The Research Of Radio Wave Large-Scale Propagation Model Of High-Speed Railway

The model of GSM-R Large-Scale Propagation in the scenario of plain and viaduct has been initially established. Due to the limitation of terrains, our current model cannot be widely used, More experiments are wanted to be done in the scenario of urban areas, mountains and tunnels, so as to create a complete model parameters.Under such conditions, the development trend of wireless communications in High-Speed Railway and the principle of wave propagation will be firstly discussed in this article. The reason for the electric field intensity change will also be discussed. Due to the difference of terrains, a complete model of GSM-R Large-Scale Propagation in the form of logarithmic function will be given.According to the model needs, data has been collected since April2013in many new or existed High-Speed railways, including different level of lines and different terrains. In order to calculate the Large-Scale propagation model of High-Speed railway, the data has been classified and analyzed for modeling.