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

3 Citations (Scopus)
1 Downloads (Pure)


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
Publication statusPublished - 19 Feb 2019
Event2018 IEEE Global Communications Conference (GLOBECOM 2018) - Abu Dhabi, United Arab Emirates, Abu Dhabi, United Arab Emirates
Duration: 9 Dec 201813 Dec 2018


Conference2018 IEEE Global Communications Conference (GLOBECOM 2018)
Abbreviated titleGLOBECOM 2018
Country/TerritoryUnited Arab Emirates
CityAbu Dhabi


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


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