Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems
In this paper, a multiuser detection technique is proposed and experimentally verified in underwater optical wireless communication (UOWC) under dynamic channel conditions, which incorporates subspace-based delay estimation and decorrelating multiuser detection methods for an asynchronous access sys...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
IEEE
2024-01-01
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| Series: | IEEE Photonics Journal |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/10433671/ |
| _version_ | 1797293301782544384 |
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| author | Weijie Liu Xiaorui Chen Nuo Huang Zhengyuan Xu |
| author_facet | Weijie Liu Xiaorui Chen Nuo Huang Zhengyuan Xu |
| author_sort | Weijie Liu |
| collection | DOAJ |
| description | In this paper, a multiuser detection technique is proposed and experimentally verified in underwater optical wireless communication (UOWC) under dynamic channel conditions, which incorporates subspace-based delay estimation and decorrelating multiuser detection methods for an asynchronous access system. The subspace-based delay estimation method necessitates only prior knowledge of user spreading codes. The decorrelating multiuser detector can suppress multiple access interference (MAI) and demonstrates superior detection performance in a dynamic channel. An underwater testbench that supports three-user asynchronous access is established to further validate the multiuser detection technique. Experimental results demonstrate the effectiveness of alleviating the negative effects of user asynchrony, MAI, and intensity fluctuation. |
| first_indexed | 2024-03-07T20:10:52Z |
| format | Article |
| id | doaj.art-6dd74a46adff4829906d934d406fc833 |
| institution | Directory Open Access Journal |
| issn | 1943-0655 |
| language | English |
| last_indexed | 2024-03-07T20:10:52Z |
| publishDate | 2024-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Photonics Journal |
| spelling | doaj.art-6dd74a46adff4829906d934d406fc8332024-02-28T00:00:09ZengIEEEIEEE Photonics Journal1943-06552024-01-011621810.1109/JPHOT.2024.336569510433671Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC SystemsWeijie Liu0https://orcid.org/0000-0003-3653-3637Xiaorui Chen1https://orcid.org/0009-0005-7025-7842Nuo Huang2https://orcid.org/0000-0003-3660-9128Zhengyuan Xu3https://orcid.org/0000-0003-3660-9128CAS Key Laboratory of Wireless-Optical Communications, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaCAS Key Laboratory of Wireless-Optical Communications, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaCAS Key Laboratory of Wireless-Optical Communications, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaCAS Key Laboratory of Wireless-Optical Communications, School of Information Science and Technology, University of Science and Technology of China, Hefei, ChinaIn this paper, a multiuser detection technique is proposed and experimentally verified in underwater optical wireless communication (UOWC) under dynamic channel conditions, which incorporates subspace-based delay estimation and decorrelating multiuser detection methods for an asynchronous access system. The subspace-based delay estimation method necessitates only prior knowledge of user spreading codes. The decorrelating multiuser detector can suppress multiple access interference (MAI) and demonstrates superior detection performance in a dynamic channel. An underwater testbench that supports three-user asynchronous access is established to further validate the multiuser detection technique. Experimental results demonstrate the effectiveness of alleviating the negative effects of user asynchrony, MAI, and intensity fluctuation.https://ieeexplore.ieee.org/document/10433671/Underwater optical wireless communication (UOWC)asynchronous accesssubspace-based delay estimationdecorrelating multiuser detection |
| spellingShingle | Weijie Liu Xiaorui Chen Nuo Huang Zhengyuan Xu Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems IEEE Photonics Journal Underwater optical wireless communication (UOWC) asynchronous access subspace-based delay estimation decorrelating multiuser detection |
| title | Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems |
| title_full | Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems |
| title_fullStr | Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems |
| title_full_unstemmed | Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems |
| title_short | Experimental Verification of a Multiuser Detection Technique for Asynchronous UOWC Systems |
| title_sort | experimental verification of a multiuser detection technique for asynchronous uowc systems |
| topic | Underwater optical wireless communication (UOWC) asynchronous access subspace-based delay estimation decorrelating multiuser detection |
| url | https://ieeexplore.ieee.org/document/10433671/ |
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