LED nonlinearity impact on Frequency Modulation signals over Visible Light Communication systems

Haiyu Zhang, Peng Liu, Qianshuo Li, Jiang Liu, Song Liu

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

3 Citations (Scopus)

Abstract

In optical wireless communication systems using LED transmitters, the performance will be degraded due to the nonlinearity of LEDs. In this paper, analog Frequency Modulation over Visible Light Communication (FM-VLC) systems considering the influence of LED nonlinearity is investigated. The nonlinearity impact to carrier-to-noise ratio (CNR) and signal-to-noise ratio (SNR) is numerically analyzed and simulated. Moreover, an experiment that transmission of FM signal over VLC is setup with the results are given. For FM-VLC system based on nonlinear LED model, SNR is 5dB lower than that based on linear LED model, when modulation index n=1 which is the worst nonlinearity condition. Meanwhile, FM index is an important parameter that influence on the system performance. CNR changed little but SNR has a great improvement with FM index increasing. When FM index m 1, transmission of Wide-Band FM (WBFM) signals, SNR is higher than CNR, and low CNR can adopt high SNR. It is more suitable for transmission of WBFM signals than NBFM signals over VLC system.

Original languageEnglish
Title of host publication2015 IEEE International Conference on Communication Problem-Solving, ICCP 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages369-372
Number of pages4
ISBN (Electronic)9781467365437
DOIs
Publication statusPublished - 2016 Apr 15
Externally publishedYes
EventIEEE International Conference on Communication Problem-Solving, ICCP 2015 - Guilin, Guangxi, China
Duration: 2015 Oct 162015 Oct 18

Other

OtherIEEE International Conference on Communication Problem-Solving, ICCP 2015
CountryChina
CityGuilin, Guangxi
Period15/10/1615/10/18

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ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation

Cite this

Zhang, H., Liu, P., Li, Q., Liu, J., & Liu, S. (2016). LED nonlinearity impact on Frequency Modulation signals over Visible Light Communication systems. In 2015 IEEE International Conference on Communication Problem-Solving, ICCP 2015 (pp. 369-372). [7454177] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/ICCPS.2015.7454177