Abstract
The Non-orthogonal Multiple Access (NOMA) technique is seen as an important technology in the future 5G networks’ architecture. This paper mainly studied a new method of user pairing in NOMA communication to satisfy the signal transmission and reception. It proposes pairing of users in nonoverlapping frequency bands so that two or more edge users can be paired with one central user at the same time. We made a comparison between our new user pairing model and the traditional NOMA system model. Simulation results show that this improvement not only reduces the number of users but also increases the bandwidth utilization, even more it increases the system’s ergodic sum capacity.
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