An Improved Distributed Antenna System for High-Speed Railway
Due to the rapid development of high-speed railways all over the world,Railway digital mobile communication system is one of the most important parts which bears various services.However,it has been a challenge to support hi gh speed (e.g.,above 350 km/h) mobile user with broadband communication in a challenging environment including rapidly fading radio channels,Doppler frequency shift and fast handover problem.An Improved Distribution Antennas System for High-Speed Railway is proposed in this paper to solve the problem of fast handover in the traditional cellular network.The overlap region of two adjacent Logical Cells is com posed by a complete cell,which is named Fixed Handover Cell.Therefore,there is sufficient time to complete the handover.It can effectively avoid the occurrence of a ping-pongeffect.Its advantages include seamless handover,simple handover,and cost-effective deployment to support high mobility.
Railway digital mobile communication system Distributed Antenna System (DAS) Handover Fixed Handover Ceil
TANG He KONG Yong WANG Xiangrong TAN Zhenhui
Beijing Telecom Planning & Designing Institute Co.Ltd,Beijing 100044,P.R.China KYLAND Technology Co.Ltd,Beijing 100041,P.R.China Beijing Jiaotong University,Beijing 100044,P.R.China
国际会议
沈阳
英文
2238-2241
2012-09-26（万方平台首次上网日期，不代表论文的发表时间）