The asymptotic high frequency techniques, based on the Geometrical Optics (GO), the
Geometrical Theory of Diffraction (GTD), and its extension such as the Uniform Theory of …

A fundamental approach in the optimal design of wireless communication systems is a
proper comprehension of radio wave propagation through wireless channels. As wireless …

This paper deals with the efficient combination of two well-established electromagnetic
methods, a shooting and bouncing Rays (SBR) algorithm on the basis of geometrical optics …

Techniques of radio propagation modeling and simulation are briefly reviewed, and the
advantages of ray tracing methods are discussed. Spatial division methods are employed to …

With the advances in computer processing that have yielded an enormous increase in
performance, numerical analytical approaches based on electromagnetic theory have …

A MATLAB-based tool, GO+ UTD, is presented with a user-friendly graphical user interface
(GUI) for the simulation of electromagnetic wave propagation and diffraction effects over …

A new 3D ray-tracing technique, based on the Angular Z-Buffer algorithm,[1] to speed-up
reflection calculations is presented. The technique can be applied to the analysis of …

The application of several ray-tracing techniques, in combination with GTD/UTD
(geometrical theory of diffraction/uniform theory of diffraction), for an efficient analysis of …

The next generation of cellular network deployment is heterogeneous and temporally
changing in order to follow the coverage and capacity needs. Active Antenna Systems …

The results obtained with a two-dimensional (2-D) propagation model for wireless
communications in an urban environment are compared against the results of other …