针对中继不可信的协同安全传输方案设计  

Design of Security Transmission Scheme for Cooperative Communication with Untrusted Relay

作　　者：李行博 臧国珍[2] 黄顺斌[1] 高媛媛[2] 

机构地区：[1]解放军理工大学通信工程学院学员大队1营4连,江苏南京210007 [2]解放军理工大学通信工程学院

出　　处：《军事通信技术》2015年第2期34-39,共6页Journal of Military Communications Technology

摘　　要：协同通信利用其他用户终端进行中继传输,虽然可极大提高系统的抗衰落能力,但其在信息传输的过程中势必会将信息泄漏给中继用户,为用户信息传输的私密性和安全性带来了极大挑战。研究表明,最小频移键控(MSK)信号有多种产生方法,且相同信息经不同产生方法得到的已调信号波形各不相同,这意味着MSK调制器结构对输入信息具有特定的加密功能。借鉴跳频通信的思想,针对中继节点不可信的三节点协同通信系统,文中提出一种随机跳变MSK调制器结构的协同安全传输方案。仿真结果表明,该方案在充分利用协同通信技术优势的同时还可有效解决中继节点不可信问题,实现信息传输在可靠性与安全性方面的综合性能提升。Cooperative commu transmitting the information with nication can improve the anti-fading ability of the system by the help of the relay nodes, while the transmitted messages may be obtained by the relay nodes during the cooperative transmission, which causes great chal- lenge for the privacy and security of information transmission. Researches show that the MSK （Minimum-Shift Keying） signal has many kinds of generating method, and that the signal wave- forms generated by the different generating method for the same messages are different. This means the MSK modulator structure has certain encrypting function for the input messages. Re- ferring to the idea of frequency hopping communication, and aiming at the three nodes coopera- tive system with untrusted relay, a security cooperative transmission scheme via MSK modulator structure hopping randomly was presented in this paper. Simulation results show that this scheme can obtain the performance advantage of cooperative transmission and avoid the transmit- ted messages to be eavesdropped by the untrusted relay simultanuoasly.

关 键 词：协同通信 物理层安全 最小频移键控调制 

分 类 号：TN929.5[电子电信—通信与信息系统]