Improving the Accuracy of Ray Tracing Estimation Considering Inhomogeneous Building Surfaces in Urban Environments

Jae-Woo LIM  Il-Suek KOH  Youn-Hyun PARK  Hyun-Wook MOON  Han-Shin JO  Jong-Gwan YOOK  Yong-Joong YOON  

IEICE TRANSACTIONS on Communications   Vol.E91-B   No.12   pp.4067-4070
Publication Date: 2008/12/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e91-b.12.4067
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Antennas and Propagation
UTD,  ray tracing,  scattering,  

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To improve path loss estimation, a ray tracing method for inhomogeneous building surfaces and its verification are presented in this paper. Considering real building surfaces with many heterogeneous materials, the effective specular reflection based on a physical optics (PO) approximation is modeled and applied to the reflection in a ray tracing method. To verify the proposed method, measurement at 2.7 GHz is performed in a complex urban environment. Comparisons between the measurements and the ray tracing results are made in LOS and NLOS environments.