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This paper investigates the resource allocation scheme to maximize the energy efficiency for a downlink nonorthogonal multiple access (NOMA) system. An optimization problem is formulated taking into account the total power and the minimum user rate requirements to balance the system energy efficiency and the total system throughput. Due to the complexity of the objective function, we used the Dinkelbach...
Spectral efficiency (SE) and energy efficiency (EE) are the main metrics for designing wireless networks. Rather than focusing on either SE or EE separately, recent works have focused on the relationship between EE and SE and provided good insight into the joint EE–SE tradeoff. However, such works have assumed that the bandwidth was fully occupied regardless of the transmission requirements and therefore...
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