隧道模拟环境下城市轨道交通车地综合通信系统双漏泄电缆传输性能研究
宋高云
Research on Transmission Performance of Double Leakage Cable in Urban Rail Transit LTE-M System under Tunnel SimulationEnvironment
SONG Gaoyun
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作者信息:中铁建电气化局集团第一工程有限公司， 471013， 洛阳
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Affiliation:The First Engineering Co., Ltd. of China Railway Construction Electrification Bureau Group, 471013, Luoyang, China
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关键词:
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Key words:
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DOI:10.16037/j.1007-869x.2022.07.022
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中图分类号/CLCN:U231.7;TM248+.3
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栏目/Col:研究报告
摘要:
基于LTE（长期演进）技术的车地无线通信系统逐渐成为城市轨道交通车地通信新的发展方向。采用双漏泄电缆,覆盖的LTE-M（城市轨道交通车地综合通信系统），通过加载模拟业务，对漏泄同轴电缆覆盖的传输性能进行了模拟试验。研究发现：相比于相同极化方式，当两根漏泄电缆采用HV方式（即一根为水平极化、另一根为垂直极化）覆盖时，车地通信系统的平均传输速率约提升50%；当漏泄电缆间距由1.0 m减少至0.3 m时，系统的传输速率没有明显下降。提出了适用于城市轨道交通隧道环境的双漏泄电缆覆盖方案：采用由HV方式组成双漏泄电缆且漏缆间距设定为0.3 m。该方案可以在最小的漏缆间距下获得最佳的信号传输速率。
Abstracts:
The vehicle-wayside wireless communication system based on LTE-M technology has become the new development direction. The LTE-M (urban rail transit vehiclewayside wireless communication system) using double leaky cable coverage is studied, and simulation service test cases are loaded to simulate the transmission performance of leaky coaxial cable coverage. The study found that, compared to same polarization mode, when two leaky cables are covering in HV mode (one is horizontally polarized and one is vertically polarized), the average transmission rate of the vehicle-wayside communication system is increased by about 50%. There is no significant decrease in the system transmission rate when there is a reduction of leaky cable distance from 1.0 m to 0.3 m. A double leaky cable deployment scheme suitable for urban rail transit tunnel environment is proposed. When the double leaky cables are formed in HV mode and the distance between the two leaky cables is 0.3 m, the best transmission rate can be obtained at the minimum leaky cable distance in this scheme.
引文 / Ref:
宋高云.隧道模拟环境下城市轨道交通车地综合通信系统双漏泄电缆传输性能研究[J].城市轨道交通研究，2022，25（7）：107.
SONG Gaoyun.Research on Transmission Performance of Double Leakage Cable in Urban Rail Transit LTE-M System under Tunnel SimulationEnvironment[J].Urban mass transit，2022，25（7）：107.
SONG Gaoyun.Research on Transmission Performance of Double Leakage Cable in Urban Rail Transit LTE-M System under Tunnel SimulationEnvironment[J].Urban mass transit，2022，25（7）：107.
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