Analysis of the Cooperative NOMA performance systems with Energy Harvesting strategies

In this paper, we propose a novel wireless-powered hybrid (downlink and uplink) NOMA system to enable uplink NOMA transmission. By means of harvested energy from radio frequencies, two scenarios are proposed to feed energy to NOMA users. In the first scenario a power beacon transmit energy signal to different NOMA users, such users deploy harvested energy to transmit their own information signals in uplink to the base station. However in the second scenario, the base station transmit information signal in downlink to the users in the first time, then the base station feeds the users in the second time, in the third time users transmit their own information signals in uplink to the base station.