Investigation of Evolving Multiple Access Technologies for 5G Wireless System

Large demand for new wireless data flow and services, the development of the next-generation mobile (NGM) system of communication has been prioritized, with increased data rates, latency, and connection requirements. non-orthogonal multiple access (NOMA) techniques have recently been improved and suggested to NGM and downlink. NOMA numerous users to share a single (frequency, time, coding, or spatial) channel at the same time, resulting in improved spectrum efficiency and energy efficiency. The emerging various access technologies for the fifth generation of cellular networks (5G) wireless systems are the subject of this research article. The paper focuses on the presence of excessive multiple-access interference, which is generated by spectrum sharing among users, which is a characteristic of NOMA systems.