PERFORMANCE ANALYSIS OF SINGLE CARRIER NON-ORTHOGONAL MULTIPLE ACCESS (SC-NOMA) IN MULTI-USER COMMUNICATION SYSTEMS: CAPACITY LIMITATIONS AND TRADE-OFFS

Abstract

This research presents a comprehensive result analysis of a Single Carrier Non-Orthogonal Multiple Access system under various scenarios involving increasing transmitted power and the number of multiplexed users. The primary goal is to achieve valuable insights into the capacity limitations and trade-offs associated with SC-NOMA as the amount of users grows. The simulated data showcases the system's performance and highlights the advantages of SC-NOMA instead of traditional OMA plans. The data analysis reveals that as the quantity of users in the SC-NOMA system increase, there is an increase in the network's entire capacity, demonstrating the effectiveness of power allocation and superposition coding. Users having weaker channel conditions receive higher power allocation, leading to improved data rates compared to OMA schemes. The system exhibits higher spectral efficiency, fairness, and overall capacity in multi-user scenarios.

Keywords: Performance Analysis, Power Optimization, Fairness, Path Loss, Capacity, Fairness.