In this paper, we propose two beamforming designs for a multiple-input single-output non-orthogonal multiple access system considering the energy efficiency (EE) fairness between users. In particular, two quantitative fairness-based designs are developed to maintain fairness between the users in terms of achieved EE: max-min energy efficiency (MMEE) and proportional fairness (PF) designs. While the MMEE-based design aims to maximize the minimum EE of the users in the system, the PF-based design aims to seek a good balance between the global energy efficiency of the system and the EE fairness between the users. Detailed simulation results indicate that our proposed designs offer many-fold EE improvements over the existing energy-efficient beamforming designs.
@article{arxiv.1902.05732,
title = {Energy Efficiency Fairness Beamforming Designs for MISO NOMA Systems},
author = {Haitham Al-Obiedollah and Kanapathippillai Cumanan and Jeyarajan Thiyagalingam and Alister G. Burr and Zhiguo Ding and Octavia A. Dobre},
journal= {arXiv preprint arXiv:1902.05732},
year = {2019}
}