高速铁路WCDMA网网络信号覆盖与优化探讨.pdf

高速铁路WCDMA网络信号覆盖与优化探讨本人完全了解南京邮电大学有关保留、使用学位论文的规定,学校有权保留学位论文并向国家主管部门或其指定机构送交论文的电子版和纸质版。有权将学位论文用于非盈利目的的少量复制并允许学位论文进入学校图书馆被查阅。有权将学位论文的内容编入有关数据库进行检索。有权将学位论文的标题和摘要汇编出版。论文作者签名:导师签名:日期:日期:高速铁路WCDMA网络信号覆盖与优化探讨南京邮电大学工程硕士学位论文摘要学科、专业:工学电子与通信工程研究方向:移动通信作者:何高兵指导教师:杨龙祥题目:高速铁路WCDMA网网络信号覆盖与优化探讨英文题目:workofHigh-speedRailway主题词:WCDMA网络高铁多普勒效应越区切换网络覆盖优化Keywords: WCDMA network ; high-speed railway; the Doppler effect; work coverage; optimizationPlanning, Jiangsu, Radio work南京邮电大学工程硕士研究生学位论文摘要I摘要近年来高速铁路的快速发展给移动通信带来了新的机遇,,受复杂的地理条件影响,多径效应和多普勒频移使信号产生衰落,无线信道的性能发生剧烈的变化,因此,需要对高速铁路沿线的小区覆盖做一个合理的规划,以保证通信的可靠性. 本文首先对高铁无线环境特点进行了分析,包括多普勒效应,越区切换、链路预算、车体穿透损耗分析、重叠覆盖区规划等。然后根据目前常见的高铁覆盖方式,,目前最有效的方法是采用光纤拉远覆盖技术和RRU共PN的小区方案,以增大小区的覆盖范围,并对高铁隧道桥梁无线环境覆盖建设方案、小区容量和覆盖规划、天线选型、小区重叠、以及配套建设提出合理的解决方案。并以京广铁路和汉丹动车为例,提出具体的建设方案,并结合京广铁路实际建网情况对隧道覆盖、小区切换、配套建设进行了实证分析。最后,对本文所做的工作做出总结,并对后期高速铁路优化工作进行了展望。主题词:WCDMA网络高铁多普勒效应越区切换网络覆盖优化南京邮电大学工程硕士研究生学位论文AbstractIIAbstractIn recent years, the rapid development of high-speed railway has brought new opportunities to the mobile communications, but also posed a severe challenge to munication plicated geographical conditions, multipath effects and the Doppler shift of the signal generated and the performance of the wireless channel can be changed dramatically. Thus, a reasonable coverage planning for high-speed rail along the district is needed to ensure the reliability paper first analyzes the characteristics of the wireless environment for high-speed rail, including the Doppler effect, handover, link budget, the vehicle ration loss analysis, overlapping coverage areas planning, and so on. Then, network coverage and optimization programs are put forward based on the most common high-speed rail coverage. In order to reduce the number of switching system, the most effective method is to use optical zooming covering techno