Abstract
Non-orthogonal multiple access (NOMA) is an emerging multiple access technology in obtaining higher capacity for the fifth-generation mobile communication network. To maximize the total data rate of the NOMA network, both user pairing and power allocation play a vital role. This paper compares the total system sum rate with two different user pairing techniques, Hungarian algorithm base user pairing and far-far (F–F) or near-near (N–N) user pairing and near far (N–F) user pairing technique. After the user pairing, two different power allocation techniques, optimal power allocation utilizing Karush–Kuhn–Tucker (KKT) constraints and dynamic power allocation (DYN), are applied to compare the total data rate of the system. The comparative results indicate that the system data rate of Hungarian algorithm base user pairing technique and optimum power allocation using KKT constraints is higher than that of the other user pairing technique with dynamic power allocation technique.
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