FPGA implementation of concatenated nonbinary QC-LDPC codes for high-speed optical transport

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In this paper, we propose a soft-decision-based FEC scheme that is the concatenation of a non-binary LDPC code and hard-decision FEC code. The proposed NB-LDPC + RS with overhead of 27.06% provides a superior NCG of 11.9dB at a post-FEC BER of 10-15. As a result, the proposed NB-LDPC codes represent the strong FEC candidate of softdecision FEC for beyond 100Gb/s optical transmission systems.

Original languageEnglish (US)
Pages (from-to)14501-14509
Number of pages9
JournalOptics Express
Issue number11
StatePublished - Jun 1 2015


ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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