On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission

Ivan B Djordjevic, Lei Xu, Ting Wang

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

Abstract

Two reduced-complexity (RC) LDPC decoders are proposed, which can be used in combination with large-girth LDPC codes to enable beyond 400 Gb/s serial optical transmission. We show that optimally attenuated RC min-sum sum algorithm performs only 0.45 dB worse than conventional sum-product algorithm, while having lower storage memory requirements and much lower latency. We further evaluate the proposed algorithms for use in beyond 400 Gb/s serial optical transmission in combination with PolMUX 32-IPQ-based signal constellation and show that low BERs can be achieved for medium optical SNRs, while achieving the net coding gain above 11.4 dB.

Original languageEnglish (US)
Title of host publicationAsia Communications and Photonics Conference and Exhibition, ACP 2010
PublisherOptical Society of America (OSA)
ISBN (Print)9780819485540
StatePublished - 2010
EventAsia Communications and Photonics Conference and Exhibition, ACP 2010 - Shanghai, China
Duration: Dec 8 2010Dec 12 2010

Other

OtherAsia Communications and Photonics Conference and Exhibition, ACP 2010
CountryChina
CityShanghai
Period12/8/1012/12/10

Keywords

  • Coherent detection
  • Forward error correction (FEC)
  • Low-density parity-check (LDPC) codes
  • Optical communications
  • Reduced complexity (RC) LDPC decoders

ASJC Scopus subject areas

  • Instrumentation
  • Atomic and Molecular Physics, and Optics

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    Djordjevic, I. B., Xu, L., & Wang, T. (2010). On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. In Asia Communications and Photonics Conference and Exhibition, ACP 2010 Optical Society of America (OSA).