A Survey on FEC Codes for 100 G and beyond Optical Networks

Georgios Tzimpragos, Christoforos Kachris, Ivan B. Djordjevic, Milorad Cvijetic, Dimitrios Soudris, Ioannis Tomkos

Research output: Contribution to journalReview articlepeer-review

123 Scopus citations


Due to the rapid increase in network traffic in the last few years, many telecommunication operators have started transitions to 100-Gb/s optical networks and beyond. However, high-speed optical networks need more efficient forward error correction (FEC) codes to deal with optical impairments, such as uncompensated chromatic dispersion, polarization mode dispersion, and nonlinear effects, and keep the bit error rate (BER) at long distances sufficiently low. To address these issues, new FEC codes, called third-generation codes, have been proposed. A majority of these codes are based on soft-decision decoders and can provide higher coding gain as compared with their predecessors. This paper presents a thorough survey of third-generation FEC codes, suitable for 100 G and beyond optical networks. Furthermore, this paper discusses the main advantages and drawbacks of each scheme and provides a qualitative categorization and comparison of the proposed schemes based on their main features, such as net coding gain and BER. Information about the complexity of each scheme is given as well.

Original languageEnglish (US)
Article number6917198
Pages (from-to)209-221
Number of pages13
JournalIEEE Communications Surveys and Tutorials
Issue number1
StatePublished - Jan 1 2016


  • 100 G
  • 3rd generation
  • Error control coding (ECC)
  • forward error correction (FEC)
  • optical networks
  • survey

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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