Conference Proceeding

Verifying path loss and delay spread predictions of a 3D ray tracing propagation model in urban environment

Nokia Res. Center, Espoo, Finland
Vehicular Technology Conference, 1988, IEEE 38th 02/2002; DOI:10.1109/VETECF.2002.1040665 ISBN: 0-7803-7467-3 pp.2470 - 2474 vol.4 In proceeding of: Vehicular Technology Conference, 2002. Proceedings. VTC 2002-Fall. 2002 IEEE 56th, Volume: 4
Source: IEEE Xplore

ABSTRACT In this paper path loss and delay spread predictions of a 3D ray tracing software are compared to wideband radio channel measurements made in Helsinki city center. Measurements were carried out in the 2 GHz band by using a wideband radio channel sounder, which gives out complex channel impulse responses. Reference delay spreads were obtained from power delay profiles, and path losses were available after appropriate cable calibration measurements. Comparisons between measurement and propagation predictions were made in cases where a realistic directional BS antenna was placed (a) slightly below the rooftop level and (b) slightly above the rooftop level. For propagation modeling a fully 3D ray optical model was used.

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Keywords

3D ray optical model
 
3D ray tracing software
 
appropriate cable calibration measurements
 
complex channel impulse responses
 
delay spread predictions
 
Helsinki city center
 
Measurements
 
path losses
 
power delay profiles
 
propagation modeling
 
propagation predictions
 
realistic directional BS antenna
 
Reference delay spreads
 
rooftop level
 
wideband radio channel measurements
 
wideband radio channel sounder