Measurement and Modeling of LTE-Railway Channels in High-Speed Railway Environment

摘要

High-speed railway (HSR) is becoming one of the most effective and important transportation modes. To ensure the safety of HSR, a stable communication system is necessary. The understanding of propagation characteristics of radio channel is important for HSR communication system design. In this paper, a wideband measurement in suburban HSR scenarios at 460 MHz is presented. Some typical channel parameters such as the large-scale fading, Ricean K factor, power-delay profile, and root-mean-square delay spread are extracted from the measurement data. The different distributions of small-scale fading are also compared. The relationships between the channel parameters and the distance of transmitter (base station) and receiver are also explored. The results could provide a reference for the design and evaluation of HSR communication network, especially for the Long-Term-Evolution (LTE)-railway system.