Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications
This paper investigates the employment of reconfigurable intelligent surfaces (RISs) to improve the asymptotic capacity of the multiple-input single-output (MISO) visible light communication (VLC) system in the case of high signal-to-noise (SNR). For the RIS-aided MISO-VLC system based on mirror arr...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-07-01
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| Series: | Photonics |
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| Online Access: | https://www.mdpi.com/2304-6732/9/7/487 |
| _version_ | 1797433213983916032 |
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| author | Qi Wu Jian Zhang Jianing Guo |
| author_facet | Qi Wu Jian Zhang Jianing Guo |
| author_sort | Qi Wu |
| collection | DOAJ |
| description | This paper investigates the employment of reconfigurable intelligent surfaces (RISs) to improve the asymptotic capacity of the multiple-input single-output (MISO) visible light communication (VLC) system in the case of high signal-to-noise (SNR). For the RIS-aided MISO-VLC system based on mirror array, we regard the high-SNR asymptotic capacity with the input subject to peak-intensity constraints as a goal and formulate an asymptotic capacity maximization problem to find the optimal orientations of mirrors. As for the non-convex optimization problem, we convert it into a quadratic programming (QP) problem with hemispherical constraints and prove that it can be solved by computing the maximum eigenvalue of an equivalent matrix. Simulation results indicate that the asymptotic capacity is able to be improved significantly by adopting RIS in MISO-VLC systems. Meanwhile, we observe that the proper deployment scheme of RIS is able to enhance the degree of improvement through several simulations. |
| first_indexed | 2024-03-09T10:13:50Z |
| format | Article |
| id | doaj.art-cbdc80b41b6147eb89e69070c2542133 |
| institution | Directory Open Access Journal |
| issn | 2304-6732 |
| language | English |
| last_indexed | 2024-03-09T10:13:50Z |
| publishDate | 2022-07-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Photonics |
| spelling | doaj.art-cbdc80b41b6147eb89e69070c25421332023-12-01T22:35:21ZengMDPI AGPhotonics2304-67322022-07-019748710.3390/photonics9070487Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light CommunicationsQi Wu0Jian Zhang1Jianing Guo2National Digital Switching System Engineering and Technological Research Center, Zhengzhou 450000, ChinaNational Digital Switching System Engineering and Technological Research Center, Zhengzhou 450000, ChinaNational Digital Switching System Engineering and Technological Research Center, Zhengzhou 450000, ChinaThis paper investigates the employment of reconfigurable intelligent surfaces (RISs) to improve the asymptotic capacity of the multiple-input single-output (MISO) visible light communication (VLC) system in the case of high signal-to-noise (SNR). For the RIS-aided MISO-VLC system based on mirror array, we regard the high-SNR asymptotic capacity with the input subject to peak-intensity constraints as a goal and formulate an asymptotic capacity maximization problem to find the optimal orientations of mirrors. As for the non-convex optimization problem, we convert it into a quadratic programming (QP) problem with hemispherical constraints and prove that it can be solved by computing the maximum eigenvalue of an equivalent matrix. Simulation results indicate that the asymptotic capacity is able to be improved significantly by adopting RIS in MISO-VLC systems. Meanwhile, we observe that the proper deployment scheme of RIS is able to enhance the degree of improvement through several simulations.https://www.mdpi.com/2304-6732/9/7/487reconfigurable intelligent surface (RIS)asymptotic capacity analysisvisible light communicationquadratic programming problem |
| spellingShingle | Qi Wu Jian Zhang Jianing Guo Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications Photonics reconfigurable intelligent surface (RIS) asymptotic capacity analysis visible light communication quadratic programming problem |
| title | Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications |
| title_full | Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications |
| title_fullStr | Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications |
| title_full_unstemmed | Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications |
| title_short | Capacity Maximization for Reconfigurable Intelligent Surface-Aided MISO Visible Light Communications |
| title_sort | capacity maximization for reconfigurable intelligent surface aided miso visible light communications |
| topic | reconfigurable intelligent surface (RIS) asymptotic capacity analysis visible light communication quadratic programming problem |
| url | https://www.mdpi.com/2304-6732/9/7/487 |
| work_keys_str_mv | AT qiwu capacitymaximizationforreconfigurableintelligentsurfaceaidedmisovisiblelightcommunications AT jianzhang capacitymaximizationforreconfigurableintelligentsurfaceaidedmisovisiblelightcommunications AT jianingguo capacitymaximizationforreconfigurableintelligentsurfaceaidedmisovisiblelightcommunications |