A DCO-OFDM system employing beneficial clipping method

Xiaojing Zhang, Peng Liu, Jiang Liu, Song Liu

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

1 Citation (Scopus)

Abstract

The existing clipping researches in direct current biased optical orthogonal frequency division multiplexing (DCO-OFDM) systems generally originate from insufficient DC bias and the nonlinear transmission characteristics of physical devices which will distort the system performances. In contrast to conventional clipping theories, the beneficial clipping method demonstrated in this paper aims to improve the transmission effects of DCO-OFDM systems. Using the Bussgang theorem, the signal to noise ratio (SNR) and bit error ratio (BER) of DCO-OFDM systems with the beneficial clipping method are modeled mathematically. It is found that the beneficial clipping method can effectively reduce the system BER, compared with the no clipping situation, when the clipping ratio is mapped over an appropriate range. Also, the optimal clipping ratio changes with variation of the modulation depth. These results illustrate that the beneficial clipping method can enhance the performance of DCO-OFDM systems, although it does introduce clipping noise.

Original languageEnglish
Title of host publicationProceedings of the 2015 ITU Kaleidoscope: Trust in the Information Society, K-2015 - Academic Conference
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Print)9789261158217
DOIs
Publication statusPublished - 2016 Jan 14
Event7th ITU Kaleidoscope: Trust in the Information Society, K-2015 - Barcelona, Spain
Duration: 2015 Dec 92015 Dec 11

Other

Other7th ITU Kaleidoscope: Trust in the Information Society, K-2015
CountrySpain
CityBarcelona
Period15/12/915/12/11

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Keywords

  • clipping
  • light emitting diode
  • nonlinear distortion
  • orthogonal frequency division multiplexing
  • Visible light communication

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Safety, Risk, Reliability and Quality

Cite this

Zhang, X., Liu, P., Liu, J., & Liu, S. (2016). A DCO-OFDM system employing beneficial clipping method. In Proceedings of the 2015 ITU Kaleidoscope: Trust in the Information Society, K-2015 - Academic Conference [7383638] Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/Kaleidoscope.2015.7383638