Spectrally Efficient Multiple Input Multiple Output (MIMO) Non-Orthogonal Multiple Access (NOMA) Technique for Future Wireless Communication

Non-orthogonal multiple access (NOMA), has the most recent multiple access technology used in mobile networks. NOMA along with multi antenna multi-input multi-output (MIMO) technology will provides a tremendous improvement in spectral efficiency. It also provides better wireless services to large number of users. In NOMA superposition coding (SC) and successive interference cancellation (SIC) is used at the transmitter and receiver respectively. With this multiple access technique users with different channel conditions share same resources and achieve high data rate, massive connectivity with low latency. In this paper, review of different MIMO-NOMA techniques are explored. Receiver antennas are separated into clusters. Each cluster contains two or more BS transmit antennas. Every cluster works on NOMA technique based on the power domain.