Nonbinary LDPC codes for optical communication systems

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54 Scopus citations


We propose a class of moderate-length nonbinary low-density parity-check (LDPC) codes for long-haul high-speed optical transmission systems. In particular, we present an LDPC code with 12.59% redundancy that achieves a 9.9-dB coding gain at a bit-error rate of 10-10. A similar coding gain is obtained for a long nonbinary LDPC code with a redundancy of only 6.7%.

Original languageEnglish (US)
Pages (from-to)2224-2226
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number10
StatePublished - Oct 2005


  • Forward-error correction (FEC)
  • GF(q)
  • Low-density parity-check (LDPC) codes
  • Optical communications

ASJC Scopus subject areas

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


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