【作者】 朱伟； 陆锦辉； 束锋； 吴肖敏； 胡锦松； 张一晋； 李骏；

【Author】 Zhu Wei;Lu Jinhui;Shu Feng;Wu Xiaomin;Hu Jinsong;Zhang Yijin;Li Jun;Nanjing University of Science and Technology;Fujian Agriculture and Forestry University;China Research Institute of Radio Wave Propagation;Southeast University;

【机构】 南京理工大学； 福建农林大学； 中国电波传播研究所； 东南大学；

【摘要】 提出一种基于信泄噪比(Signal-to-Leakage-and-Noise Ratio,SLNR)的多用户方向调制合成方法,通过设计多期望用户、多窃听机情形下的波束成形向量,使得有用信息的功率在期望方向上达到最大,同时人工噪声的功率在窃听方向上达到最大。仿真结果表明,所提的方法既满足发射机与合法接收机可靠通信的要求,又降低被窃听的概率,与现有的零空间投影法相比,可以在期望方向上提供更高的安全速率。更多还原

【Abstract】 As a promising technology for securing wireless communications at the physical layer,directional modulation(DM) is inherently different from the conventional key-based cryptographic methods.This paper proposes a synthesis approach by designing beamforming vectors in multidesired-user and multi-eavesdropper circumstances based on signal-to-leakage-and-noise ratio(SLNR) for multi-user DM,which maximizes the power of the useful information along desired directions and the artificial noise in eavesdropping directions,simultaneously.According to simulation results,the proposed approach satisfies the requirement of reliable communication between transmitter and legitimate receivers and lowers the probability of intercept,as well as provides higher security rate compared to the null-space projection.更多还原