Analysis of Optimization of Rate in Power Domain NOMA Schemes for MIMO

Non-orthogonal multiple access Technique is useful for many users in the same source allocation by multiplexing users in dissimilar area than frequency and moment. By this way, NOMA Techniques offer many compensation over (OMA) schemes such as improved spectral efficiency, higher throughput, massive connectivity support, and low communication latency. With these Advantages, NOMA transmission Technique is a best growing technique for upcoming wireless networks. When the power area is used to multiple users, it is referred as (PD-NOMA) Technique. In this paper the rate optimization Techniques studied in the literature survey when the Power Domain-NOMA scheme is joint with MIMO. The consider system models, the optimization methods used to maximize the promising rates, and the main outcome on the performance of these NOMA-enabled Techniques are discuss along with future research directions for these combined schemes.