International Journal of Antennas and Propagation
Volume 2014, Article ID 642894, 9 pages
http://dx.doi.org/10.1155/2014/642894
Nonisotropic Scattering Characteristic in an Alternant Tree-Blocked Viaduct Scenario on High-Speed Railway at 2.35 GHz
1Institute of Broadband Wireless Mobile Communications, School of Electronics and Information Engineering, Beijing Jiaotong University, Beijing 100044, China
2National Mobile Communications Research Laboratory, Southeast University, Nanjing 210096, China
Received 3 October 2013; Revised 9 March 2014; Accepted 23 March 2014; Published 26 June 2014
Academic Editor: Felipe Cátedra
Copyright © 2014 Rongchen Sun et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
This paper presents the nonisotropic scattering characteristic of the mobile radio channel in an alternant tree-blocked viaduct scenario on high-speed railway (HSR) by real field measuring at 2.35 GHz. An angle of arrival (AOA) probability density function (PDF) is proposed for the nonuniform AOA at the mobile caused by stochastically distributed scatterers. Two Von Mises angular distributions with broad applicability are used to represent the line of sight (LOS) component and part of the scattering component in the AOA model. Based on such a PDF statistical characteristics of Ricean factor, , and AOA of the scattering component are modeled in LOS and obstructed line of sight (OLOS) cases, respectively. The results may give a meaningful and accurate channel model and could be utilized in HSR viaduct scenario evaluation.