Bit loading-based irregular LDPC coded-modulation for high-speed optical communications

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

Abstract

In state-of-the-art fibre-optics communication systems, the forward error correction (FEC) and high-order constellation formats are employed. It is important to approach the Shannon limit by using turbo product codes (TPC) and low-density parity-check (LDPC) codes with soft-decision decoding (SDD) algorithms. In this paper, we first study the rate-adaptive irregular LDPC coding technique in wide range of code rates enabling the flexible adjustment according to channel conditions and the simulation results show an improved SNR gain of 0.15 ∼ 0.44 dB compared with regular LDPC codes under BPSK transmission. Then we propose a bit-loading rule for irregular LDPC codes combined with 16QAM and demonstrate additional 0.3 dB SNR improvements in low code rate regime, making it a viable solution for next generation high-speed optical communication systems.

Original languageEnglish (US)
Title of host publication2016 18th International Conference on Transparent Optical Networks, ICTON 2016
PublisherIEEE Computer Society
ISBN (Electronic)9781509014675
DOIs
StatePublished - Aug 23 2016
Event18th International Conference on Transparent Optical Networks, ICTON 2016 - Trento, Italy
Duration: Jul 10 2016Jul 14 2016

Publication series

NameInternational Conference on Transparent Optical Networks
Volume2016-August
ISSN (Electronic)2162-7339

Other

Other18th International Conference on Transparent Optical Networks, ICTON 2016
CountryItaly
CityTrento
Period7/10/167/14/16

Keywords

  • fibre-optics and optical communications
  • low-density parity-check (LDPC)

ASJC Scopus subject areas

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

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  • Cite this

    Zou, D., & Djordjevic, I. B. (2016). Bit loading-based irregular LDPC coded-modulation for high-speed optical communications. In 2016 18th International Conference on Transparent Optical Networks, ICTON 2016 [7550345] (International Conference on Transparent Optical Networks; Vol. 2016-August). IEEE Computer Society. https://doi.org/10.1109/ICTON.2016.7550345