Abstract
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 DTD 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.
| Original language | English |
|---|---|
| Pages (from-to) | 1422-1430 |
| Number of pages | 9 |
| Journal | IEEE Transactions on Vehicular Technology |
| Volume | 51 |
| Issue number | 6 |
| DOIs | |
| Publication status | Published - 2002 Nov |
Bibliographical note
Funding Information:Manuscript received January 30, 2001; revised August 1, 2001, February 11, 2002, and June 13, 2002. This work was supported by the Walloon Region under Research Contract RW 971/3641 “PROMU—Propagation et modem pour l’UMTS.” The work of C. Oestges was supported by the Fonds National de la Recherche Scientifique (F.N.R.S.).
Keywords
- Communications system performances
- Ray tracing
- Wide-band radio channel measurements
ASJC Scopus subject areas
- Automotive Engineering
- Aerospace Engineering
- Electrical and Electronic Engineering
- Applied Mathematics