Ergodic Sum Rate Analysis for Non-Orthogonal Multiple Access Relaying Networks with Energy Harvesting

I155 this paper, non-orthogonal multiple access (NOMA) is applied to downlink energy harvesting (EH) relaying networks. The ergodic sum rate for the NOMA-EH relaying networks is studied and closed-form expression for the tight upper bound of the ergodic sum rate is obtained. In addition, the presented simulation results demonstrate the effectiveness of our analysis and the advantage of NOMA over conventional orthogonal multiple access (OMA).