影响因子：6.239

DOI码：10.1109/TVT.2021.3089021

发表刊物：IEEE Transactions on Vehicular Technology

摘要：The orbital angular momentum (OAM)-based communication systems may face severe transmission problems when the transmit and receive uniform circular array pairs are blocked. In this paper, a promising technique named intelligent reflecting surface (IRS) is proposed to help alleviate blockages and provide alternative line-of-sight links. To maximize the achievable rate of the IRS-assisted OAM communication systems, we optimize its transmit power allocation along with the IRS's reflecting phase shifts, and propose an alternative optimization-based algorithm to solve the resulting optimization problem with coupled variables and non-convex structure. Specifically, the proposed algorithm obtains a closed-form solution to the transmit power allocation by applying the majorization-minimization and ℓ1 -ball projection approaches, and obtain the locally optimal solution to the IRS's reflecting phase shifts by applying the weighted minimum mean square error-based fixed point iteration approach. Simulation results demonstrate the superiority of our proposed algorithm over existing baseline algorithms and also show its robust stability to the oblique angle errors.

合写作者：张广驰,崔苗

第一作者：李亦卿

通讯作者：姜淼

学科门类：工学

一级学科：信息与通信工程

文献类型：J

卷号：70

期号：7

页面范围：7277–7282

ISSN号：1939-9359

是否译文：否

发表时间：2021-07-01

收录刊物：SCI

发布期刊链接：https://ieeexplore.ieee.org/document/9454339