Optimal Constellation Shaping in Optical Communication Systems

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

10 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
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

Publication series

NameInternational Conference on Transparent Optical Networks
Volume2018-July
ISSN (Electronic)2162-7339

Other

Other20th International Conference on Transparent Optical Networks, ICTON 2018
Country/TerritoryRomania
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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