26GHz ray-tracing pathloss prediction in outdoor scenario in presence of vegetation

In this paper 26GHz propagation in outdoor urban environment is investigated using path-loss measurements and ray-tracing simulation. The impact of advanced implementations such as diffuse scattering and vegetation attenuation is verified versus measurements in an outdoor scenario. The results show that the contribution from non-specular components in non-line-of-sight conditions is much more important than expected to achieve a good prediction accuracy at this frequency band. Moreover, vegetation attenuation is also very relevant and can be modeled using a simple, specific attenuation formula. Despite some deficiencies in the input database, the prediction accuracy is good and simulations are generally able to track the measurements behavior.