人工干扰下的中继不可信协同传输通信系统物理层安全技术研究
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摘要
文章针对中继不可信的协同通信系统,采用在信源端发送信号的同时发送人工干扰信号的方式来提高系统的安全性能,使用贪心算法对信源功率进行分配,以求得最大的安全容量,并在此基础上研究了外部窃听节点同时存在的情况。从仿真结果可知该方案在对抗内、外部窃听节点时是安全有效的。
This paper investigates the cooperative communication system with untrusted relay using the new scheme that the sourcetransmits the artificial jamming signals and the source signals at the same time. We exploit greedy power allocation algorithm to divide thesource power to ensure maximum secrecy capacity. Besides, we analyze the situation that external eavesdropper and untrusted relay existat the same time. The simulation results show that the scheme can resist both internal and external eavesdropping nodes.
This paper investigates the cooperative communication system with untrusted relay using the new scheme that the sourcetransmits the artificial jamming signals and the source signals at the same time. We exploit greedy power allocation algorithm to divide thesource power to ensure maximum secrecy capacity. Besides, we analyze the situation that external eavesdropper and untrusted relay existat the same time. The simulation results show that the scheme can resist both internal and external eavesdropping nodes.
引文
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[2]LEUNG S K,HELLMAN M E.The Gaussian wire-tap channel[J].IEEE Transaction on Information Theory,1978(4):451-456.
[3]CSISZAR I,KORNER J.Broadcast channels with confidential messages[J].IEEE Transaction on Information Theory,1978(3):339-348.
[4]HE X,YENER A.Cooperation with an untrusted relay:a secrecy perspective[J].IEEE Transaction on Information Theory,2010(8):3807-3827.
[5]HE X,YENER A.Two-hop secure communication using an untrusted relay:a case for cooperative jamming[C].New Orleans:IEEEGlobal Communication Conference,2008:1-5.
[6]HEX,YENER A.Two-hop secure communication using an untrusted relay[J].Wireless Communications and Networking Laboratory,2009(9):1-10.
[2]LEUNG S K,HELLMAN M E.The Gaussian wire-tap channel[J].IEEE Transaction on Information Theory,1978(4):451-456.
[3]CSISZAR I,KORNER J.Broadcast channels with confidential messages[J].IEEE Transaction on Information Theory,1978(3):339-348.
[4]HE X,YENER A.Cooperation with an untrusted relay:a secrecy perspective[J].IEEE Transaction on Information Theory,2010(8):3807-3827.
[5]HE X,YENER A.Two-hop secure communication using an untrusted relay:a case for cooperative jamming[C].New Orleans:IEEEGlobal Communication Conference,2008:1-5.
[6]HEX,YENER A.Two-hop secure communication using an untrusted relay[J].Wireless Communications and Networking Laboratory,2009(9):1-10.