Security-Aware Relaying Scheme for Cooperative Networks With Untrusted Relay Nodes

被引：91
|
作者：
Sun, Li [1 ,2 ]
Ren, Pinyi [1 ]
Du, Qinghe [1 ]
Wang, Yichen [1 ,3 ]
Gao, Zhenzhen [1 ]
机构：
[1] Xi An Jiao Tong Univ, Dept Informat & Commun Engn, Xian 710049, Peoples R China
[2] Southeast Univ, Natl Mobile Commun Res Lab, Nanjing 210096, Jiangsu, Peoples R China
[3] Univ Maryland, College Pk, MD 20742 USA
来源：
IEEE COMMUNICATIONS LETTERS | 2015年 / 19卷 / 03期
基金：
中国国家自然科学基金;
关键词：
Cooperative communications; untrusted relays; relay selection; secrecy rate; PERFORMANCE; SELECTION;
D O I：
10.1109/LCOMM.2014.2385095
中图分类号：
TN [电子技术、通信技术];
学科分类号：
0809 ;
摘要：
This paper studies the problem of secure transmission in dual-hop cooperative networks with untrusted relays, where each relay acts as both a potential helper and an eavesdropper. A security-aware relaying scheme is proposed, which employs the alternate jamming and secrecy-enhanced relay selection to prevent the confidential message from being eavesdropped by the untrusted relays. To evaluate the performance of the proposed strategies, we derive the lower bound of the achievable ergodic secrecy rate (ESR), and conduct the asymptotic analysis to examine how the ESR scales as the number of relays increases.
引用
收藏
页码：463 / 466
页数：4
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