Mobile propagation path loss models for suburban areas using type-2 fuzzy logic approximation

This paper presents a type-2 fuzzy logic system to predict path loss in cellular mobile communication system. The propagation mediums are classified into two environment of terrain defined as suburban house density and tree density. The environment terrain is classified into flat area terrain, light tree terrain, heavy tree terrain and village terrain respectively. These data from the environment terrain transfer to the type-2 fuzzy logic system. Once the rules have been established, the type-2 fuzzy logic system can be viewed as a mapping from environment terrain inputs to path loss outputs. From the prediction, the results obtained have shown that the ability of type-2 fuzzy logic system to predict more accurate prediction of strength loss than that of conventional Hata´s model.