摘要
研究目的:随着3G移动通信牌照的发放,已完成3G移动通信试验阶段试验,开始走向商用化。同时也需将3G移动通信系统引入到地铁内,但由于地铁内空间狭小,只能采用多网合一的方式。本文通过对3G移动通信几种引入地铁方式的论证和比较,提出一种比较适合的引入方式,并对其有关系统设备指标进行了阐述,有望为将3G移动通信系统引入地铁提供借鉴。研究结论:通过对3G移动通信引入地铁几种方式的分析和比较及现场实际测试,采用后端合路多通道方式引入地铁比较适用。为防止多网合一系统内多信号之间的干扰,提出POI的隔离度应达到一定的要求,同时3G系统可以在2G系统的基础上共用一套天馈系统,即节约投资又减少工程难度。
Research purposes： With issusing the licenses of the third generation mobile communication （3G）system, the test phase of the 3G system has been finished, and 3G system goes to commercial useage. Meanwhile, the 3G system has to be introduced into metro for communication. However, as the space in the metro underground station is narrow, irregular in shape, the scheme to combine multiple networks into one network is used for the 3G system. Throgh analysis and comparison of several optional schemes of introducing the 3G system into metro, this paper offers and introduces one appropriate scheme for providing the reference to introducing the 3G system into metro.
Research conclusions：From the analyses, comparisons and field tests of several optional schemes, it is concluded the 3 G system signals should be connected at end of POI. In the system of combining multiple networks into one network, in order to prevent the disturbances of signals each other, the insulation of the every network must be increased to meeting the requirement. The 3G system can use the antenna subsystem of 2G system to reduce the construction cost and construction diffichy.
出处
《铁道工程学报》
EI
北大核心
2009年第10期111-116,共6页
Journal of Railway Engineering Society
关键词
3G
引入地铁
多系统合路平台
场强覆盖
漏泄电缆
3G
metro
multiple networks combined implement（POI）
field strength cover
leakage cable
作者简介
陶孟华，1960年出生，男，高级工程师。
