Performance analysis of dynamic ordered NOMA system

Non-orthogonal multiple access (NOMA) has emerged as a key enabling technology for the fifth generation (5G) and beyond networks. NOMA supports massive mobile connectivity, increases spectral efficiency, and ensures user fairness by providing access to various users to share common wireless resources. In this work, the analysis of sum-rate and outage probability (OP) has been carried out in the case of a downlink (DL) dynamic ordered NOMA (D-NOMA) system. Sum-rate of the system has been maximized using Karush-Kuhn-Tucker (KKT) technique. Expressions of OP are obtained over the Rayleigh fading channel. Finally, simulations are done to confirm the expressions obtained for OP and sum-rate. Also, a sum-rate comparison between the D-NOMA system and the fixed NOMA (F-NOMA) system has been done.