Efficient amplitude modulator and ripple canceller for visible light communication

Kumar Arulandu, J.P.M.G. Linnartz, X. Deng

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

1 Citation (Scopus)

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 languageEnglish
Title of host publication2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Number of pages6
ISBN (Electronic)978-1-5386-4920-6
ISBN (Print)978-1-5386-4921-3
DOIs
Publication statusPublished - 19 Feb 2019
Event2018 IEEE Globecom Workshops, GC Wkshps 2018 - Abu Dhabi, United Arab Emirates
Duration: 9 Dec 201813 Dec 2018

Conference

Conference2018 IEEE Globecom Workshops, GC Wkshps 2018
CountryUnited Arab Emirates
CityAbu Dhabi
Period9/12/1813/12/18

Keywords

  • LED drivers
  • Li-Fi
  • Optical Wireless Communication
  • Visible Light Communication

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  • Cite this

    Arulandu, K., Linnartz, J. P. M. G., & Deng, X. (2019). Efficient amplitude modulator and ripple canceller for visible light communication. In 2018 IEEE Globecom Workshops, GC Wkshps 2018 - Proceedings [8644210] Institute of Electrical and Electronics Engineers. https://doi.org/10.1109/GLOCOMW.2018.8644210