高速铁路CDMA无线网络覆盖研究与实践  

Research and Practice of CDMA Wireless Coverage of High-Speed Railway

作　　者：张煜[1] 尹程[2] 王颖莹[1] 

机构地区：[1]中国石化集团河南石油勘探局通信公司,河南南阳473132 [2]南京邮电大学通信与信息工程学院,江苏南京210000

出　　处：《通信技术》2012年第12期121-123,共3页Communications Technology

摘　　要：结合高速铁路用户终端与陆地基站通信特点,分析了车体的穿透损耗、铁路沿线话务量特点、高速运动中的多普勒效应、终端高速移动过程中的通讯切换等问题,提出了高速铁路沿线CDMA网络覆盖建议,并结合反向链路预算对不同场景提出建设站点建议。建立了系统容量的数学模型,对系统容量做了中长期规划。对建设完成后的沪宁城际高速铁路CDMA无线网络覆盖情况,并对EVDO数据性能和语音性能进行了测试分析。Combined with the communication characteristics between the users inside the train and the basic station, the penetration loss of the train body, the traffic capacity along the high-speed railaway, the Doppler effect and mobile communication switch in high-speed movement are analyzed, and the coverage suggestions of CDMA network along the high-speed railway are presented. Combined with reverse link budget for different scenarios, the recommendations for station construction are also proposed. Meanwhile, the mathematical model of the system capacity is formulated, the medium-and long-term system capacity planning also done. Finally the coverage situation of the commercial inter-ciW high-speed railway between Shanghai and Nanjing is discussed in detail.

关 键 词：高速铁路 CDMA网络覆盖 链路预算 容量规划 

分 类 号：TN929[电子电信—通信与信息系统]