Optimum signal constellation design for ultra-high-speed optical transport networks

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


In this invited paper we analyze several strategies that can be used facilitate the implementation of 400 GbE and 1 TbE technologies with respect to signal-constellation design and propose the use of optimum signal constellations instead of conventional QAM scheme. The proposed signal constellation designs can be used in combination with large-girth LDPC codes to solve both the bandwidth and energy-efficiency problems of future Ethernet technologies. We further describe several hybrid coded-modulation (CM) schemes that enable multi-terabit serial optical transport, including energy-efficient D-dimensional CM, mode-multiplexed four dimensional CM, and mode-multiplexed generalized-OFDM.

Original languageEnglish (US)
Title of host publicationInternational Conference on Transparent Optical Networks
Publication statusPublished - 2012
Event14th International Conference on Transparent Optical Networks, ICTON 2012 - Coventry, United Kingdom
Duration: Jul 2 2012Jul 5 2012


Other14th International Conference on Transparent Optical Networks, ICTON 2012
CountryUnited Kingdom



  • coded-modulation
  • low-density parity-check (LDPC) codes
  • modulation
  • multiplexing
  • Optical networks
  • orbital angular momentum (OAM)
  • signal constellation design

ASJC Scopus subject areas

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

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