Energy-spectral efficiency tradeoff of visible light communication systems

Enqing Li, Wensheng Zhang, Jian Sun, Cheng-Xiang Wang, Xiaohu Ge

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

4 Citations (Scopus)
138 Downloads (Pure)

Abstract

In this paper, we propose a new definition of the energy efficiency (EE) for indoor visible light communication (VLC) systems and further investigate the tradeoff between the EE and spectral efficiency (SE). Different from the conventional concept of the EE in wireless communication systems, the newly defined EE in VLC systems utilizes the optical communication power instead of radio frequency power to evaluate the consumed energy. Some key parameters (e.g., horizontal distance and vertical distance) in optical transmission circumstances are included when calculating the SE. The nonlinearity of light-emitting diode (LED) is also considered in the EE-SE tradeoff and such nonlinearity can be eliminated by pre-distortion. In particular, the relation between the electrical power and optical power can be derived based on the LED nonlinearity. Numerical results verify the presented EE-SE tradeoff. It is shown that the geometric parameters and the LED turn-on voltage (TOV) can significantly affect the relationship of the EE and SE.

Original languageEnglish
Title of host publication2016 IEEE/CIC International Conference on Communications in China (ICCC 2016)
PublisherIEEE
ISBN (Electronic)9781509021437
DOIs
Publication statusPublished - 24 Oct 2016
Event2016 IEEE/CIC International Conference on Communications in China - Chengdu, China
Duration: 27 Jul 201629 Jul 2016

Conference

Conference2016 IEEE/CIC International Conference on Communications in China
Abbreviated titleICCC 2016
CountryChina
CityChengdu
Period27/07/1629/07/16

Keywords

  • energy efficiency
  • energy-spectral efficiency tradeoff
  • LED
  • spectral efficiency
  • VLC

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing

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  • Cite this

    Li, E., Zhang, W., Sun, J., Wang, C-X., & Ge, X. (2016). Energy-spectral efficiency tradeoff of visible light communication systems. In 2016 IEEE/CIC International Conference on Communications in China (ICCC 2016) [7636850] IEEE. https://doi.org/10.1109/ICCChina.2016.7636850