# Beam Design and User Scheduling for Non-Orthogonal Multiple Access with Multiple Antennas Based on Pareto-Optimality

## TL;DR

This paper introduces a Pareto-optimal beam design and user scheduling method for multi-user MISO NOMA systems, improving interference management and rate control through clustering, spatial ZF, and SIC.

## Contribution

It proposes a novel joint beam design and user scheduling approach based on Pareto-optimality for NOMA systems with multiple antennas, enhancing interference control and rate flexibility.

## Key findings

- Achieves effective interference management with spatial ZF and SIC.
- Provides flexible rate control for strong and weak users.
- Numerical results demonstrate improved system performance.

## Abstract

In this paper, an efficient transmit beam design and user scheduling method is proposed for multi-user (MU) multiple-input single-output (MISO) non-orthogonal multiple access (NOMA) downlink, based on Pareto-optimality. The proposed beam design and user scheduling method groups simultaneously-served users into multiple clusters with practical two users in each cluster, and then applies spatical zeroforcing (ZF) across clusters to control inter-cluster interference (ICI) and Pareto-optimal beam design with successive interference cancellation (SIC) to two users in each cluster to remove interference to strong users and leverage signal-to-interference-plus-noise ratios (SINRs) of interference-experiencing weak users. The proposed method has flexibility to control the rates of strong and weak users and numerical results show that the proposed method yields good performance.