摘要
简要介绍了高铁通信遇到的特殊环境技术问题,如快速功控失效、无线信号包络莱斯分布、多普勒效应使基带信号频谱展宽、车厢窗户穿透损耗和入射角损耗加大、智能天线作用受限、小区硬切换信令开销增大等,并提出了适于高铁通信的无线覆盖方案。
It takes tests on videophone call receding in WCDMA network,and analyzes the failure causes of call receding,including terminal and network causes.Around the receding failure issues,it gives suggestions on network optimization.
出处
《邮电设计技术》
2010年第6期1-4,共4页
Designing Techniques of Posts and Telecommunications
关键词
高铁
移动通信
功控失效
莱斯分布
基带展宽
损耗加大
High-speed railway
Mobile communication
Power control failure
Rician distribution
Baseband broaden
Loss increase
