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We show a significant discrepancy between the range estimates and the actual performance of an ultrawideband wireless system based on the Wimedia standard. We also show this discrepancy to be linked to the combination of frequency selectivity of the ultrawideband channel and the low dynamic range available to ultrawideband receiver. We propose an alternative means of range estimation combining the...
The frequency-dependent pathloss characteristics of an indoor radio channel are investigated over the FCC-allocated ultrawideband (UWB) frequency range (3.1?10.6 GHz). Complex channel transfer functions are measured under a variety of propagation conditions. The dispersion index is introduced as a measure of the frequency-dependence pathloss and is estimated for each measured channel response. Its...
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