摘要随着高铁技术的不断发展，人们现在已经习惯把高铁作为出行的主要工具，由于高铁的通信环境很特殊，世界上的各大通信公司都在不断的完善用户终端在高速运动环境中的通信服务。目前关于高铁 Wifi 的研究还在继续，尽管也有少数科研机构研究出了一套可以在高铁上让人们通过 Wifi 进行通信的方法，但并未投入大规模使用。77646

本文从高速铁路在快速移动的条件下用户对无线网接入的客观需求出发，重点探索讨论了高铁Wifi接入网络的覆盖方案，为以后的高铁 Wifi 探索与应用研究提供了一定意义上的参考。

    首先，本文详细地比较了国内外目前已经出现的高速铁路移动无线网接入络的方案，并指出了他们各自的优缺点，以及对方案的应用背景和限制条件进行了说明。其次介绍了一种新的利用光载波传输信号的网络技术，并提出了一种基于ROF架构的高铁无线网接入方案，它是利用CCU来集中控制各个RAU 达到目的，并且利用光纤的特性来传输数据信号。文章还从列车外部网络结构和车厢内部网络结构两方面来探讨整个方案的可行性。最后详细的介绍了这种网络架构的理论特点，设计出了这种网络架构。

该论文有图14幅，表2个，参考文献30篇。

毕业论文关键词：高铁  无线网架构  光载波通信 

Application and exploration with high-speed rail Wifi

Abstract With the development of high-speed rail technology。 People now have become accustomed to use the high-speed trains as the main tool to travel, due to the high speed rail communication environment is very special,most of the telecommunication companies are in the continuous improvement of user terminal in high-speed movement of communication service。 At present, the research on high-speed rail Wifi is still continuing, although there are a few research institutes have developed a set of high-speed rail for people through the Wifi communication method, but did not put into large-scale use。

This article comes from the objective demand of the users to access the wireless network in the fast moving condition of the high speed railway, discuss the coverage scheme of high speed railway Wifi access network, and provides a reference for the future research of high speed railway Wifi。

First of all, this paper compared with the domestic and foreign high-speed railway mobile wireless network in detailly, and points out their respective advantages and disadvantages, the application background and the limitation of the scheme are also be described。 Then introduces a new network technology using optical carrier transmission signal, then a high speed wireless network access scheme based on ROF architecture is proposed, it using CCU to control the each of RAU, and using the characteristics of the optical fiber to transmit data signals。 The article also discusses the two aspects of the external network structure and the internal network structure of the train。 At last, this paper introduced the theoretical characteristics of the network architecture, and designed this network architecture。

This paper has 14 pictures, 2 tables and 30 references。

Key Words：High-speed Rail  Wireless Network Architecture  Radio Over Fiber

目 录

摘  要 I

Abstract II

图清单 V

表清单 V

变量注释表 VI

1  绪 论 1

    1。1 课题研究背景及意义