Abstract
AbstractTwo new multiple access technologies in future wireless networking requirements for the effective use of bandwidth, non-orthogonal multiple access (NOMA) and Cognitive Radio (CR). The NOMA is one of the most promising performance improvement methods in new generation cells and CR will make the most of dynamic spectrum access and diversity throughout the broad spectrum possible, to alleviate the spectrum scarcity problem and meet the huge demands for wireless connectivity. This article discusses the basic principle of NOMA, cognitive radio fundamentals, spectrum sharing way, and the advantages and challenges of CR and NOMA spectrum sharing.KeywordsNon-Orthogonal Multiple Access (NOMA)Orthogonal Multiple Access (OMA)Cognitive Radio (CR)
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