部分信道状态信息下抗窃听协作中继传输方案  

Eavesdropping-resistant cooperative relay transmission scheme with partial channel state information

作　　者：雷维嘉[1] 左莉杰 谢显中[1] 

机构地区：[1]重庆邮电大学移动通信技术重庆市重点实验室,重庆400065

出　　处：《吉林大学学报（工学版）》2015年第5期1658-1664,共7页Journal of Jilin University:Engineering and Technology Edition

基　　金：国家自然科学基金项目(61471076;61271259;61301123);长江学者和创新团队发展计划项目(IRT1299);重庆市科委重点实验室专项项目

摘　　要：给出一种在缺少窃听节点信道信息、存在直接链路的情况下基于放大转发的中继波束赋形加人工噪声的传输方案。基于凸优化理论,对中继的波束赋形权值进行了优化,优化结果是唯一的和全局性的。仿真结果表明:利用此方案能够有效地防止窃听节点窃听,减少信息泄露,从而提高安全传输速率。An Amplify-and-Forward（AF）relay beam-forming and cooperation jamming scheme is proposed in the circumstances that the eavesdropper＇s channel state information cannot be obtained and the direct link is present.The beam-forming weights of relays are optimized using convex optimization theory,and the results of the optimization are global and unique.Simulation results show that the proposed scheme can effectively prevent eavesdropping,reduce information leakage,and consequently enhance secure transmission rate.

关 键 词：通信技术 物理层安全 中继波束赋形 协作干扰 抗窃听 人工噪声 

分 类 号：TN925[电子电信—通信与信息系统]