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 publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7988
DOIs
StatePublished - 2011
EventOptical Transmission Systems, Switching, and Subsystems VIII - Shanghai, China
Duration: Dec 8 2010Dec 12 2010

Other

OtherOptical Transmission Systems, Switching, and Subsystems VIII
CountryChina
CityShanghai
Period12/8/1012/12/10

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decoders
Light transmission
Coding Gain
LDPC Codes
constellations
Girth
Latency
coding
Data storage equipment
requirements
Evaluate
Requirements
products

Keywords

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

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Djordjevic, I. B., Xu, L., & Wang, T. (2011). On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7988). [79881G] https://doi.org/10.1117/12.888344

On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. / Djordjevic, Ivan B; Xu, Lei; Wang, Ting.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7988 2011. 79881G.

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

Djordjevic, IB, Xu, L & Wang, T 2011, On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7988, 79881G, Optical Transmission Systems, Switching, and Subsystems VIII, Shanghai, China, 12/8/10. https://doi.org/10.1117/12.888344
Djordjevic IB, Xu L, Wang T. On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7988. 2011. 79881G https://doi.org/10.1117/12.888344
Djordjevic, Ivan B ; Xu, Lei ; Wang, Ting. / On the reduced-complexity of LDPC decoders for beyond 400 Gb/s serial optical transmission. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7988 2011.
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