Theoretical and experimental investigation of radio propagation into buildings

The increased demand for personal communications systems (PCS) has enhanced the need for radio propagation models since propagation information is needed for both system design and deployment tools. This paper presents a novel modelling approach to predict the field distribution and the path loss of radiowave propagation into buildings. This site-specific approach, which uses a new representation of magnetic dyadic Green's function for a rectangular cavity and the superposition theory, enables us to calculate the field distribution on three-dimensional contours and the path loss due to the construction of the building and the radiation pattern of the base antenna. Furthermore, the polarisation information at the site can also be obtained. Because the representation of the Green's function consists of rapidly convergent series, the computation is highly effective. The computed results are then compared with the measured results taken in BT Labs, and a good agreement between the them has been observed. (6 pages)