mponent is ings is presented in [MeBe02]. The proposed formula- relatively small and only mean fields need to be considered tion is a combination of a street microcell model with a power law one that is valid in and around straight cor- ridor sections. The model has been validated by com- PL(d) = -105 75.0*log10(d), o = 2.2 dB paring it to path-loss measurements in a large office building with a complex topology. Narrowband mea- PL(d) 22.0*log10(d), o = 2.6 dB surements were performed at 5.2 GHz. The topology of the building was quite complex, consisting of several straight corridor sections, which were connected at 5.25 GHz crossings and turnings. The building was 70 m wide, 100 m long and five storeys high. The floors were made of 2.45 GHz reinforced concrete, while the outer walls were made of brick and reinforced concrete, and the inner walls be- PL(d) = 38.3 + 21.1 log10(d), o = 2.9 dB tween each room were made of double plaster board supported by vertical metal studs. The basic power law model does not account for indoor Distance from MS to BS (m) topologies with corridor segments which are connected at Figure 4.7-32 Rural path-loss models at 2.45 and 5.25 GHz crossings and turnings. The recursive model, however, was [LZMJO5]. designed for such topologies [Berg95]. By combining the Propagation modelling and channel characterisation CHAPTER 4.7 Table 4.7-6 Attenuation in hospital I at 2.45 GHz. Attenuation [dB] Window X-ray Operating Plasterboard Concrete Distance (m) Figure 4.7-33 Received power for the corridor-corridor class Technology, several results were derived [Geng05], [MeBe02]. Figure 4.7-34. In contrast to usual buildings, hospitals are partly power law model, and the recursive model, complex constructed of special walls with metallic layers inside. indoor environments can be easily modelled [MeBe02]. The wall structure depends on the kind of hospital room. By fitting the model parameters to the measurement Narrowband measurements in relevant areas of four data, path-loss exponents of 1.55, 2.7 an