Mitigating nonlinearities under average power constraint in visible light communication

Wasiu O. Popoola*, Funmilayo B. Ogunkoya, Sinan Sinanovic

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The advent of data intensive applications on the mobile devices is putting a strain on the available RF spectrum. Recently, visible light wireless communications has become a desirable alternative due to the low cost of light emitting diode (LED) devices which can offer data rates in the Gigabit per second range while providing lighting. In addition, visible light belongs to the unlicensed part of spectrum which is easily reusable due to the fact that light does not penetrate walls. Various modulation techniques have been adopted for optical wireless because negative signals (or complex signals) cannot be used due to the fact that light intensity is a positive quantity. Orthogonal frequency division multiplexing (OFDM) has been successfully modified for optical wireless but it suffers from high peak-To-Average-power ratio (PAPR). High PAPR causes LED to operate in nonlinear region which leads to performance degradation. We discuss a technique to reduce PAPR while keeping averaging power constraint which is important for the purpose of lighting.

Original languageEnglish
Title of host publicationIWCMC 2014 - 10th International Wireless Communications and Mobile Computing Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages815-820
Number of pages6
ISBN (Print)9781479909599
DOIs
Publication statusPublished - 1 Jan 2014
Event10th International Wireless Communications and Mobile Computing Conference, IWCMC 2014 - Nicosia, United Kingdom
Duration: 4 Aug 20148 Aug 2014

Conference

Conference10th International Wireless Communications and Mobile Computing Conference, IWCMC 2014
CountryUnited Kingdom
CityNicosia
Period4/08/148/08/14

Keywords

  • OFDM
  • optical communications
  • optical wireless communications
  • PAPR
  • pilot-Assisted communication
  • Visible light communication

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