一种基于M-APSK调制的物理层安全方案  

Physical Layer Security Scheme based on M-APSK Modulation

作　　者：蒋炫佑 魏以民 王雷 彭磊 JIANG Xuan-you;WEI Yi-min;WANG Lei;PENG Lei(School of Communication Engineering,PLA Army Engineering University,Nanjing Jiangsu 210000,China)

机构地区：[1]中国人民解放军陆军工程大学通信工程学院,江苏南京210000

出　　处：《通信技术》2018年第12期2798-2804,共7页Communications Technology

基　　金：国家自然科学基金项目(No.61301157)~~

摘　　要：提升安全性能一直是大多数无线通信系统中必须考察的关键问题。然而,传统的加密/解密过程涉及密钥分发/协商协议的高复杂性和大信令开销。为此,许多物理层安全方案被提出并受到广泛关注。其中,通过预先设计对发送信号做角度变换来避免预设密钥的方法性能良好,因此具有可旋转特性、性能表现良好的一种M-APSK信号星座被引起关注。鉴于此,提出了一种物理层安全方案,以M-APSK信号为研究对象,基于可变的信道相位选择调制类型来保护传输的数据,提高对窃听者的免疫能力。最后,通过仿真验证较好地证明了该方案的安全性能,具有一定的实用价值。Improving security has always been a key issue that must be considered in most wireless communication systems.However,the traditional encryption/decryption process involves the complexity of high key distribution/negotiation protocols and large signaling overhead.For this reason,many physical layer security solutions have been proposed and received widespread attention.Among them,a method performing the angle conversion on the transmitted signal in advance can break the limit of key and has good performance.Therefore,an M-APSK signal model with rotatable characteristics and good performance has been widely concerned.In view of this,a physical layer security scheme is proposed.It takes the M-APSK signal as the research object and protects the transmitted data based on the variable channel phase selection modulation type,which improves the immunity to the eavesdropper.Finally,the safety performance of the scheme is proved by simulation experiments,which has certain practical value.

关 键 词：M-APSK调制 物理层安全 信道相位自适应 误比特率 

分 类 号：TN911[电子电信—通信与信息系统]