Summary
International Symposium on Antennas and Propagation
2012
Session Number:2C1
Session:
Number:2C1-5
Numerical Estimations of the Propagation Characteristics of Wireless Links in High-speed Train Cars
Takashi Hikage, Masami Shirafune, Toshio Nojima, Wataru Yamada, Takatoshi Sugiyama,
pp.-
Publication Date:2012/10/29
Online ISSN:2188-5079
Summary:
This paper evaluates the propagation characteristics in a High-Speed Train Car. Demand for wireless broadband access services in long-distance transportations continues to grow. Several railway companies have recently begun in-car wireless LAN services. In order to advance the radio link design in support of such services, an accurate and reliable method for estimating the electromagnetic environment in actual situations is required. This study introduces an accurate and reliable method of estimating electromagnetic field distributions in train cars so as to advance the radio link design of wireless LANs operated inside high-speed train cars. The authors previously proposed an EMF estimation method for a typical commuter train based on FDTD analysis and parallel computing. Using newly developed numerical models of high-speed train car, which include many passengers, electromagnetic field distributions created by a 5.2 GHz wireless transmitter inside the cars are analyzed and propagation characteristics are evaluated. In order to estimate the effect of the absorption by the passengers' bodies, simplified histograms of the electric field distributions throughout the whole interior of the car are derived.