Title :
Improvement in a heuristic UTD diffraction coefficient for prediction of radio wave propagation
Author :
El-Sallabi, Hassan M. ; Vainikainen, Pertti
Author_Institution :
Radio Lab., Helsinki Univ. of Technol., Finland
Abstract :
Illumination of two sides of a wedge is quite common scenario for building corners in microcellular environment. Holm´s heuristic solution for the diffraction coefficient, which is an extension to Luebbers´ solution, is inaccurate in this region. This work avoids limitations of Holm´s diffraction coefficient in the illumination region when the source illuminates both faces of a wedge. The improved diffraction coefficient gives a result that is very close to Maliuzhinets´ rigorous diffraction coefficient. The improvement is valid for parallel and perpendicular polarizations.
Keywords :
geometrical theory of diffraction; microcellular radio; radiowave propagation; Holm´s diffraction coefficient; Luebbers´ solution; Maliuzhinets rigorous diffraction coefficient; heuristic diffraction coefficient; microcellular environment; parallel polarizations; perpendicular polarizations; radio wave propagation; Dielectric losses; Electromagnetic diffraction; Electromagnetic propagation; Electromagnetic scattering; Electromagnetic wave polarization; Laboratories; Lighting; Physical theory of diffraction; Radio propagation; Reflection;
Conference_Titel :
Vehicular Technology Conference, 2003. VTC 2003-Spring. The 57th IEEE Semiannual
Print_ISBN :
0-7803-7757-5
DOI :
10.1109/VETECS.2003.1207733
