Análisis de Sistemas MIMO para comunicaciones inalámbricas de 4 Generación

Abstract

The multipath propagation was considered a problem at first, but in the wake of systems involving multiple input multiple output (MIMO) is achieved to change the problem into a solution to limitations on transmission capacity. For this the use of parallel transmission channels is enabled by increasing the number of transmit antennas and / or reception. In this way it is possible to have high spectral efficiencies in the radio channel constituting therefore a very promising way to meet both the requirements of the current generation (4G) mobile communication systems and new architectures Voice over LTE (VoLTE). This thesis presents the basic concepts necessary for the understanding of MIMO systems and the new 4G mobile communication systems. New architectures in the process of implanting (VoLTE) are introduced, so that not only the paper presented is understood from the point of view theoretical but also display the real impact of these today. The transmission rates and prior knowledge of the channel quality are critical. The thesis focuses on improving understanding and to analyze rigorously systems distributed MIMO (D-MIMO). Those systems are used in current and future generations of mobile communications. Specifically important results are presented in the study of distributed systems channel (3 papers published) and studies of radiant systems of the new generation (2 papers published).