摘要
针对方向调制物理层安全技术提出了一种分布式加权窃密方法。分析了分布式窃密的可能性,指出窃听者可以实现窃密的本质原因是能够利用多个窃听信道对合法信道进行拟合,消除信号星座点畸变和干扰。然后针对具有恒模特性的相移键控(PSK)信号,设计了分布式接收模型和基于修正恒模的加权窃密方法。最后仿真了分布式窃密方法的性能,从理论上指出方向调制信号在一定条件下仍然是不安全的。
A distributed eavesdropping method for directional modulation is proposed. Firstly, the possibility of distributed eavesdropping is analyzed,and it is pointed out that the eavesdroppers can use sufficient illegal channels to imitate the legitimate channel and eliminate the interference. Then, the constant modulus property of Phase-Shift-Keying(PSK) modulation is applied to design a distributed receive approach and a theft weighted algorithm. Simulation results show the eavesdropping method could get confidential message,pointing out that directional modulation technology still remains unsafe in theory.
出处
《太赫兹科学与电子信息学报》
2016年第2期263-269,共7页
Journal of Terahertz Science and Electronic Information Technology
基金
国家自然科学基金资助项目(61379006
61171108)
关键词
物理层安全
方向调制
窃密
分布式接收
physical layer security
directional modulation
eavesdropping
distributed receive
