Authors
Chahe Nerguizian, Charles L Despins, Sofiène Affès, Mourad Djadel
Publication date
2005/9
Journal
IEEE Transactions on Wireless Communications
Volume
4
Issue
5
Pages
2441-2453
Publisher
IEEE
Description
This paper presents comprehensive experimental results obtained from narrowband and wideband radio-channel measurements in an underground mine with narrow veins at 2.4 GHz. From continuous-wave (CW) measurement data, large-scale distance-power curves and path-loss exponents of the environment are determined. Other relevant parameters, such as the mean excess delay, the maximum excess delay, the root-mean-square (rms) delay spread, and the coherence bandwidth are extracted from the wideband-measurement data. Results show a propagation behavior that is specific for these underground environments with rough surfaces. The rms delay spread does not follow a dual-slope relation with respect to distance, as in environments with smooth surfaces. Moreover, the dependence of the rms delay spread on the bidimensional position of the user is found to be very significant. For the majority of …
Total citations
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Scholar articles
C Nerguizian, CL Despins, S Affès, M Djadel - IEEE Transactions on Wireless Communications, 2005