Radiowave Propagation in Office Buildings and Underground Halls

Radiowave propagation measurements at 1.7 GHz for indoor mobile systems are described. A coherent pulse measurement is used to measure path loss and complex power delay profile of the radio channel. The results show that path loss and delay spread are highly dependent on building architecture and materials. By introducing special attenuation factors for penetrated walls and floors a statistical path loss model is obtained which gives relatively good results in office environments with small rooms. For large rooms and open areas a conventional model with distance dependence works best. Delay spread is modelled by having the volume of the indoor environment as a model parameter.