Slant path rain attenuation synthesizers for tropical and equatorial regions

Parameters for the three models were obtained for sites in Brazil. The models were tested and RMS errors presented. Although most part of the results is still under analysis, an important conclusion is that the models are applicable to tropical and equatorial climates. Some high RMS errors can be probably reduced by more accurate choice of parameters and careful events database maintenance. Although lognormal is usually not the most indicated distribution to fit attenuation CCDF for these climates, results for E.M-B model do not greatly differ from the ones found for temperate climates. Event-on-demand performance is expected to profit from a more accurate experimental events database and a possibly better β assessment. Overall, results are quite encouraging to keep developing and understanding the behavior of the models.