Abstract
In non orthogonal multiple access (NOMA), the base station transmits data to weak and strong users randomly chosen. In this paper, we suggest two strategies for users' paring maximising the average or instantaneous total throughput. We also perform joint users' pairing and resource allocation. We choose the best bandwidth and power allocation as well as user pairing in order to maximise the instantaneous or average total throughput. NOMA average and instantaneous total throughput maximisation by smart users' pairing as well as bandwidth and power allocation is novel and not yet suggested. Our results are based on users' ranking using instantaneous channel gains for Rayleigh channels. Instantaneous throughput maximisation allows 1-6 dB gain with respect to average throughput maximisation.