论文信息 - Integrative modeling and analyses of the wireless link for communication system in railway environment

Integrative modeling and analyses of the wireless link for communication system in railway environment

The FDTD method and the ray-tracing method are combined to study the characteristic of the wireless link of railway communication system in 900 MHz band. FDTD method is used for computing field in near region where a more realistic high-speed railway environment including the locomotive, antennas, steel rails, earth plane and the conducting wire for power supply, is modeled in detail. The ray-tracing method is used for transformation field from far region to near region. The variations of the output voltage and current of the monopole antenna mounted on locomotive with the train location on railway are given. The objective of this paper is to study the relationship between the incident wave and the output voltage and current with the influence of the complicated high-speed railway environment considered.

Zheng Li | Junhong Wang | Shi Pu

[1] James G. Maloney,et al. A simple FDTD model for transient excitation of antennas by transmission lines , 1994 .

[2] Tian Fang. Improving the Subcell-FDTD Simulation Accuracy of the Currents in Conducting Thin-Wire , 2005 .

[3] Jun-Hong Wang. Research on the Radiation Characteristics of Patched Leaky Coaxial Cable by FDTD Method and Mode Expansion Method , 2008, IEEE Transactions on Vehicular Technology.

[4] Reinaldo A. Valenzuela,et al. Radio propagation measurements and prediction using three-dimensional ray tracing in urban environments at 908 MHz and 1.9 GHz , 1999 .

[5] W. C. Jakes,et al. Microwave Mobile Communications , 1974 .

[6] Ying Wang,et al. A hybrid technique based on combining ray tracing and FDTD methods for site-specific modeling of indoor radio wave propagation , 2000 .

[7] T. Rappaport,et al. A comparison of theoretical and empirical reflection coefficients for typical exterior wall surfaces in a mobile radio environment , 1996 .