Optimal Constellation Shaping in Optical Communication Systems

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

1 Scopus citations

Abstract

In optical communications systems, Shannon limit can be closely approached by properly chosen constellation shaping schemes. Both probabilistic shaping (PS) and geometric shaping(GS) can be applied to M-ary quadrature amplitude modulation (QAM) to obtain the shaping gain. In this invited paper, mutual information (MI) is used as a metric to analyze the performances of regular/GS/PS-8/16QAM formats. In a linear amplified spontaneous emission (ASE) noise dominated system, our numerical results show that the MI performances of the GS-8/16QAM are better than that of regular 8/16QAM and PS-8/16QAM. Then we experimentally compare the performances of regular/GS/PS-16QAM formats over a 100km fiber transmission link. Our numerical and experimental results are very useful in selection of the optimal constellation shaping for a given optical communication system.

Original languageEnglish (US)
Title of host publication2018 20th International Conference on Transparent Optical Networks, ICTON 2018
PublisherIEEE Computer Society
Volume2018-July
ISBN (Electronic)9781538666043
DOIs
StatePublished - Sep 26 2018
Event20th International Conference on Transparent Optical Networks, ICTON 2018 - Bucharest, Romania
Duration: Jul 1 2018Jul 5 2018

Other

Other20th International Conference on Transparent Optical Networks, ICTON 2018
CountryRomania
CityBucharest
Period7/1/187/5/18

Keywords

  • geometric shaping
  • mutual information
  • probabilistic shaping
  • quadrature amplitude modulation

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Qu, Z., & Djordjevic, I. B. (2018). Optimal Constellation Shaping in Optical Communication Systems. In 2018 20th International Conference on Transparent Optical Networks, ICTON 2018 (Vol. 2018-July). [8473961] IEEE Computer Society. https://doi.org/10.1109/ICTON.2018.8473961