基于MP-WFRFT的物理层保密增强安全方案  

A Physical Layer Security Enhancement Scheme Based on MP-WFRFT

作　　者：吴佳隆 任清华[1,2] 李明 WU Jialong;REN Qinghua;LI Ming(Information and Navigation College,Air Force Engineering University,Xi’an,Shaanxi 710077,China;Key Laboratory of Aerospace Information Applications,China Electronics Technology Group,Shijiazhuang,Hebei 050081,China)

机构地区：[1]空军工程大学信息与导航学院,陕西西安710077 [2]中国电子科技集团公司航天信息应用技术重点实验室,河北石家庄050081

出　　处：《信号处理》2021年第4期528-535,共8页Journal of Signal Processing

基　　金：国家重点实验室合作基金资助课题(kx162600022)。

摘　　要：针对战场无线网络全域开放性、广播特性以及实时移动性等特征带来的通信系统安全隐患,为保障战场网络内消息的安全有效传输,本文通过对物理层信号的安全分析研究,结合变换域通信手段与经典加密方法,在信道共享密钥的基础上提出了一种基于MP-WFRFT的保密增强安全方案。通过建立物理层安全加密模型,给出了信道探测与共享密钥生成方法,在扰乱星座方案加持下利用MP-WFRFT多加密参数的混合载波调制对传输信号星座进行扰乱处理。仿真分析表明,本方案能够提升战场无线网络内信号的星座熵,并且在系统误码率性能上相较以往方案存在大幅度提升,为战场无线网络整体性能提升提供了一种新型方案。Aiming at the communication system security risks caused by the characteristics of battlefield wireless network, such as global openness, broadcasting characteristics and real-time mobility, to ensure the safe and effective transmission of messages in the battlefield network, In this paper, combining transform domain communication method with classical encryption method, a secure enhancement scheme based on MP-WFRFT and the Shared channel key is proposed. By establishing the physical layer secure encryption model, the channel detection and Shared key generation methods are given and mixed carrier modulation based on MP-WFRFT multi-encryption parameter is used to distort the signal constellation under the perturbation constellation scheme. Simulation analysis shows that, this scheme can improve the constellation entropy of the signal in the battlefield wireless network. In addition, the bit error rate performance of the system has been greatly improved compared with the previous schemes, it will provide a new scheme for improving the overall performance of battlefield wireless network.

关 键 词：战场无线网络 物理层安全 WFRFT 共享密钥 信号星座图 

分 类 号：TP92[自动化与计算机技术]