Passive Beamforming for IRS Aided Wireless Networks
Information Theory
2020-07-22 v1 math.IT
Abstract
In this letter, we design passive beamforming in an intelligent reflecting surface (IRS) assisted multiple-user wireless network. Two different scenarios are considered, namely, multicasting and multi-user downlink transmission. We optimize the passive beamforming vector of the IRS to maximize the smallest signal-to-noise ratio of the users in both scenarios. Based on the alternating direction method of multipliers algorithm, a low complexity method is designed to iteratively solve the established problem. In each iteration of the proposed method, the solution is in closed form, and thus the computation complexity is low. Numerical results are presented to show the efficiency of the proposed method.
Cite
@article{arxiv.2007.10943,
title = {Passive Beamforming for IRS Aided Wireless Networks},
author = {Ke-Wen Huang and Hui-Ming Wang},
journal= {arXiv preprint arXiv:2007.10943},
year = {2020}
}
Comments
Accepted by IEEE WCL