Abstract
Sixth generation 6G (Sixth Generation) wireless communication systems are the most popular direction of articles and literature. The main interest is the future standard of the 3GPP project, which defines the key technologies that will be used in the new generation of wireless communication systems. NOMA (Non-orthogonal multiple access) technology is one of the fundamental technologies for 6G systems. Using NOMA technology, it is possible to implement the concept of "Massive connectivity" for 6G systems, which assumes the provision of high capacity of future communication systems and more efficient use of the radio frequency spectrum. There are several schemes for organizing multiple NOMA access. The most promising of them are SCMA (Sparse Code Multiple Access) –and WSMA (Welch-bound equality Spread Multiple Access). The main goal of this article is to compare the performance of non-orthogonal SCMA and WSMA schemes.
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