Experimental study of fading characteristics for wireless communications in high-speed railway environments

This paper presents the fading characteristics for wireless communication system in the 2.5GHz band over THSR environment. Based on measurement results, we propose the propagation model and conduct a field trial to investigate the effects of Mobile WiMAX system performances in moving train. The result in downlink TCP throughput shows that the throughput will rise again when the train is passing across bent area. It indicates that the reflecting wave in bent area is disappearing. The propagation loss returns to the free space loss. Our proposed model can not only predict the propagation loss for the cell planning but also observe the effects of wireless communication systems for high-speed railway environments.