Optimization of Surface Configuration in IRS-Aided MIMO-VLC: A BER Minimization Approach

Xin Zhong; Chen Chen; Wanli Wen; Min Liu; H. Y. Fu; Harald Haas

doi:10.1109/JPHOT.2024.3395894

IEEE Photonics Journal (Jan 2024)

Optimization of Surface Configuration in IRS-Aided MIMO-VLC: A BER Minimization Approach

Xin Zhong,
Chen Chen,
Wanli Wen,
Min Liu,
H. Y. Fu,
Harald Haas

Affiliations

Xin Zhong: ORCiD; School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China
Chen Chen: ORCiD; School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China
Wanli Wen: ORCiD; School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China
Min Liu: ORCiD; School of Microelectronics and Communication Engineering, Chongqing University, Chongqing, China
H. Y. Fu: ORCiD; Tsinghua Shenzhen International Graduate School, Tsinghua University, Shenzhen, China
Harald Haas: ORCiD; Technology Innovation Centre, Department of Electronic and Electrical Engineering, University of Strathclyde, Glasgow, U.K.

DOI: https://doi.org/10.1109/JPHOT.2024.3395894
Journal volume & issue: Vol. 16, no. 3
pp. 1 – 12

Abstract

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Due to its ability to reconfigure the optical channel, intelligent reflecting surface (IRS) has revealed its great potential for enhancing the performance of visible light communication (VLC) systems. In this paper, we apply a mirror array-based IRS in typical multiple-input multiple-output based VLC (MIMO-VLC) systems and optimize the IRS configuration to minimize the system bit error rate (BER). By utilizing the tight analytical BER upper bound, a BER minimization problem is formulated subject to the IRS configuration constraints. To solve this problem, an optimization algorithm is proposed which decomposes the original problem into three sub-problems, and the complexity of the algorithm is analyzed. The superiority of the obtained optimal IRS configuration scheme over the baseline scheme in terms of BER performance has been successfully verified through simulations in an indoor IRS-aided $4\times 4$ MIMO-VLC system applying different MIMO techniques.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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