Details
| Original language | English |
|---|---|
| Title of host publication | Integrated Optics |
| Subtitle of host publication | Design, Devices, Systems and Applications VI |
| Editors | Pavel Cheben, Jiri Ctyroky, Inigo Molina-Fernandez |
| Publisher | SPIE |
| ISBN (electronic) | 9781510643840 |
| Publication status | Published - 18 Apr 2021 |
| Event | Integrated Optics: Design, Devices, Systems and Applications VI 2021 - Virtual, Online, Czech Republic Duration: 19 Apr 2021 → 23 Apr 2021 |
Publication series
| Name | Proceedings of SPIE - The International Society for Optical Engineering |
|---|---|
| Volume | 11775 |
| ISSN (Print) | 0277-786X |
| ISSN (electronic) | 1996-756X |
Abstract
Visible light communication (VLC) allows the dual use of lighting and wireless communication systems by modulation of illumination devices. However, to increase the performance, typically, beam-forming measures are taken creating pencil beams, thus contradicting the illumination purpose. In order to optimize the performance trade off between efficient illumination and communication, the switching capabilities of illumination LEDs are examined. Illumination LEDs with standard drivers and without beam-forming show limited applicability for communication purposes as they are not optimized for the necessary switching capability (f ≈ 11 MHz) and coherence. Methods to enhance the electrical current by pre-equalisation, biasing, carrier sweeping and current shaping are examined in respect to the illumination LED’s communication performance. A novel driver scheme is derived which achieves considerably higher switching frequencies (f ≥ 100 MHz) without employing beam-forming at the illumination LED. This driver is able to obtain a data rate of up to 200 Mbit/s at a distance of 3.2 m, using on-off keying (OOK) modulation technique. Therefore, it is feasible to apply the LED driver by implementing standardised illumination devices in VLC systems.
Keywords
- Dual-purpose drivers, Illumination, Li-Fi, Optical Wireless Communication, Visible Light Communication, VLC
ASJC Scopus subject areas
- Materials Science(all)
- Electronic, Optical and Magnetic Materials
- Physics and Astronomy(all)
- Condensed Matter Physics
- Computer Science(all)
- Computer Science Applications
- Mathematics(all)
- Applied Mathematics
- Engineering(all)
- Electrical and Electronic Engineering
Cite this
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- BibTeX
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Integrated Optics: Design, Devices, Systems and Applications VI. ed. / Pavel Cheben; Jiri Ctyroky; Inigo Molina-Fernandez. SPIE, 2021. 1177515 (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11775).
Research output: Chapter in book/report/conference proceeding › Conference contribution › Research › peer review
}
TY - GEN
T1 - Efficient visible light communication drivers using illumination LEDs in industrial environments
AU - Schneider, Daniel
AU - Shrotri, Abhijeet
AU - Flatt, Holger
AU - Stübbe, Oliver
AU - Lachmayer, Roland
N1 - Funding Information: This work was funded by the ”Bundesministerium für Wirtschaft und Energie” (BMWi/AiF Nr.: authors declare no conflicts of interest.
PY - 2021/4/18
Y1 - 2021/4/18
N2 - Visible light communication (VLC) allows the dual use of lighting and wireless communication systems by modulation of illumination devices. However, to increase the performance, typically, beam-forming measures are taken creating pencil beams, thus contradicting the illumination purpose. In order to optimize the performance trade off between efficient illumination and communication, the switching capabilities of illumination LEDs are examined. Illumination LEDs with standard drivers and without beam-forming show limited applicability for communication purposes as they are not optimized for the necessary switching capability (f ≈ 11 MHz) and coherence. Methods to enhance the electrical current by pre-equalisation, biasing, carrier sweeping and current shaping are examined in respect to the illumination LED’s communication performance. A novel driver scheme is derived which achieves considerably higher switching frequencies (f ≥ 100 MHz) without employing beam-forming at the illumination LED. This driver is able to obtain a data rate of up to 200 Mbit/s at a distance of 3.2 m, using on-off keying (OOK) modulation technique. Therefore, it is feasible to apply the LED driver by implementing standardised illumination devices in VLC systems.
AB - Visible light communication (VLC) allows the dual use of lighting and wireless communication systems by modulation of illumination devices. However, to increase the performance, typically, beam-forming measures are taken creating pencil beams, thus contradicting the illumination purpose. In order to optimize the performance trade off between efficient illumination and communication, the switching capabilities of illumination LEDs are examined. Illumination LEDs with standard drivers and without beam-forming show limited applicability for communication purposes as they are not optimized for the necessary switching capability (f ≈ 11 MHz) and coherence. Methods to enhance the electrical current by pre-equalisation, biasing, carrier sweeping and current shaping are examined in respect to the illumination LED’s communication performance. A novel driver scheme is derived which achieves considerably higher switching frequencies (f ≥ 100 MHz) without employing beam-forming at the illumination LED. This driver is able to obtain a data rate of up to 200 Mbit/s at a distance of 3.2 m, using on-off keying (OOK) modulation technique. Therefore, it is feasible to apply the LED driver by implementing standardised illumination devices in VLC systems.
KW - Dual-purpose drivers
KW - Illumination
KW - Li-Fi
KW - Optical Wireless Communication
KW - Visible Light Communication
KW - VLC
UR - http://www.scopus.com/inward/record.url?scp=85109219558&partnerID=8YFLogxK
U2 - 10.1117/12.2588923
DO - 10.1117/12.2588923
M3 - Conference contribution
AN - SCOPUS:85109219558
T3 - Proceedings of SPIE - The International Society for Optical Engineering
BT - Integrated Optics
A2 - Cheben, Pavel
A2 - Ctyroky, Jiri
A2 - Molina-Fernandez, Inigo
PB - SPIE
T2 - Integrated Optics: Design, Devices, Systems and Applications VI 2021
Y2 - 19 April 2021 through 23 April 2021
ER -