Experimental comparison of indoor UHF and EHF radio channel characteristics

This paper reports experimental results obtained for narrowband and wideband indoor radio channels at 893 MHz and 37.2 GHz, respectively. Under LOS conditions and same scenarios, the multipath channel characteristics for both frequency bands are compared in terms of distance-power law exponents and cumulative distribution functions (CDF) of the CW measurement data, and root-mean-square (RMS) delay spreads of the impulse responses measurements. The results show the effect of the carrier frequency on the multipath phenomenon, either by sustaining the signal power level leading to a propagation loss less than that of the free space, or by increasing the RMS delay spread which limits the channel capacity