ESTUDIO DEL MODELO DEL CANAL DE COMUNICACIÓN DE REDES PLC DOMESTICAS CONSIDERANDO EL CASO NO UNIFORME

Abstract

ii ABSTRACT A brief introduction to the PLC (Power Line Communications) Systems, providing a general description of the general work and the different elements that compose the systems are presented in this Thesis. A review of several fundamental concepts of the Theory of Transmission Lines is carried out, with the purpose of describing some important characteristics of the behavior of the signals, as attenuations, reflections, propagation velocity, etc., all of them are necessary to get an understanding about the propagation of the signal in the power line for a best understanding different models of analysis of the power line channel and this way to develop a new model based in these concepts, considering different models developed in the literature. As a contribution of this thesis, we consider a model of analysis in which the power lines in-home are not uniform, especially in their composition and geometry. The difference of the model presented in comparing with the models in the literature consists in that all of them are uniform models. In order to validate the model here presented, several measurements of transfer function were made in power line inside a conduit, in which was connected different appliance loads. A comparative between the results in the no uniform transmission line was made on the proposed model and the results was compared with different models found in the literature, besides the results of the experimental measurements was compared with the theoretical results via some statistical concepts as the correlation factor and root mean square error.