Statistical modelling of a radio propagation channel in an underground mine at 2.4 and 5.8 GHz

This paper reports on the statistical modelling of a wideband radio propagation channel in an underground mine at 2.4 and 5.8 GHz. Both LOS and NLOS areas are considered. The amplitude for the paths of the experimental impulse responses is compared to the Rayleigh, Rice, Nakagami, Weibull and lognormal distributions. The arrival-time of these paths is compared to the Poisson, modified Poisson and Weibull distributions. The phase is considered a priori to be uniformly distributed. After comparing the experimental impulse responses to those generated by many simulations (based on the RMS delay spread), the best amplitude model is found to be Rice for LOS and Rayleigh for NLOS, and the best arrival-time model is modified Poisson, regardless of the frequency.