基于ITS模型的短波宽带移动信道建模与仿真  

Modeling and Simulation of High Frequency Broadband Mobile Channel Based on ITS Model

作　　者：李国军 王彦淞 叶昌荣 艾昊 LI Guo-jun;WANG Yan-song;YE Chang-rong;AI Hao(School of Optoelectronic Engineering&Chongqing International Semiconductor Institute College,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Lab of Beyond LOS Reliable Information Transmission,Chongqing University of Posts and Telecommunications,Chongqing 400065,China;Postdoctoral Research Workstation of Chongqing Key Laboratory of Optoelectronic Information Sensing and Transmission Technology,Chongqing University of Posts and Telecommunications,Chongqing 400065,China)

机构地区：[1]重庆邮电大学光电工程学院/重庆国际半导体学院,重庆400065 [2]超视距可信信息传输研究所,重庆400065 [3]重庆邮电大学光电信息感测与传输技术重庆市重点实验室博士后科研工作站,重庆400065

出　　处：《科学技术与工程》2024年第2期611-621,共11页Science Technology and Engineering

基　　金：国家重点研发计划(2019YFC1511300,2019YFC1511301,2019YFC1511303,2019YFC1511305);重庆市基础研究与前沿探索基金(cstc2021ycjh-bgzxm0072)。

摘　　要：短波宽带移动信道模型是远程机动平台移动通信系统性能分析评估的基础,现有短波宽带信道模型不能有效表征机动平台移动信道快时变多普勒效应,难以适应机动平台短波移动通信需要。鉴于此,在分析机动平台行为模式与信道时变多普勒效应的映射关系基础上,推导出了机动平台移动信道冲激响应表达式,基于ITS(international telecommunication society)模型提出了一种适用于固定与机动不同场景、不同传播模式、宽窄带融合的短波通信信道模型。利用信道冲激响应与信道散射函数从时域色散、频域色散两个维度对本文信道模型的有效性进行了验证。结果表明,该信道模型能够基于机动平台运动轨迹实现时变多普勒效应传播复现与信道模拟;也能在运动轨迹未知情况下,基于飞行器种类、机动频率等先验信息,实现具有各态历经性的机动平台短波宽带信道仿真,对机动平台短波移动通信系统效能评估有重要意义。Shortwave broadband mobile channel model is the basis for performance analysis and evaluation of mobile communication systems on remote mobile platforms.The existing shortwave broadband channel model cannot effectively characterize the fast time-varying Doppler effect of the mobile channel of the mobile platform,which is difficult to adapt to the shortwave mobile communication needs of the mobile platform.Therefore,an expression for the mobile channel impulse response of the maneuvering platform were derived based on the analysis of the mapping relationship between the behavior pattern of the maneuvering platform and the time-varying Doppler effect of the channel.And a shortwave communication channel model was also proposed based on the ITS(international telecommunication society)model for different scenarios of fixed and mobile,different propagation modes,and broadband and narrowband convergence.The validity of the channel model was verified in two dimensions:time domain dispersion and frequency domain dispersion using channel impulse response and channel scattering function.The results show that the channel model can achieve time-varying Doppler effect propagation reproduction and channel simulation based on the motion trajectory of the maneuvering platform.It is also possible to realize the maneuvering platform shortwave broadband channel simulation with each state ephemeris based on a priori information such as vehicle type and maneuvering frequency when the motion trajectory is unknown,which is important for the maneuvering platform shortwave mobile communication system effectiveness evaluation.

关 键 词：短波宽带移动信道模型 机动平台 时变多普勒效应 ITS模型 信道模拟 

分 类 号：TN92[电子电信—通信与信息系统]