Simulation and analysis of radio wave characteristics in terrestrial high-speed mobile environment

The finite states birth and death Markov chain is used to model the wireless propagation paths in land high-speed mobile environment.A more realistic terrestrial high-speed mobile radio propagation model is set up with the parameters of the real operation surroundings and conditions.Based on this model,the characteristics of radio propagation can be analyzed.In this paper,one simulation under the rural high-speed train scenario,where wireless coverage is provided by base station at every 3 kilometers interval and the link between the fixed base station and the moving train was typically a line-of-sight(LOS) type, is operated with the above model.Through the simulations at different velocities(300 km/h and 500 km/h), the changing link paths and their attenuation coefficients,delay times,Doppler spectrums and cross rate can be obtained.Moreover, this model is proved to be effective according to plenty of simulated data statistics.