Performance Analysis of MIMO-NOMA System based on Different User Pairing Schemes

Non-orthogonal multiple access (NOMA), along with multi antenna multi-input multi-output (MIMO) technology will provide increased spectral efficiency and serve large number of users with high data rate. Superposition coding (SC) technique which adds the different user's signals is used in uplink. To cancel the interference of other users' downlink uses successive interference cancellation (SIC). With this technology, all users can share same time or frequency resources and this improves data rate. Analysis of different MIMO-NOMA techniques based on different user pairing are explored in this paper. Base station is equipped with one or many antennas. Different clusters are formed according to BS antennas and users are separated into different clusters, which works on power domain NOMA.