FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems

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

Abstract

In this invited paper, we describe a rate-adaptive FEC scheme based on LDPC codes together with its software reconfigurable unified FPGA architecture. By FPGA emulation, we demonstrate that this class of rate-adaptive LDPC codes based on shortening with an overhead from 25% to 42.9% provides a coding gain ranging from 13.08 dB to 14.28 dB at a post-FEC BER of 10-15 for BPSK transmission. In addition, the proposed rate-adaptive LDPC coding combined with higher-order modulations have been demonstrated including QPSK, 8-QAM, 16-QAM, 32-QAM, and 64-QAM, which covers a wide range of signal-to-noise ratios. Furthermore, we apply the unequal error protection by employing different LDPC codes on different bits in 16-QAM and 64-QAM, which results in additional 0.5 dB gain compared to conventional LDPC coded modulation with the same code rate of corresponding LDPC code.

Original languageEnglish (US)
Title of host publicationICTON 2017 - 19th International Conference on Transparent Optical Networks
PublisherIEEE Computer Society
ISBN (Electronic)9781538608586
DOIs
StatePublished - Sep 1 2017
Event19th International Conference on Transparent Optical Networks, ICTON 2017 - Girona, Catalonia, Spain
Duration: Jul 2 2017Jul 6 2017

Publication series

NameInternational Conference on Transparent Optical Networks
ISSN (Electronic)2162-7339

Other

Other19th International Conference on Transparent Optical Networks, ICTON 2017
CountrySpain
CityGirona, Catalonia
Period7/2/177/6/17

Keywords

  • coherent communication
  • field programmable gate array (FPGA)
  • low-density parity-check (LDPC)
  • optical communications

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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  • Cite this

    Djordjevic, I. B., & Zou, D. (2017). FPGA-based rate-adaptive LDPC-coded modulation for the next generation of optical communication systems. In ICTON 2017 - 19th International Conference on Transparent Optical Networks [8024788] (International Conference on Transparent Optical Networks). IEEE Computer Society. https://doi.org/10.1109/ICTON.2017.8024788