Throughput comparison of two user system for orthogonal and non-orthogonal multiple access

Non-orthogonal multiple access (NOMA) technique has gained a significant attention as paramount multiple access technique for the future generation mobile networks. The code/time/frequency resources that are being used by conventional multiple access techniques, i.e., orthogonal multiple access (OMA) has been getting saturated gradually. The unexploited resource, i.e., power domain is utilized by NOMA to support multiple users at same time/frequency resources. In this work, an analysis and improvement of throughput are presented based on varying channel conditions of two users within a beam using NOMA over OMA. (author)