Multidimensional LDPC-coded modulation for beyond 400 Gb/s per wavelength transmission

Hussam G. Batshon, Ivan B. Djordjevic, Lei Xu, Ting Wang

Research output: Contribution to journalArticlepeer-review

35 Scopus citations


In this letter, we propose a multidimensional low-density parity-check-coded modulation scheme suitable for use in up to 400 Gb/s per wavelength transmission, using currently available commercial components operating at 40 gigasymbols/s. We show that we can achieve multiples of the current transmission speed with negligible penalty. At the same time, using this scheme, the transmission and signal processing are done at 40 gigasymbols/s, where dealing with all the nonlinear effects is more convenient and the polarization-mode dispersion is more manageable. In addition, we show that using the proposed technique, we can achieve an improvement ranging from 3 dB over 8-quadrature-amplitude modulation (QAM) to 14 dB over 256-QAM, and an improvement of up to 9.75 dB over the 256-3D-constellation at bit-error ratio (BER) of 10-9. We also show that we can reach the 400-Gb/s aggregate rate with a coding gain of 10.75 dB at BER of 10-12.

Original languageEnglish (US)
Pages (from-to)1139-1141
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number16
StatePublished - Aug 15 2009
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


  • High-speed optical transmission
  • Low-density parity-check (LDPC) codes
  • Multidimensional-coded modulation
  • Optical communications
  • Polarization-mode dispersion (PMD)


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