Study on a scheme for in-train repeaters in high-speed trains

Zeng Lingfeng1; Li Hanbing1

doi:10.13756/j.gtxyj.2012.01.005

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Study on a scheme for in-train repeaters in high-speed trains

- Study on a scheme for in-train repeaters in high-speed trains
- Study on Optical communication Issue 1, Pages: 60-63(2012)
- 作者机构：
  
  1. 光纤通信技术和网络国家重点实验室
  2. 武汉虹信通信技术有限责任公司
- 作者简介：
- 基金信息：
- DOI：10.13756/j.gtxyj.2012.01.005
  CLC： TN929.5
- Published：2012，
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[1]曾令峰,李汉兵.高速列车车载直放站方案研究[J].光通信研究,2012(01):60-63.

Zeng Lingfeng1, Li Hanbing1. Study on a scheme for in-train repeaters in high-speed trains. [J]. (1):60-63(2012)
[1]曾令峰,李汉兵.高速列车车载直放站方案研究[J].光通信研究,2012(01):60-63. DOI： 10.13756/j.gtxyj.2012.01.005.

Zeng Lingfeng1, Li Hanbing1. Study on a scheme for in-train repeaters in high-speed trains. [J]. (1):60-63(2012) DOI： 10.13756/j.gtxyj.2012.01.005.

摘要

为了改善高速列车中的通信质量

提出了一种高速铁路移动通信的车载直放站方案。文章简要介绍了车载直放站方案的特点

通过电波传播角度研究了该方案对于克服穿透损耗、缓解快速切换的优点

并从理论和测试结果上说明带有AFC（自动频率控制）功能的车载直放站对于提升信号质量所起的实质性作用。

Abstract

In order to improve the communication quality in high-speed trains

a scheme for in-train repeaters in the high-speed mobile environment is presented.In this paper

the characteristics of the in-train repeater scheme are briefly introduced.Then

the advantages of this scheme in overcoming the penetration loss and alleviating the fast handoff are studied from the angle of wave propagation.Finally

the substantial role of the in-train repeaters with AFC functions in improving the signal quality is explained theoretically and on the basis of the testing results.

关键词

车载直放站穿透损耗快速切换多普勒频移自动频率控制

Keywords

in-train repeaterpenetration lossfast handoffDoppler frequency shiftAFC

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