Wireless Beam Channel Measurement and Analysis for Railway Locomotive at 5.9 GHz

The proliferation of railway train not only accelerate the national economics greatly but also and growing communication demands of users pose new challenges for high-speed train (HSR) communication systems. In this paper, we conduct some beam channel measurements over a rail locomotive at 5.91GHz and 5.92GHz, respectively. We mainly focus on the propagation characteristics caused by different transceivers’ beam steering directions. Specifically, 3 key parameters are mainly investigated, i.e., the received power, frequency spectrum correlation coefficient, and quasi-stationarity region (QSR). The relevant results reveal that steering angles close to the reflected path yield high correlation coefficients with respect to the reflected path. Besides, a 2-dimensional Gaussian model presents good fitting performance for the beam steering-dependent received power, and a first-order linear model can depict the CDF of logarithmic QSR well. Our findings provide some insights to the railway-related wireless channel modeling.