Transmission quality improvement by LED back-off optimization for visible light wireless communications

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

Abstract

This paper proposes an LED back-off optimization method for visible light wireless communications. The method changes the set back-off value and controls LED saturation according to Noise-to-Carrier power ratios (N/C) of a receiver. Signal-to-Noise and Distortion Ratio (SNDR) of a receiver with the proposed method is evaluated by computer simulation. In this evaluation, a wireless system with OFDM signals is assumed and an LED linearization method which uses clipping followed by inband filtering and pre-distortion is employed. The evaluation results show that the back-off optimization can improve transmission quality in a receiver. The result also shows that the linearization method can enhance the improvement.

Original languageEnglish
Title of host publicationProceedings - 20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017
PublisherIEEE Computer Society
Pages229-233
Number of pages5
Volume2017-December
ISBN (Electronic)9781538627679
DOIs
Publication statusPublished - Feb 22 2018
Event20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017 - Bali, Indonesia
Duration: Dec 17 2017Dec 20 2017

Other

Other20th International Symposium on Wireless Personal Multimedia Communications, WPMC 2017
CountryIndonesia
CityBali
Period12/17/1712/20/17

Keywords

  • Back-off
  • LED
  • Non-linear distortion compensation
  • Saturation control
  • Visible light communication

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Computer Science Applications
  • Human-Computer Interaction

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