Abstract
In uplink Non-Orthogonal Multiple Access (NOMA) communication system, system sum rate and fairness are subject to resource allocation policy and receiver architecture. In this thesis, we study joint optimization of sum rate and fairness in uplink NOMA communication system by allocation of subbands and power to users. We also study in uplink NOMA communication with different receiver architecture. Compared to Orthogonal Multiple Access (OMA), NOMA can provide number of users L in each subband which improves system sum rate, spectrum efficiency. With total resources number N X L that N represents number of total subbands, NOMA can provide massive connectivity. With larger number of users K, multi-user diversity can be exploited with proposed scheme. Users experience should be improved in 5G, there is challenge for resource allocation considered with users experience. Without proper allocation of target data rate for each user in uplink NOMA communication system, a user can always be in outage. In this work, we constrain the number of subbands Ns that each user can use, users in cell-edge would be guaranteed in resource allocation. Hence, the fairness performance improve compared to prior arts. We also apply the algorithm to improve system sum rate iteratively. We have optimized, compared and analyzed the sum rate and fairness performance with different combination of L and Ns in the uplink NOMA communication system.