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Non-coherent detection for ultraviolet communications with inter-symbol interference
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Hu, Wenxiu, Wei, Zhuangkun, Popov, Sergei, Leeson, Mark S., Zhang, Min and Xu, Tianhua (2020) Non-coherent detection for ultraviolet communications with inter-symbol interference. Journal of Lightwave Technology, 38 (17). pp. 4699-4707. doi:10.1109/JLT.2020.2993537 ISSN 0733-8724.
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WRAP-Non-coherent-detection-ultraviolet-Hu-2020.pdf - Accepted Version - Requires a PDF viewer. Download (813Kb) | Preview |
Official URL: http://dx.doi.org/10.1109/JLT.2020.2993537
Abstract
Ultraviolet communication (UVC) serves as a promising supplement to share the responsibility for the overloads in conventional wireless communication systems. One challenge for UVC lies in inter-symbol-interference (ISI), which combined with the ambient noise, contaminates the received signals and thereby deteriorates the communication accuracy. Existing coherent signal detection schemes (e.g. maximum likelihood sequence detection, MLSD) require channel state information (CSI) to compensate the channel ISI effect, thereby falling into either a long overhead and large computational complexity, or poor CSI acquisition that further hinders the detection performance. Non-coherent schemes for UVC, although capable of reducing the complexity, cannot provide high detection accuracy in the face of ISI. In this work, we propose a novel non-coherent paradigm via the exploration of the UV signal features that are insensitive to the ISI. By optimally weighting and combining the extracted features to minimize the bit error rate (BER), the optimally-weighted non-coherent detection (OWNCD) is proposed, which converts the signal detection with ISI into a binary detection framework with a heuristic decision threshold. As such, the proposed OWNCD avoids the complex CSI estimation and guarantees the detection accuracy. Compared to the state-of-the-art MLSD in the cases of static and time-varying CSI, the proposed OWNCD can gain ∼1 dB and 8 dB in signal-to-noise-ratio (SNR) at the 7% overhead FEC limit (BER of 4.5×10 −3 , respectively, and can also reduce the computational complexity by 4 order of magnitude
| Item Type: | Journal Article | ||||||||||||
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| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering | ||||||||||||
| Divisions: | Faculty of Science, Engineering and Medicine > Engineering > Engineering | ||||||||||||
| Library of Congress Subject Headings (LCSH): | Wireless communication systems, Optical communications, Laser beams -- Scattering, Signal detection | ||||||||||||
| Journal or Publication Title: | Journal of Lightwave Technology | ||||||||||||
| Publisher: | IEEE | ||||||||||||
| ISSN: | 0733-8724 | ||||||||||||
| Official Date: | 1 September 2020 | ||||||||||||
| Dates: |
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| Volume: | 38 | ||||||||||||
| Number: | 17 | ||||||||||||
| Page Range: | pp. 4699-4707 | ||||||||||||
| DOI: | 10.1109/JLT.2020.2993537 | ||||||||||||
| Status: | Peer Reviewed | ||||||||||||
| Publication Status: | Published | ||||||||||||
| Reuse Statement (publisher, data, author rights): | © 2020 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: | 21 May 2020 | ||||||||||||
| Date of first compliant Open Access: | 21 May 2020 | ||||||||||||
| RIOXX Funder/Project Grant: |
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