Trends in Non-Orthogonal Multiple Access Techniques

Abstract: Non-Orthogonal Multiple Access (NOMA) is a crucial technology that allows the Fifth-Generation (5G) wireless networks to cater to the growing call for of massive connectivity, high data rates, low latency, and, increased spectral efficiency. Unlike conventional Orthogonal Multiple Access techniques, NOMA serves multiple customers in a single resource block including a time slot, frequency or code. The distinction between signals is achieved by the use of different power levels. The important purpose of this paper is to offer a quick review of NOMA along with the recent advances and challenges.

Keywords: Non-Orthogonal Multiple Access (NOMA), Successive Interference Cancellation (SIC), Power Domain NOMA.