PCS ray characteristics between multiple floors of a concrete building

A wide band channel sounder with 10 ns resolution has been used to measure impulse responses at 1890 MHz on 4 different floors of a 6 storey university building. The transmitter location was on the top floor near an outside window with a view to nearby campus buildings. Measured power delay profiles (PDPs) were processed to identify the individual rays, within the resolution of the sounder. The distribution of RMS delay spreads are found to be quite different for the transmitter floor, compared with the lower floors, where delay spreads are up to 8 times as large. The distributions of the number of rays per PDP for different thresholds are given for each floor, and the distribution of rays in time and amplitude bins is also given. A measurement based statistical model is investigated, and used to generate Monte Carlo simulations of many PDPs. The cumulative distribution of the simulated RMS delay spreads are compared with the measurements