Otimização de recursos energéticos em sistemas SC-FDMA com garantias de QoS e satisfação

Abstract

This paper proposes an optimal solution to the frequency and power resource allocation employing Single Carrier - Frequency Division Multiple Access (SC-FDMA) such as in Long Term Evolution (LTE). The main objective is to minimize the total transmitted power in a cellular and multiservice system with constraints on the percentage of users that should be satisfied per service. Through algebraic manipulations we were able to convert an integer nonlinear optimization problem in an Integer Linear Problem (ILP) so as to obtain the optimal solution. Results of computer simulations show the importance of adaptive power allocation in the context of wireless cellular networks.