A Proportional Fairness-based Power Allocation Scheme for Non-orthogonal Multiple Access Downlink Systems

This paper tackles the problem of proportional fairness-based power allocation in downlink non-orthogonal multiple access (NOMA) systems. We address the scenario where the users are divided into groups of two. NOMA technique is applied within each group with the superposition coding at the transmitter side and successive interference cancellation (SIC) at the receivers’ side, and different groups are assigned separate channels. We assume that …