Abstract
The sum rate for uplink multiple-input multiple-output non-orthogonal multiple access (MIMO-NOMA) channel is derived over a Rayleigh fading environment. Then, an optimal cluster formation and power control technique is jointly designed to maximise the sum rate under power and user rate constraints. Besides, a near-optimal algorithm is proposed to reduce the computational efforts significantly. Simulation results validate the effectiveness of presented schemes compared with the reference MIMO-NOMA and multiuser MIMO systems.
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