Mobile Communications Convergence to LTE and LTE-A Systems of Fourth Generation

Abstract

This article presents a historical analysis of the vertiginous evolution that have had, and still have, the mobile
communication systems and their subjacent technologies. To begin with, a brief but didactic description of the technologies
associated to each of the generations that have appeared in terms of their chronological evolution is made, making clear
the implied benefits, as well as their main limitations which had led to other types of implementations aimed at improving
data transfer rates, the media management, and user’s mobility. Finally, a not very exhaustive, but sufficiently detailed
description for the understanding of the LTE technologies and their evolution towards “LTE- Advanced”, as references of
the fourth generation of mobiles (4G) is given. Currently, the most widespread, and on the basis of a marked process of
development and innovation.