Title :
A ray launching method for radio-mobile propagation in urban area
Author :
Rossi, J.P. ; Bic, J.C. ; Levy, A.J. ; Gabillett, Y. ; Rosen, M.
Author_Institution :
CNET, Issy-les-Moulineaux, France
Abstract :
A computer code based on digitized terrain data was developed to estimate path losses and selectivity characteristics of the urban radio channel between a mobile located in a street and a base station on the roof of a high building. The principle of the program consists in a ray launching in projection on the horizontal plane supplemented by third-dimension considerations. Some simulated results are presented and compared with actual measured data. The computed mean impulse response is always in good agreement for the first delay paths. A significant discrepancy can arise for long delay paths, but realistic features are always observed.<>
Keywords :
delays; geometrical optics; mobile radio systems; radiowave propagation; transient response; UHF; base station; digitized terrain data; high building roof; horizontal plane; long delay paths; mean impulse response; mobile radio; path loss estimates; radiowave propagation; ray launching method; selectivity characteristics; urban area; urban radio channel; Base stations; Cities and towns; Electromagnetic scattering; Mobile computing; Predictive models; Ray tracing; Statistics; UHF measurements; UHF propagation; Urban areas;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1991. AP-S. Digest
Conference_Location :
London, Ontario, Canada
Print_ISBN :
0-7803-0144-7
DOI :
10.1109/APS.1991.175146
