Intelligent reflecting surface (IRS) technology offers more feasible propagation paths for millimeter-wave (mmWave) communication systems to overcome blockage than existing technologies. In this paper, we consider a downlink wireless system with the IRS and formulate a joint power allocation and beamforming design problem to maximize the weighted sum-rate, which is a multi-variable optimization problem. To solve the problem, we propose a novel alternating manifold optimization based beamforming algorithm. Simulation results show that our proposed optimization algorithm outperforms existing algorithms significantly in improving the weighted sum-rate of the wireless communication system.
@article{arxiv.2001.07467,
title = {IRS-Assisted Millimeter Wave Communications: Joint Power Allocation and Beamforming Design},
author = {Yue Xiu and Yang Zhao and Yang Liu and Jun Zhao and Osman Yagan and Ning Wei},
journal= {arXiv preprint arXiv:2001.07467},
year = {2021}
}