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Sparse or Dense: A Comparative Study of Code-Domain NOMA Systems
[article]
2020
arXiv
pre-print
This paper is focused on code-domain non-orthogonal multiple access (CD-NOMA), which is an emerging paradigm to support massive connectivity for future machine-type wireless networks. We take a comparative approach to study two types of overloaded CD-NOMA, i.e., sparse code multiple access (SCMA) and dense code multiple access (DCMA), which are distinctive from each other in terms of their codebooks having sparsity or not. By analysing their individual diversity orders (DO) in Rayleigh fading
arXiv:2009.04148v1
fatcat:fpawzl7ngbh3dbrf73vewjjvia