基于极化多维星座调制的OFDM物理层安全通信机制  

A Physical Layer Secure Communication Mechanism Based on Multidimensional Constellation

作　　者：刘喆 张巧遇 程明智 LIU Zhe;ZHANG Qiao-yu;CHENG Ming-zhi(National Secrecy Science and Technology Evaluation Center,Beijing 100044,China;Institute of Information Engineering,Chinese Academy of Sciences,Beijing 100093,China;School of Cyber Security,Chinese Academy of Sciences,Beijing 100049,China;School of New Media,Beijing Institute of Graphic Communication,Beijing 102600,China)

机构地区：[1]国家保密科技测评中心,北京100044 [2]中国科学院信息工程研究所,北京100093 [3]中国科学院大学网络空间安全学院,北京100049 [4]北京印刷学院新媒体学院,北京102600

出　　处：《北京邮电大学学报》2018年第4期9-15,共7页Journal of Beijing University of Posts and Telecommunications

基　　金：国家自然科学基金项目(61501458);北京市高等学校高水平人才交叉培养“实培计划”项目(2016-28)

摘　　要：提出了一种基于极化多维星座的正交频分复用（OFDM）物理层安全通信机制,通过高维星座设计,可以有效地加密调制信息,保护无线通信的调制信息不被发现,从而保证无线通信的安全.在此基础上,推导并仿真了系统误码率性能和频谱利用率.仿真结果证明,OFDM极化多维星座调制方案可以有效防止窃听者获取调制信息,并且其误符号率及频谱效率都显著优于传统OFDM-QAM调制.An orthogonal frequency division multiplexing（ OFDM） multi-carrier physical layer secure communication mechanism based on multi-dimensional constellation was presented,which can effectively prevent the modulation information of wireless communication from being eavesdropped,therefore,the security communication is guaranteed. Based on multi-dimensional constellation,the system symbol error rate performance and spectrum utilization are derived and simulated. Simulations show that the multi-carrier polarization state-amplitude-phase modulation scheme can effectively prevent the eavesdropper from obtaining the modulation information,and its symbol error rate and spectral efficiency are significantly better than the traditional OFDM-QAM modulation.

关 键 词：物理层安全 多维星座 正交频分复用 误符号率 频谱效率 

分 类 号：TN929.53[电子电信—通信与信息系统]