Downlink Non-Orthogonal Multiple Access (NOMA) for 5G Wireless System: A Review
Keywords:
Non Orthogonal Multiple Access (NOMA), Fifth Generation, Spectral Efficiency, 5G Wireless SystemAbstract
To ensure the sustainability of mobile communication services in the coming decades, new technology solutions are being sought for the fifth generation (5G) and beyond 5G (B5G) cellular systems. In the view of the anticipated exponential growth of mobile traffic, these technologies are expected to provide significant gains in the spectral efficiency (and hence system capacity) and improved quality of user experience (QoE).
The non-orthogonal multiple access (NOMA) is considered as a promising multiple access technology for 5G systems. By scheduling multiple users over same spectrum resources but at different power levels, NOMA can yield a significant spectral efficiency gain and enhanced QoE when compared to traditional orthogonal multiple access (OMA) systems.
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