毕业论文设计移动通信系统网络信号的室内覆盖.DOCVIP

本科生毕业论文（设计） 题 目：移动通信系统网络信号的室内覆盖 目 录 1.概述 1 1.1 奥运场馆室内覆盖的必要性 1 1.2 设计目的 1 2．设计依据和原则 1 2.1 设计依据 1 2.2 设计原则 1 2.3 奥运帆船场馆移动通信多系统室内覆盖的特殊性 2 3．工程环境 4 4．设计方案分析 5 4.1 话务量及不同区域数据流量需求的分析 5 4.2 接收场强及切换分析 6 5．工程要求 7 6.设计思路 8 7.工程实施方案 10 7.1有源设备 10 7.2射频连接器安装 10 7.3耦合器、功分器的安装 10 8.设备材料清单 14 结束语 15 参考文献 16 致谢 17 摘要 随着城市里移动用户的飞速增加以及高层建筑越来越多，话务密度和覆盖要求也不断上升。这些建筑物规模大、质量好，对移动电话信号有很强的屏蔽作用。在大型建筑物的低层、地下商场、地下停车场等环境下，移动通信信号弱，手机无法正常使用，形成了移动通信的盲区和阴影区；在中间楼层，由于来自周围不同基站信号的重叠，产生乒乓效应，手机频繁切换，甚至掉话，严重影响了手机的正常使用；在建筑物的高层，由于受基站天线的高度限制，无法正常覆盖，也是移动通信的盲区。另外，在有些建筑物内，虽然手机能够正常通话，但是用户密度大，基站信道拥挤，手机上线困难。特别是移动通信的网络覆盖、容量、质量是运营商获取竞争优势的关键因素。网络覆盖、网络容量、网络质量从根本上体现了移动网络的服务水平，是所有移动网络优化工作的主题。室内覆盖系统正是在这种背景之下产生的。 关键词：3G；乒乓切换效应；微蜂窝；射频拉远基站；青岛2008奥帆委 Abstract Mobile subscribers rapid increase as well as the high-rise construction are more and more many along with the city in, the telephone traffic density and the cover request also unceasingly rises. These building scales big, the quality is good, has the very strong shielding effect to the mobile phone signal. Under large-scale environment and so on building underlying bed, underground market, underground parking garage, the mobile communication signal is weak, the handset was unable normally to use, has formed the mobile communication blind spot and the shadow region; In among floor periphery, because comes from different base depot signal overlapping, has the pingpong effect, the handset frequent cut, even falls the speech, seriously has affected the handset normal use; In building high level, as a result of the base depot antenna high limit, is unable normally to cover, also is the mobile communication blind spot. Moreover, in some buildings, although the handset can the normal call, but user density big, the base depot channel is crowded, the handset makes something a matter of political line the difficulty. The specially mobile communication network cover, the capacity, the quality are the operation business gain competitive advantage key aspec