Abstract
Power loss is an important design factor for Visible Light Communication (VLC). Dissipating only a few percent of the illumination power can still result into a few watts of heat generation which requires additional provisions for cooling the modulator circuit. We show that a transistor in series with LED can be used in linear operation to apply amplitude modulation which only marginally sacrifices efficiency. Yet, this requires a novel active control loop. We report its performance and frequency response for VLC modulation. We show that the modulator also effectively cancels mains ripple. Based on our experimental experience, we also propose a model to quantify the power losses and verify these for pulse amplitude modulation.
Original language | English |
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Title of host publication | 2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings |
Place of Publication | Piscataway |
Publisher | Institute of Electrical and Electronics Engineers |
Number of pages | 6 |
ISBN (Electronic) | 978-1-5386-4920-6 |
ISBN (Print) | 978-1-5386-4921-3 |
DOIs | |
Publication status | Published - 19 Feb 2019 |
Event | 2018 IEEE Global Communications Conference (GLOBECOM 2018) - Abu Dhabi, United Arab Emirates, Abu Dhabi, United Arab Emirates Duration: 9 Dec 2018 → 13 Dec 2018 |
Conference
Conference | 2018 IEEE Global Communications Conference (GLOBECOM 2018) |
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Abbreviated title | GLOBECOM 2018 |
Country/Territory | United Arab Emirates |
City | Abu Dhabi |
Period | 9/12/18 → 13/12/18 |
Keywords
- LED drivers
- Li-Fi
- Optical Wireless Communication
- Visible Light Communication