Studies of propagation loss in semi-confined environments using parabolic equations for large angles of propagation

In this article the propagation loss in mobile cellular systems in semi-confined environment using parabolic equations is studied. The proposed model uses approximations for small and large angles of propagation, with the paraxial direction and its results are validated through a campaign of measurement and the ray tracing model. The semi-confined environment is represented by a street with large trees and shaped by a set of rectangles (representing the buildings) and a set of dielectric cylinders (representing the trunks of trees). In the campaign of measurements was used the frequency of 890 MHz The results compared with the experimental results and by ray tracing model showed good agreement, with a less computational effort.