Adaptive Cooperative Jamming for Secure Communication in Energy Harvesting Relay Networks

被引：25
作者：
Cao, Kunrui [1 ,2 ]
Wang, Buhong [2 ]
Ding, Haiyang [1 ]
Tian, Jiwei [2 ]
机构：
[1] Natl Univ Def Technol, Sch Informat & Commun, Xian 710106, Peoples R China
[2] Air Force Engn Univ, Sch Informat & Nav, Xian 710077, Peoples R China
来源：
IEEE WIRELESS COMMUNICATIONS LETTERS | 2019年 / 8卷 / 05期
基金：
中国国家自然科学基金;
关键词：
Physical layer security; energy harvesting; cooperative communications; optimal power allocation; POWER ALLOCATION; TRANSMISSION;
D O I：
10.1109/LWC.2019.2914108
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
This letter studies the problem of secure communication for a dual-hop energy harvesting (EH) relay network in the presence of multiple eavesdroppers. An adaptive cooperative jamming (ACJ) scheme is proposed, which can adaptively adjust power allocation factor to maximize the secrecy rate in practical networks where there is no eavesdroppers' channel-state-information (CSI). To evaluate the performance of the proposed scheme, we analyze the ergodic secrecy capacity (ESC) of multi-antenna networks using the ACJ, and derive the closed-form expressions of the ESC for large antenna systems. Simulation results show that the proposed scheme outperforms the benchmark scheme.
引用
收藏
页码：1316 / 1319
页数：4
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