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High-dimensional feature based non-coherent detection for multi-intensity modulated ultraviolet communications
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Hu, Wenxiu, Zhang, Min, Li, Zhe, Popov, Sergei, Leeson, Mark S. and Xu, Tianhua (2022) High-dimensional feature based non-coherent detection for multi-intensity modulated ultraviolet communications. IEEE Journal of Lightwave Technology, 40 (7). pp. 1879-1887. doi:10.1109/JLT.2021.3130101 ISSN 0733-8724.
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WRAP-High-dimensional-feature-non-coherent-detection-multi-intensity-ultraviolet-communications-2021.pdf - Accepted Version - Requires a PDF viewer. Download (1206Kb) | Preview |
Official URL: https://doi.org/10.1109/JLT.2021.3130101
Abstract
Ultraviolet communication (UVC) has been regarded as a promising supplement for overloaded conventional wireless communications. One challenge lies in the communication deterioration caused by the UV-photon scattering induced inter-symbol-interference (ISI), which will be even worse when encountering multilevel pulse amplitude modulation (multi-PAM) symbols. To address the ISI, traditional coherent detection methods (e.g., maximum-likelihood sequence detection, MLSD) require high computational complexities for UV channel estimation and sequential detection space formation, thereby making them less attractive. Current non-coherent detection, which simply combines the ISI-insensitive UV signal features (e.g., the rising edge) as the 1-dimensional metric, cannot guarantee reliable communication accuracy. In this work, a novel high-dimensional (HD) non-coherent detection scheme is proposed, leveraging a HD construction of the ISI-insensitive UV signal features. By doing so, we transform the ISI caused sequential detection into an ISI-released HD detection framework, which avoids complex channel estimation and sequential detection space computation. Then, to compute the detection surface, a UV feature based unsupervised learning approach is designed. We deduce the theoretical bit error rate (BER) in terms of the signal-to-noise-ratio (SNR), and prove that the proposed HD non-coherent detection method has a lower BER than that of the current 1D non-coherent scheme. Simulation results validate our results, and more importantly, demonstrate a very-close BER with the state-of-the-art coherent MLSD ( <1 dB in SNR at BER =4.5×10−3 , the 7% overhead forward-error-correction limit), and also a reduction of computational complexity by four orders of magnitude.
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | Q Science > QC Physics T Technology > TK Electrical engineering. Electronics Nuclear engineering |
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| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Wireless communication systems, Photons -- Scattering, Pulse amplitude modulation , Signal detection | ||||||||||||
| Journal or Publication Title: | IEEE Journal of Lightwave Technology | ||||||||||||
| Publisher: | IEEE | ||||||||||||
| ISSN: | 0733-8724 | ||||||||||||
| Official Date: | April 2022 | ||||||||||||
| Dates: |
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| Volume: | 40 | ||||||||||||
| Number: | 7 | ||||||||||||
| Page Range: | pp. 1879-1887 | ||||||||||||
| DOI: | 10.1109/JLT.2021.3130101 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Reuse Statement (publisher, data, author rights): | © 2021 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works. | ||||||||||||
| Access rights to Published version: | Restricted or Subscription Access | ||||||||||||
| Date of first compliant deposit: | 22 November 2021 | ||||||||||||
| Date of first compliant Open Access: | 23 November 2021 | ||||||||||||
| RIOXX Funder/Project Grant: |
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