面向车联网场景的无线信道教学仿真实验设计  

Design of teaching simulation experiments of wireless channel for vehicle networking scenario

作　　者：华博宇 倪浩然 朱秋明[1] 陈小敏[1] 鲍军委[2] 周彤彤 HUA Boyu;NI Haoran;ZHU Qiuming;CHEN Xiaomin;BAO Junwei;ZHOU Tongtong(College of Electronic Information Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China;College of Physics,Nanjing University of Aeronautics and Astronautics,Nanjing 211106,China)

机构地区：[1]南京航空航天大学电子信息工程学院,江苏南京211106 [2]南京航空航天大学物理学院,江苏南京211106

出　　处：《实验技术与管理》2023年第2期85-91,共7页Experimental Technology and Management

基　　金：国家重大科学仪器设备开发专项(61827801);实验技术研究与开发项目(SYJS202105Y);江苏省自然科学基金面上项目(BK20211182);江苏省重点研发计划(产业前瞻与关键核心技术)(BE2022067、BE2022067-3)。

摘　　要：车联网场景中的车-车通信已成为第5代移动通信技术的关键应用之一。针对车联网场景下车-车信道知识理论性强且描述抽象的问题,设计了基于MATLAB软件平台及FPGA硬件开发板的无线信道教学仿真实验,帮助学生直观理解车-车信道的基本原理。提出的实验采用QuaDRiGa信道模型框架及改进后的信道参数计算方法,能够复现出更真实的多普勒相位,从而获得连续的车-车信道输出。通过将收发端轨迹、散射簇分布及信道统计特性可视化呈现,仿真实验可清晰展示不同运动模式及通信场景下的信道差异。教学实践表明,学生能够从多普勒域及时延域分别观察车-车信道统计特性的输出,为学习车联网场景无线通信系统奠定坚实基础。Vehicle-to-vehicle communication in the vehicle networking scenario has become one of the key applications of the fifth-generation mobile communication technology.To solve the problem that the knowledge of vehicle-to-vehicle channel in vehicle networking scenario is theoretical and abstract,this paper designs wireless channel teaching simulation experiments based on the MATLAB software platform and FPGA hardware development board,which is convenient for students to intuitively understand the basic principles of vehicle-to-vehicle channel.The proposed experiments adopt the QuaDRiGa channel model framework and the improved channel parameter calculation method,which can reproduce a more realistic Doppler phase and obtain a continuous vehicle-vehicle channel output.By visualizing the transceiver trajectories,scattering cluster distribution and channel statistical characteristics,the simulation experiment can show the channel differences in different motion modes and communication scenarios.Teaching practice shows that students can observe the output of vehicle-vehicle channel statistical characteristics from the Doppler domain and the time-delay domain respectively,which can lay a solid foundation for learning the wireless communication system in the vehicle networking scenario.

关 键 词：无线信道 车联网场景 车-车信道 实验设计 

分 类 号：TN929.5[电子电信—通信与信息系统]