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Dimmable visible light communications based on multilayer ACO-OFDM

Dimmable visible light communications based on multilayer ACO-OFDM
Dimmable visible light communications based on multilayer ACO-OFDM
This paper proposes a dimmable scheme for a visible light communication (VLC) system based on multilayer asymmetrically clipped optical orthogonal frequency-division multiplexing (ACO-OFDM), which is able to support a wide dimming range for different illumination requirements. In the proposed scheme, multiple layers of ACO-OFDM occupying different subcarriers are combined so that almost all of the subcarriers can be used for data transmission. The polarities of different layers of ACO-OFDM are varied to obtain flexible time-domain waveform, which can fully exploit the dynamic range of light-emitting diodes (LEDs) and achieve better performance. The scaling factor and modulation order for each layer, as well as the dc bias, are optimized for different dimming requirements to achieve improved spectral efficiency. Simulation results demonstrate that the proposed scheme can support communication over a wide dimming range and achieve higher spectral efficiency, compared with existing methods under different dimming requirements.
1943-0655
1-12
Wang, Qi
91220429-39a1-459a-9dfb-20fb90bfa974
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Dai, Linglong
a3b9a8e1-777f-4196-a388-969444c7239d
Quan, Jinguo
9a0f0783-4643-4e9d-9cb9-a148bbef677d
Wang, Qi
91220429-39a1-459a-9dfb-20fb90bfa974
Wang, Zhaocheng
70339538-3970-4094-bcfc-1b5111dfd8b4
Dai, Linglong
a3b9a8e1-777f-4196-a388-969444c7239d
Quan, Jinguo
9a0f0783-4643-4e9d-9cb9-a148bbef677d

Wang, Qi, Wang, Zhaocheng, Dai, Linglong and Quan, Jinguo (2016) Dimmable visible light communications based on multilayer ACO-OFDM. IEEE Photonics Journal, 8 (3), 1-12. (doi:10.1109/JPHOT.2016.2573040).

Record type: Article

Abstract

This paper proposes a dimmable scheme for a visible light communication (VLC) system based on multilayer asymmetrically clipped optical orthogonal frequency-division multiplexing (ACO-OFDM), which is able to support a wide dimming range for different illumination requirements. In the proposed scheme, multiple layers of ACO-OFDM occupying different subcarriers are combined so that almost all of the subcarriers can be used for data transmission. The polarities of different layers of ACO-OFDM are varied to obtain flexible time-domain waveform, which can fully exploit the dynamic range of light-emitting diodes (LEDs) and achieve better performance. The scaling factor and modulation order for each layer, as well as the dc bias, are optimized for different dimming requirements to achieve improved spectral efficiency. Simulation results demonstrate that the proposed scheme can support communication over a wide dimming range and achieve higher spectral efficiency, compared with existing methods under different dimming requirements.

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Accepted/In Press date: 23 May 2016
e-pub ahead of print date: 25 May 2016
Published date: 1 June 2016
Organisations: Southampton Wireless Group

Identifiers

Local EPrints ID: 400503
URI: http://eprints.soton.ac.uk/id/eprint/400503
ISSN: 1943-0655
PURE UUID: c9ca90d6-5657-4ab3-ae3b-20a94ad5b834
ORCID for Qi Wang: ORCID iD orcid.org/0000-0003-2645-5807

Catalogue record

Date deposited: 19 Sep 2016 08:48
Last modified: 15 Mar 2024 02:20

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Contributors

Author: Qi Wang ORCID iD
Author: Zhaocheng Wang
Author: Linglong Dai
Author: Jinguo Quan

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