ADSL宽带组网与测试

电子通信论文编号:TX008         论文字数:30081,页数:44

目录
第一章：绪论 .......................................................................4
第二章：接入网的概述 ...............................................................6
2.1接入网的概念.....................................................................6
2.2接入网技术介绍 ..................................................................6
2.3国内外ADSL接入网发展现状 ........................................................7
第三章：ADSL技术研究 ...............................................................8
3. 1 ADSL技术标准...................................................................8
3. 2 ADSL原理和技术性能 ............................................................9
3.3 ADSL系统的接入方式和接入模型....................................................10
3. 4 ADSL的调制和解调技术 ..........................................................12
3. 5 ADSL用户终端设备的安装 ........................................................12
3.6 VDSL ...........................................................................13
3.7 ADSL2十 ........................................................................14
    3.7.1 ADSL2+简介 ...............................................................14
第四章：我国电信IP城域网网络现状 ...................................................16
4.1 IP城域网业务现状................................................................16
4.2路由设计 ........................................................................18
4.3光纤接入技术 ....................................................................19
4. 4 HFC接入技术....................................................................22
第五章ADSL接入网的优化 .............................................................23
5.1城域网结构的改进 ................................................................23
5. 2接入网网络结构的优化 ...........................................................25
5. 3 DSLAM和BRAS的上行流量规划 .....................................................26
5. 4 ADSL接入端局布局规化 ..........................................................27
   5.4.1合理分散、就近用户 .........................................................27
5.5 通过线路改造优化网络通信质量 ...................................................32
     5.5.1电缆的结构 ...............................................................32
5.6优化网络流量 ....................................................................34
    5.6.1组建视频业务专网 ..........................................................34
5.7加强用户管理和认证控制 ..........................................................35
5. 8 ADSL用户端(ATU-R)网络的组建与优化 .............................................36
   第六章：ADSL的在线测试技术 ......................................................40
6.1在线测试系统设计  ...............................................................40
6.2在线测试功能  ...................................................................41
6.3应用示例  .......................................................................42
     第七章：结束语 ................................................................43
7. 1过去几年我国ADSL发展成果与状况 .................................................43
7.2低成本加速应用推广低质量阻碍再上规模 ............................................44
7.3互联网需要高带宽高带宽呼唤新应用.................................................44
7.4我国ADSL市场面临的困难 ..........................................................44
7.5未来ADSL的发展趋势...............................................................45

摘要：本文主要介绍了我国ADSL的发展现状以及ADSL的基本特点，主要是从ADSL技术的改善做了详细的阐述，另外本文也花了大量的手笔介绍宽带接入系统以及如何改善通信系统，以提高资源的有效利用，达到利用有限的资源创造最大的经济效益。
    本文介绍了几种主要的宽带接入系统，包括光纤的接入。同时简要介绍了ADSL2+的性能特征。最后本文讨论了如何优化网络，以及在线测试技术。

    Abstract: This paper has introduced mainly the basic characteristic of ADSL of our country that develops present situation as well as ADSL , major make from the improvement of ADSL technology is detailed to elaborate , additionally, this paper has also spent the plenty of handwriting introduction systems of broadband access as well as how to improve communication system, with the effective use that raises resource , reach the resource of limited use to create biggest economic benefits.
This paper has introduced some kinds of major systems of broadband access, include optical cable receive to enter. At the same time, have introduced the performance feature of ADSL2+ briefly. Final this paper has discussed how to optimization network, as well as it is online to test technology .