某铁路车辆段毫米波信道测量
Millimeter Wave Channel Measurements in a Railway Depot
摘要：
毫米波（mmWave）通信是一种关键的使能技术，具有为未来铁路服务提供高容量、高峰值数据率通信的潜力。了解无线电特性对于成功部署这种系统至关重要。在本文中，毫米波信道测量报告的铁路环境中使用的宽带信道探测器工作在60 GHz。高定向天线部署在链路的两端。报告了路径损耗、均方根（RMS）延迟扩展和K因子的数据。静态和移动测量被认为是。分析表明，信号强度强烈依赖于（高达25 dB）的定向发射和接收天线的方位角取向。从具有最佳对准天线的视线测量中提取n=2.04的路径损耗指数。RMS延迟扩展范围为1 ns至22 ns，具体取决于天线对准。发现50%的测量K因子小于6dB。我们得出结论，这是在垂直Tx-Rx平面地面反射的结果。
英文摘要：
Millimeter wave (mmWave) communication is a key enabling technology with the potential to deliver high capacity, high peak data rate communications for future railway services. Knowledge of the radio characteristics is of paramount importance for the successful deployment of such systems. In this paper mmWave channel measurements are reported for a railway environment using a wideband channel sounder operating at 60GHz. Highly directional antennas are deployed at both ends of the link. Data is reported for path loss, root mean square (RMS) delay spread and K-factor. Static and mobile measurements are considered. Analysis shows that the signal strength is strongly dependent (up to 25dB) on the azimuth orientation of the directional transmit and receive antennas. A path loss exponent of n=2.04 was extracted from the Line-of-Sight measurements with optimally aligned antennas. RMS delay spreads ranged from 1ns to 22ns depending on antenna alignment. 50% of the measured K-factors were found to be less than 6dB. We conclude this is the result of ground reflections in the vertical Tx-Rx plane.
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