Extended Walfisch-Bertoni propagation model to cover short range and millimeter-wave bands

摘要

Extending the frequency range of the Walfisch-Bertoni (W-B) model, which is a representative theory-based model, was investigated. To extend the W-B model, three changes to the original W-B model were made: (i) remodeling over rooftop path, (ii) introducing a slant path, and (iii) modeling of multiple reflections between buildings. To validate the proposed model, propagation loss predicted by the model was compared with measurement results. Comparison with the measurement results shows that root mean square errors of propagation loss predicted by the proposed model are 5.8 dB for radiowave frequency of 2.2 GHz, 6.6 dB for 5.2 GHz, and 3.3 dB for 26.4 GHz. It is therefore concluded that the proposed model has can achieve high estimation accuracy for all measured frequency bands.