Eficiência Energética em Redes de Sensores Two-Way com Seleção de Relays

This paper analyses the dependence between outage probability and energy efficiency in wireless sensors networks with relay selection procedures. Considering different criteria like the best use of network resources such as spectrum and energy, it is possible to imply which relay selection scheme is the most appropriate for each practical scenario, if a single relay or multiple relays is more suitable. Our numerical expressions for the associated outage probability and energy efficiency are pre- sented while numerical results obtained through computational simulations corroborate the mathematical expressions. Finally, implications about the best transmission scheme are offered for each network configuration discussed.