Overlay Network with Non-orthogonal Multiple Access and Energy Harvesting: Performance Evaluation

This paper studies an overlay network with non-orthogonal multiple access (NOMA) wherein the far-licensed NOMA user is assisted by either the near-licensed NOMA user or the unlicensed source to maintain its communications with the licensed NOMA transmitter. Both the near-licensed NOMA user and the unlicensed source implement practical nonlinear energy harvesters to meliorate energy efficiency. The performance metrics of the proposed overlay network with NOMA and EH (ONwNOMAEH) such as energy efficiency, system throughput, and outage probability are analysed in an explicit form. Multiple results expose the effectiveness and the flexibly adjusted performance of the proposed ONwNOMAEH.