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http://dx.doi.org/10.7782/JKSR.2013.16.6.460

Modeling of Train Radio Propagation Affected by Ground Reflected Wave in High-speed Railway  

Bae, Sung-Ho (Department of Railway Electrical and Signalling Engineering, Seoul National University of Science and Technology)
Song, Ki-Hong (Dong-Eui Institute of Technology)
Choi, Kyu-Hyoung (Department of Railway Electrical and Signalling Engineering, Seoul National University of Science and Technology)
Publication Information
Journal of the Korean Society for Railway / v.16, no.6, 2013 , pp. 460-465 More about this Journal
Abstract
Radio propagation in a high-speed railway is affected by ground reflective waves that are due to irregular reflection by the railway track, which consists of rails, sleepers, and gravel. This paper provides a train radio propagation model that simulates an irregular track reflective wave as a random variable. A simulation study using the train radio propagation model shows that the path loss exponent is around 3.0, indicating a reduced path loss compared to the value of 4.0 in the general mobile radio environment. Regressive analysis of the received signal strength indicators measured in the Gyeongbu high-speed railway showed the results identical to those of the simulation. These results confirm the train radio propagation model and can be applied to the coverage estimation and the design of a train radio network.
Keywords
Train radio; Ground reflected wave; Propagation model; Path loss exponent;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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