Yunshui Zheng,Zhongqing Wu This email address is being protected from spambots. You need JavaScript enabled to view it.,Junting Lin

School of Automation & Electrical Engineering, Lanzhou Jiaotong University, Lanzhou, China.


 

Received: January 14, 2019
Accepted: November 23, 2019
Download Citation: ||https://doi.org/10.6180/jase.202003_23(1).0005  

ABSTRACT


Due to the particularity of radio wave propagation characteristics in railway scenarios, the relationship between the scenarios and radio wave propagation loss has yet to be studies. In this paper, several common wireless channel path loss models of public network and the path loss measurement data of railway deep cutting scenarios are compared and analyzed, the correlation degree between the structural parameters and the path loss exponent of cutting scenarios is calculated, and the correlation between the parameters of cutting scenarios and ideal cutting scenarios is analyzed. The preliminary conclusion is that the Hata model in open ground environment conforms better to the path loss characteristics of the high-speed railway’s cutting scenario. The width of width sum and the width difference between crown and bottom of cutting scenarios are closely related to the path loss exponent. And the path loss exponent is more reasonable when the cutting scenarios parameters are within a certain range. The research results have some guiding significance for the collaborative work between cutting scenarios construction and wireless network construction.


Keywords: cutting scenario; path loss model; path loss exponent; grey relational algorithm



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