Journal ArticleDOI
A new heuristic UTD diffraction coefficient for nonperfectly conducting wedges
TLDR
In this article, a new heuristic UTD diffraction coefficient for non-perfectly conducting wedges is proposed, which is an extension of the heuristic one given by Luebbers (1984) and as simple as that to compute.Abstract:
A new heuristic UTD diffraction coefficient for non-perfectly conducting wedges is proposed. The coefficient is an extension of the heuristic one given by Luebbers (1984) and as simple as that to compute. In the case of forward-scattering and neglecting the surface wave effects, the new coefficient gives a result close to Maliuzhinets's (1958) solution, also deep in the shadow region where the previous one fails. Moreover, it makes the special care used by Luebbers to deal with grazing incidence unnecessary.read more
Citations
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Journal ArticleDOI
Ray Tracing for Radio Propagation Modeling: Principles and Applications
Zhengqing Yun,Magdy F. Iskander +1 more
TL;DR: The basic concepts of rays, ray tracing algorithms, and radio propagation modeling using ray tracing methods are reviewed to envision propagation modeling in the near future as an intelligent, accurate, and real-time system in which ray tracing plays an important role.
Journal ArticleDOI
The Design and Applications of High-Performance Ray-Tracing Simulation Platform for 5G and Beyond Wireless Communications: A Tutorial
TL;DR: This tutorial will be especially useful for researchers who work on RT algorithms development and channel modeling to meet the evaluation requirements of 5G and beyond technologies.
Journal ArticleDOI
Measurement and Analysis of Propagation Mechanisms at 40 GHz: Viability of Site Shielding Forced by Obstacles
TL;DR: In this article, the viability of applying site-shielding techniques to systems operating in frequency bands around 40 GHz is investigated, including transmission across building obstacles, depolarization, reflection, and diffraction.
Journal ArticleDOI
Efficient Multielement Ray Tracing With Site-Specific Comparisons Using Measured MIMO Channel Data
TL;DR: Results indicate that the ray-tracing model successfully predicts key channel parameters (including MIMO channel structure) and thus enable the accurate prediction of PER and service coverage for emerging MIMo-OFDM networks such as 802.11n and 802.16e.
Journal ArticleDOI
Indoor Propagation Channel Simulations at 60 GHz Using Point Cloud Data
TL;DR: The implementation for predicting both specular reflections and diffraction as well as the total channel, including the aforementioned mechanisms along with scattering and shadowing are presented, showing excellent agreement between prediction and measurement.
References
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Journal ArticleDOI
Geometrical Theory of Diffraction
TL;DR: The mathematical justification of the theory on the basis of electromagnetic theory is described, and the applicability of this theory, or a modification of it, to other branches of physics is explained.
Journal ArticleDOI
A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface
R.G. Kouyoumjian,P.H. Pathak +1 more
TL;DR: In this article, a compact dyadic diffraction coefficient for electromagnetic waves obliquely incident on a curved edse formed by perfectly conducting curved plane surfaces is obtained, which is based on Keller's method of the canonical problem, which in this case is the perfectly conducting wedge illuminated by cylindrical, conical, and spherical waves.
Book
Introduction to the Uniform Geometrical Theory of Diffraction
TL;DR: A text for senior undergraduate or beginning graduate students, as well as practicing engineers, that bridges the gap between specialist papers and the use of GTD in practical problems is presented in this paper.
Journal ArticleDOI
Finite conductivity uniform GTD versus knife edge diffraction in prediction of propagation path loss
TL;DR: In this paper, the authors proposed to apply wedge diffraction in the format of the geometrical theory of diffraction (GTD), modified to include finite conductivity and local surface roughness effects.
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A uniform geometrical theory of diffraction for an edge in a perfectly conducting surface
R.G. Kouyoumjian,P.H. Pathak +1 more