Article Dans Une Revue IEEE Transactions on Antennas and Propagation Année : 2006

Characterization and modeling of temporal variations on an ultrawideband radio link

Résumé

The development of efficient ultrawideband (UWB) systems for high-rate wireless links requires an accurate knowledge of the radio propagation mechanisms. Anticipated usage scenarios in office or residential environments predict a significant impact of mobile persons on the UWB radio link. However, the issue of temporal variations in the UWB propagation channel has been scarcely investigated so far. This paper presents a study of the time variance of a UWB channel induced by the motion of people, with a specific focus on the main path of a line-of-sight radio link. A real-time measurement campaign involving moving scatterers was performed in the 4-5 GHz band, in a hallway of a typical office building. The analysis of measured data, regarding the shadowing effect and fast signal fluctuations, provides a detailed description of the phenomena involved in a time varying UWB channel. As a result, a model is described for the temporal variations observed on the main propagation path in a fixed UWB link, accounting for both the nonstationary attenuation due to obstructing people and the small-scale signal variations due to scattered propagation paths.

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Dates et versions

hal-02316321 , version 1 (27-02-2026)

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Patrice Pajusco, Pascal Pagani. Characterization and modeling of temporal variations on an ultrawideband radio link. IEEE Transactions on Antennas and Propagation, 2006, 54 (11-1), pp.3198 - 3206. ⟨10.1109/TAP.2006.883961⟩. ⟨hal-02316321⟩
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