmit antennas and the average SNR of main channel in AN adaptive scheme while that in TASTBF adaptive scheme presents a profound sensitivity over the decrease of antennas at eavesdropper and the average SNR of eavesdropper channel.TAS provides better security performance of TASTBF adaptive scheme when using more transmit antennas than just one.

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更新日期/Last Update: 2017-05-11