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Deterministic channel modeling and performance simulation of microcellular wide-band communication systems

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4 Author(s)
Oestges, C. ; Microwave Lab., Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium ; Clerckx, B. ; Raynaud, L. ; Vanhoenacker-Janvier, D.

To evaluate the performance of future microcellular IMT-2000 modems, simple physical models are required, so that a number of system characteristics, such as the signal bandwidth, the antenna beamwidth, or the base station height can be accounted for at a limited computational cost. This paper describes a deterministic three-dimensional electromagnetic model, which allows simulation of the radiowave propagation for microcellular wide-band communication systems in urban areas. The model is based on a UTD ray-tracing tool and makes use of an improved mirror method. Simulated power-delay profiles are plotted against measured power-delay profiles recorded at 1.87 GHz in a street of Louvain-la-Neuve, Belgium, by means of an 80-MHz channel sounder. Despite several discrepancies, a satisfying matching is found considering three orders of reflection and single diffraction. Predictions of rms delay-spread accounting for the sounder limited bandwidth are presented. Finally, simulated and measured channels are also compared through the resulting performance of a typical IMT-2000 service in the presence of multiple access interference.

Published in:

Vehicular Technology, IEEE Transactions on  (Volume:51 ,  Issue: 6 )

Date of Publication:

Nov 2002

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