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Radio Channel Characterization for Moderate Antenna Heights in Forest Areas

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3 Author(s)
Oestges, C. ; Microwave Lab., Univ. catholique de Louvain, Louvain-la-Neuve, Belgium ; Villacieros, B.M. ; Vanhoenacker-Janvier, D.

This paper describes the results achieved by an experimental campaign whose goal was to characterize the directional propagation channel at 1.9 GHz in forested areas for moderate antenna heights. These experimental results are useful in the context of pedestrian radio-localization systems relying on cellphone signals. Wideband experimental results, which are recorded with transmit-to-receive distances ranging from 40 to 110 m, indicate that the path loss is well modeled by ITU-R Recommendation 833-4. The temporal fading and multipath dispersion are also analyzed. The delay spread, which ranges from 60 to 120 ns, is strongly anticorrelated with the temporal coherence and increases with transmit-to-receive distance. The azimuth spread remains limited, with average values of about 15deg.

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Vehicular Technology, IEEE Transactions on  (Volume:58 ,  Issue: 8 )