Modelo matemático adaptado de pérdidas de trayectoria mediante el análisis de propagación en la banda de 850 MHz para una zona urbana de Quito

Abstract

Path-loss models are very used in radiant and wireless communications, since allow identify the degradation and the propagation of the signal transmitted in a means determined. In this paper, measurements of the power received in different points in an area of coverage knowing the features of the terrain, based in models existing of propagation, such as: space free model, Okumura’s model, Okumura-Hata’s model, Cost-231 model, Egli’s model, and Walfisch’s model for space free; to obtain the prediction of propagation of the signal in environments with line of sight (LOS) and without line of sight (NLOS) in the band of 928 MHz to 960 MHz for microcells. The method of Least Square Approximation was used for determine them coefficients of the equation of regression linear. Also, this paper find a methodology of measurement to determine the path-loss model that is adapted best to the conditions of measurements made by a method of adjustment.