Channel characterization in a tall building with an externally located transmitter

This paper presents results of experiments on characterization of wireless channels inside a tall building in Hung Hom, Hong Kong with the transmitter located atop the DE Block of the Hong Kong Polytechnic University and the channel measurements are made inside a nearby tall residential building. The channel probing signal centered at 1.8 GHz had a bandwidth of 60 MHz. The results were analyzed for impulse response parameters like mean delay spread, average delay and significant number of paths. The collected data are also analyzed for autocorrelation and power spectral density. It is observed that the wireless channel character varies from location to location within the building on the same floor. It is found that the orientation of the measurement location with respect to the transmitter has a significant impact on the channel impulse response.