摘要我国现有的铁路无线通信技术已步入高速发展的重要阶段。《中长期铁路网规划》中表明：截止至2020年，中国的客运专线将超过1。6万公里。主要包括三个城际客运系统与“四横”、“四纵”八条客运专线等的建设[1]。近年来，随着国民经济和社会发展需求的不断增长，人们对GSM-R无线信道模型进行研究也在不断深入。首先，本文详细地讨论了GSM-R无线通信系统的相关原理，并对大尺度、小尺度衰落以及无线电波的传播特性进行了深入地分析研究。其次，对于GSM-R铁路无线信道模型建立方法进行了讨论。最后，针对高速铁路实际运行情况，综合本文推导而得的参数，结合既有的无线信道模型，建立契合高速铁路实际运营条件下的无线信道模型。同时利用MATLAB软件进行了半实物仿真，以此来检验改进后信道的性能和实用性。75959
作为一种无线通信的传输平台，GSM-R及其无线信道模型的研究为铁路信息化奠定了基础，有利于推进铁路建设数字化、智能化时代进程。
该论文中有图30个，表11个，参考文献20篇。
毕业论文关键字：高速铁路 GSM-R 信道模型研究 电波传播特性
The Research on GSM - R Wireless Channel Model
Abstract Now, railway wireless communications technology in China has entered a stage of rapid development。 The national medium and long term railway network plan shows that by 2020, China's passenger line will reach more than 16,000 kilometers, including the constructions of 3 passenger intercity passenger transport systems, "four-cross" and "the four vertical" 8 passenger intercity passenger transport lines in total [1]。 In recent years, with the growing demand for national economic and social development, the research on GSM-R wireless channel model has been thorough。
First of all, the relevant principles of GSM-R system will be discussed in detail, including the propagation characteristics of radio waves, radio channel classification, four effects of mobile communication and analysis of radio wave propagation model。 Secondly, the methods for modeling GSM-R will be discussed in depth。 Last but not least, I will have an argument about the actual operating conditions of railway。 At the same time, I will integrate the parameters which have been derived before and the existing wireless channel model。 As a result, the correspondent high-speed railway wireless channel model under actual operating conditions will be established。 Semi-physical simulation using MATLAB software in order to test improved the performance and usefulness of the channel。
As a transport platform for wireless communications, the research of GSM-R and its wireless channel model have laid the groundwork for railway informationization。 It is conducive to promoting the process of railway construction era of digitalization and intelligence。
There are 30 pictures, 11 charts and 20 reference documentations in total。
Key words: high-speed railway GSM-R channel model radio wave propagation prediction characteristics
目 录
摘要 I
Abstract II
图清单 IV
表清单 V
变量注释表 VI
1绪论 1
1。1 GSM-R系统概述 1
1。3 本文研究目的和意义 3
1。4 本文主要工作 GSM-R无线信道模型研究MATLAB仿真:http://www.youerw.com/tongxin/lunwen_87029.html