Experimental evaluation of high-speed optical fiber communication using nonbinary LDPC coded modulation with layered decoding

Murat Arabaci, Ivan B. Djordjevic

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

Abstract

In this paper, we present a reduced-latency nonbinary low-density parity-check (LDPC) coded modulation scheme suitable for high-speed optical fiber communication featuring the layered LDPC decoding algorithm. The use of the layered decoder in place of the conventional flooding decoder helps reduce by half the number of iterations taken in decoding. This in turn reduces the decoding latency, increases the decoding throughput, and significantly lowers the power consumption at the receiving ends of optical transport networks. We show by using the experimental data collected from a 4-ary rate-0.8 LDPC-coded NRZ-DQPSK modulation system that layered decoding indeed halves the required number of decoding iterations. We also show that, in the back-to-back configuration, even with a single iteration of layered decoding, one can attain a 7 dB gain in performance at the bit error ratio (BER) of 10-5 when compared to using only the maximum a posteriori probability detector output based on the Bahl-Cocke-Jelinek-Raviv (BCJR) algorithm.

Original languageEnglish (US)
Title of host publication2011 13th International Conference on Transparent Optical Networks, ICTON 2011
DOIs
StatePublished - Nov 7 2011
Event2011 13th International Conference on Transparent Optical Networks, ICTON 2011 - Stockholm, Sweden
Duration: Jun 26 2011Jun 30 2011

Publication series

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

Other

Other2011 13th International Conference on Transparent Optical Networks, ICTON 2011
CountrySweden
CityStockholm
Period6/26/116/30/11

Keywords

  • forward error correction
  • layered decoding
  • low-density parity-check codes
  • nonbinary codes
  • optical fiber communication

ASJC Scopus subject areas

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

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  • Cite this

    Arabaci, M., & Djordjevic, I. B. (2011). Experimental evaluation of high-speed optical fiber communication using nonbinary LDPC coded modulation with layered decoding. In 2011 13th International Conference on Transparent Optical Networks, ICTON 2011 [5970877] (International Conference on Transparent Optical Networks). https://doi.org/10.1109/ICTON.2011.5970877