高铁LTE室外站天线选型研究

Research on Antenna Selection of High-speed Rail LTE Outdoor Station

高铁场景下,车体穿透损耗较大,对信号强度要求较高。根据链路预算、高铁车体穿透损耗特点以及天线性能参数,对车体内信号强度进行预测,规划使用不同增益、不同水平波瓣宽度的天线。合理使用高增益天线可减小站间距,降低建设成本,也可增强基站覆盖,改善用户体验。

In the high-speed rail scenario,the penetration loss of the vehicle body is large and the RSRP is required to be high.According to the link budget,the penetration loss characteristics of the high-speed rail vehicle body and the antenna performance parameters,the RSRP in the vehicle body is predicted,and the antenna with different gain and different horizontal beam width is planned to be used.Rational use of high gain antenna can reduce the station spacing and construction cost.It can also enhance the coverage of the base station and improve the user experience.