Formatação de feixes para redes de comunicações energizadas por meio sem fio

Abstract

In this work, a Wireless Powered Communication Network (WPCN) configuration that uses Non Orthogonal Multiple Access (NOMA), Energy Beamforming and the imperfectly modeled Successive Interference Cancellation (SIC) process was oriented. The system model employs the Harvest-then-transmit protocol that separates time into two phases: energy transfer in phase 1 and information transmission in phase 2. In phase 1, the terminals uniformly arranged in a circular cell store the energy that was transmitted in the downlink by the Power Beacon that uses Energy Beamforming. In phase 2, the terminals transmit their information via uplink to an access point (AP) present in the cell that performs the SIC process. In this study, an exact optimization technique was employed and a heuristic was developed. The simulation results of the two techniques showed that the proposed heuristic generated an increase in the data rates received by the AP.