Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications
The orthogonality characteristics of orbital angular momentum (OAM) can provide a new degree of freedom for optical wireless communication (OWC) systems. By transmitting multiple different orders of OAM states within a single beam, multiple data channels can be carried to the end users simultaneousl...
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| Format: | Article |
| Language: | English |
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Elsevier
2024-12-01
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| Series: | ICT Express |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2405959524000821 |
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| author | Siti Hasunah Mohammad Yeon Ho Chung Sudhanshu Arya |
| author_facet | Siti Hasunah Mohammad Yeon Ho Chung Sudhanshu Arya |
| author_sort | Siti Hasunah Mohammad |
| collection | DOAJ |
| description | The orthogonality characteristics of orbital angular momentum (OAM) can provide a new degree of freedom for optical wireless communication (OWC) systems. By transmitting multiple different orders of OAM states within a single beam, multiple data channels can be carried to the end users simultaneously. As the value of the OAM state increases to a higher order, the conventional single OAM state beam suffers from destructive interference due to decreasing intensity and increasing divergence angle as the beam spreads out. In this paper, we propose a novel OAM beamforming technique for an indoor multiuser OWC network using weighted impulse response, based on the sum of intensity contributions of superposed multiple OAM states carrying Laguerre-Gaussian (LG) ultraviolet (UV) beams. The proposed OAM beamforming method is shown to reduce the destructive interference at the dark region of the beam and to increase the amplitude of intensity distribution of the beamformed OAM states. Consequently, the proposed method shows better performance with increasing OAM states beamformed together in the OWC channel, compared to a conventional single OAM state LG UV beam. |
| format | Article |
| id | doaj-art-7aee9d5c01b0489fa4a10083c37577ca |
| institution | OA Journals |
| issn | 2405-9595 |
| language | English |
| publishDate | 2024-12-01 |
| publisher | Elsevier |
| record_format | Article |
| series | ICT Express |
| spelling | doaj-art-7aee9d5c01b0489fa4a10083c37577ca2025-08-20T01:56:01ZengElsevierICT Express2405-95952024-12-011061220122510.1016/j.icte.2024.07.004Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communicationsSiti Hasunah Mohammad0Yeon Ho Chung1Sudhanshu Arya2Artificial Intelligence Research Institute, Pukyong National University, Busan, South KoreaDepartment of Information and Communications Engineering, Pukyong National University, Busan, South Korea; Corresponding author.School of Electronics, Department of Communication Engineering, Vellore Institute of Technology, Vellore, 632014, Tamilnadu, IndiaThe orthogonality characteristics of orbital angular momentum (OAM) can provide a new degree of freedom for optical wireless communication (OWC) systems. By transmitting multiple different orders of OAM states within a single beam, multiple data channels can be carried to the end users simultaneously. As the value of the OAM state increases to a higher order, the conventional single OAM state beam suffers from destructive interference due to decreasing intensity and increasing divergence angle as the beam spreads out. In this paper, we propose a novel OAM beamforming technique for an indoor multiuser OWC network using weighted impulse response, based on the sum of intensity contributions of superposed multiple OAM states carrying Laguerre-Gaussian (LG) ultraviolet (UV) beams. The proposed OAM beamforming method is shown to reduce the destructive interference at the dark region of the beam and to increase the amplitude of intensity distribution of the beamformed OAM states. Consequently, the proposed method shows better performance with increasing OAM states beamformed together in the OWC channel, compared to a conventional single OAM state LG UV beam.http://www.sciencedirect.com/science/article/pii/S2405959524000821Orbital angular momentumLaguerre-Gaussian beamOAM beamformingOptical wireless communication |
| spellingShingle | Siti Hasunah Mohammad Yeon Ho Chung Sudhanshu Arya Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications ICT Express Orbital angular momentum Laguerre-Gaussian beam OAM beamforming Optical wireless communication |
| title | Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| title_full | Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| title_fullStr | Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| title_full_unstemmed | Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| title_short | Orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| title_sort | orbital angular momentum beamforming techniques for indoor multiuser optical wireless communications |
| topic | Orbital angular momentum Laguerre-Gaussian beam OAM beamforming Optical wireless communication |
| url | http://www.sciencedirect.com/science/article/pii/S2405959524000821 |
| work_keys_str_mv | AT sitihasunahmohammad orbitalangularmomentumbeamformingtechniquesforindoormultiuseropticalwirelesscommunications AT yeonhochung orbitalangularmomentumbeamformingtechniquesforindoormultiuseropticalwirelesscommunications AT sudhanshuarya orbitalangularmomentumbeamformingtechniquesforindoormultiuseropticalwirelesscommunications |