拐角场景太赫兹信道传输及物理层安全特性研究  

Terahertz channel propagation and physical layer security characteristics in corner scenarios

作　　者：苏悦 李达 刘嘉诚 崔家源 孙厚军[1,2,3] 马建军 SU Yue;LI Da;LIU Jiacheng;CUI Jiayuan;SUN Houjun;MA Jianjun(School of Integrated Circuits and Electronics,Beijing Institute of Technology,Beijing 100081,China;Beijing Key Laboratory of Millimeter and Terahertz Wave Technology,Beijing Institute of Technology,Beijing 100081,China;Tangshan Research Institute,Beijing Institute of Technology,Tangshan Hebei 063099,China)

机构地区：[1]北京理工大学集成电路与电子学院 [2]北京理工大学毫米波与太赫兹技术北京市重点实验室,北京100081 [3]唐山研究院,河北唐山063099

出　　处：《太赫兹科学与电子信息学报》2025年第3期214-224,共11页Journal of Terahertz Science and Electronic Information Technology

基　　金：国家自然科学基金资助项目(62071046,62471033)。

摘　　要：随着6G网络的发展,深入研究城市环境中太赫兹信道的传播特性对于设计高效、可靠、安全的通信系统至关重要。本文通过理论分析、数值仿真和实验测量相结合的方法,系统地研究了不同类型建筑拐角(包括锐角、直角、钝角和弧形)对太赫兹信道传输及其物理层安全的影响。实验采用了太赫兹信道测量系统,在140 GHz、225 GHz和320 GHz三个频率下进行测量,并使用数值仿真和刀口衍射模型进行理论分析。研究结果揭示了拐角结构对太赫兹波传播的影响,包括衍射和反射现象,以及频率变化对这些现象的影响。该项工作为太赫兹通信系统在城市环境中的部署提供了理论指导。With the development of 6G networks,in-depth research on the propagation characteristics of terahertz(THz)channels in urban environments is crucial for designing efficient,reliable,and secure communication systems.The impact of different types of building corners(including acute,right,obtuse,and curved angles)on the transmission of THz channels and their physical layer security are systematically investigated through a combination of theoretical analysis,numerical simulation,and experimental measurement.The experiments are conducted by using a THz channel measurement system at three frequencies:140 GHz,225 GHz,and 320 GHz.Theoretical analysis is performed by using numerical simulations and knife-edge diffraction models.The research findings reveal the effects of corner structures on the propagation of THz waves,including diffraction and reflection phenomena,as well as the impact of frequency variations on these phenomena.This work provides theoretical guidance for the deployment of THz communication systems in urban environments.

关 键 词：太赫兹信道 建筑物拐角 信道衍射 物理层安全 

分 类 号：TN929[电子电信—通信与信息系统]