NLIN Mitigation Using Turbo Equalization and an Extended Kalman Smoother

Ori Golani, Meir Feder, Mark Shtaif

Research output: Contribution to journalArticlepeer-review

Abstract

We develop a method for inter-channel nonlinear interference noise (NLIN) mitigation, based on Turbo equalization and an extended Kalman smoother. The method exploits both the unique statistical properties of NLIN and soft-decision information from the code structure, to obtain improved channel state estimation and symbol detection. The error-free information rate is improved by up to 0.3 b/symbols/polarization, for a 1000 km, 64-QAM, 32 Gbaud transmission over standard fiber.

Original languageEnglish
Article number8624343
Pages (from-to)1885-1892
Number of pages8
JournalJournal of Lightwave Technology
Volume37
Issue number9
DOIs
StatePublished - 1 May 2019

Keywords

  • Nonlinear interference
  • nonlinearity mitigation
  • optical fiber communication
  • time varying inter symbol interference

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