Suppression of fiber nonlinearities and PMD in coded-modulation schemes with coherent detection by using turbo equalization

Ivan B. Djordjevic, Lyubomir L. Minkov, Lei Xu, Ting Wang

Research output: Contribution to journalArticle

54 Scopus citations

Abstract

We propose a maximum a posteriori probability (MAP) turbo equalizer based on the sliding-window multilevel Bahl-Cocke-Jelinek-Raviv algorithm. This scheme is suitable for simultaneous nonlinear and linear impairment mitigation in multilevel coded-modulation schemes with coherent detection. The proposed scheme employs large-girth quasi-cyclic LDPC codes as channel codes. We demonstrate the efficiency of this method in dealing with fiber nonlinearities by performing Monte Carlo simulations. In addition, we provide the experimental results that demonstrate the efficiency of this method in dealing with polarization mode dispersion. We also study the ultimate channel capacity limits, assuming an independent identically distributed source.

Original languageEnglish (US)
Article number5308590
Pages (from-to)555-564
Number of pages10
JournalJournal of Optical Communications and Networking
Volume1
Issue number6
DOIs
StatePublished - Nov 1 2009

Keywords

  • Coherent detection
  • Fiber nonlinearities
  • Fiber-optics communications
  • LDPC codes
  • Multilevel MAP detection
  • Multilevel coded modulation
  • Turbo equalization

ASJC Scopus subject areas

  • Computer Networks and Communications

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