A Comprehensive Realization of Resource Spread Multiple Access / NOMA performances in 5G

Abstract

Since 4G has limited in capacity, restricted in resource utilization, reasonable latency and so on. In order to yield high performance factors of the above-said, a Non Orthogonal Multiple Access (NOMA) plays an important role in 5G communication networks. The NOMA is otherwise called as Resource Spread Multiple Access (RSMA), whose performance is quite fit while envisioned for the forthcoming communication (i.e., 5G and above), which fulfil the requirements of the current 5th Generation, in view of capacity improvement, power allocation, lower latency, outage probability for both uplink and downlink configurations. This paper gets into the analytical and simulation analysis of the power domain NOMA technique to two users case on sum capacity and outage power probability for conventional un-ordered (not fixed) and ordered (fixed). Based on the position of the users as near base stations and cell edges are analyzed, subjected not to compromise the quality of service (QoS), maximize the spectrum utilization, out-and-out resource allocation, good energy efficiency and so on. Here an interesting view on both the channel gain and SNR are possessed higher degree of consent on outage power and successive interference cancellation. When the channel gains are equal on both the users, correspondingly SNR and outage probability varies. On the other hand, when the gain of the weaker user channel is higher than the gain of the stronger user channel, then a cross over point arises significantly. Moreover, the Successive Interferences Cancellation (SIC) has increased by reducing the Signal to Noise ratio (SNR) and vice versa. This ideology is suited for the applications of 5G requiring asynchronous and grant-free access like IOT and mission critical control.