Doppler analysis of an indoor university-hall

An analysis of delay-Doppler characteristics in the presence of moving people is presented for short-range communications in an indoor environment. Channel sounding measurements have been carried out at 3.6 GHz in a crowded university-hall during short and long breaks between courses. The measurements reveal a difference between the RMS Doppler spread of both breaks, indicating a distinctive power distribution of their Doppler spectra. In addition, there is a significant contrast between the Doppler characteristics of the co- and cross-polarizations. Looking at the behavior of both the Doppler- and RMS Doppler spread, we also highlight the importance of characterizing multipaths in the environment.