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High-Dimensional Fe...
High-Dimensional Feature Based Non-Coherent Detection for Multi-Intensity Modulated Ultraviolet Communications
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- Hu, Wenxiu (författare)
- Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England.
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- Zhang, Min (författare)
- Beijing Univ Posts & Telecommun, Inst Informat Photon & Opt Commun, Beijing 100876, Peoples R China.
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- Li, Zhe (författare)
- II VI Inc, Horsham, PA 19044 USA.
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- Popov, Sergei (författare)
- KTH,Fotonik
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- Leeson, Mark (författare)
- Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England.
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- Xu, Tianhua (författare)
- Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England.;Tianjin Univ, Tianjin 300072, Peoples R China.;Univ Coll London UCL, London W E 6BT, England.
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Univ Warwick, Sch Engn, Coventry CV4 7AL, W Midlands, England Beijing Univ Posts & Telecommun, Inst Informat Photon & Opt Commun, Beijing 100876, Peoples R China. (creator_code:org_t)
- Institute of Electrical and Electronics Engineers (IEEE), 2022
- 2022
- Engelska.
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Ingår i: Journal of Lightwave Technology. - : Institute of Electrical and Electronics Engineers (IEEE). - 0733-8724 .- 1558-2213. ; 40:7, s. 1879-1887
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- 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 intersymbol-interference (ISI), which will be even worse when encountering multilevel pulse amplitude modulation (multi-PAM) symbols. To address this 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) into a one-dimensional (1D) 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), and prove that the proposed HI) 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 BER that approaches that of the state-of-the-art coherent MLSD (<1 dB in SNR at BER = 4.5 x 10(-8), the 7% overhead forward-error-correction limit), and also a reduction of computational complexity by at least two orders of magnitude.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Elektroteknik och elektronik -- Telekommunikation (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Electrical Engineering, Electronic Engineering, Information Engineering -- Telecommunications (hsv//eng)
Nyckelord
- Inter-symbol interference
- non coherent detection
- ultraviolet communications
- unsupervised learning
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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