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Channel characteristics analysis of train-to-train wireless communication 被引量:2

列车对列车无线通信中的信道特性分析
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摘要 Train-to-train(T2T)communication can provide protection for existing train-to-ground private network communication,and its channel characteristics directly affect the application of upper-layer communication technologies.In this study,based on the spatial distribution structure of railway operation scenarios and Fresnel zone theory,we propose a frequency allocation scheme for direct communication between tracking trains in flatland and long straight tunnel scenario.Then we use the estimation method of radio wave attenuation caused by rainfall to analyze the large-scale path loss fading of multi-band wireless channels.Furthermore,we derive the calculation equation of max Doppler frequency shift suitable for T2T communication and describe the multipath wave in the tunnel by ray tracing method to analyze small-scale fading.Simulation analysis shows that the Doppler shift value of T2T communication low frequency band is significantly lower than the frequency shift value of the train-to-ground communication under the same speed conditions.
作者 GAO Yunbo TIAN Zhiyu LI Maoqing YUE Lili YAN Lixia CHENG Xuan 高云波;田智愚;李茂青;岳丽丽;闫丽霞;程璇(兰州交通大学自动化与电气工程学院,甘肃兰州730070)
出处 《Journal of Measurement Science and Instrumentation》 CAS CSCD 2021年第3期331-339,共9页 测试科学与仪器(英文版)
基金 National Natural Science Foundation of China(No.61763023) Lanzhou Jiaotong University-Tianjin University Innovation Fund(No.20180519)。
关键词 train-to-train communication Fresnel zone long straight tunnel wireless channel Doppler frequency shift calculation 列车对列车通信 菲涅尔带 长直隧道 无线信道 多普勒频移计算
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