Four-dimensional coded optical OFDM for ultra-high-speed metro networks

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

1 Scopus citations


As response to continuously increasing demands on transmission capacity, we describe a four-dimensional (4D) coded multicarrier/OFDM schemes suitable for metro and long-haul optical networks, which are capable to fully exploit advantages of both multicarrier/OFDM and multidimensional systems. Two multidimensional coded modulation schemes are presented in this invited paper: (i) 4D multicarrier system in which the 4D signal constellation points are imposed on orthogonal subcarriers and (ii) N-dimensional OFDM scheme. In N-dimensional OFDM, the signal constellation points are represented in matrix form by placing coordinates of signal constellation points along columns of signal matrix. We further apply 2D inverse FFT to obtain 2D array of complex numbers. Coordinates of complex numbers can be considered as I and Q channels, while coordinates of 2D array can be mapped to two orthogonal polarizations; resulting in 4D signal space. On receiver side, we use conventional polarization-diversity receiver, followed by 2D-FFT demapper. Therefore, these schemes can fully exploit advantages of OFDM, to deal with chromatic dispersion, PMD and PDL effects; and multidimensional signal constellations to improve dramatically OSNR sensitivity of conventional optical OFDM systems.

Original languageEnglish (US)
Title of host publicationOptical Metro Networks and Short-Haul Systems III
StatePublished - 2011
EventOptical Metro Networks and Short-Haul Systems III - San Francisco, CA, United States
Duration: Jan 25 2011Jan 27 2011

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X


OtherOptical Metro Networks and Short-Haul Systems III
Country/TerritoryUnited States
CitySan Francisco, CA


  • Low-density parity-check (LDPC) codes
  • Modulation
  • Multidimensional signal constellations
  • Orthogonal frequency division multiplexing (OFDM)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


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