Blind equalization in optical communications using independent component analysis

Alon Nafta, Pontus Johannisson, Mark Shtaif

Research output: Contribution to journalArticlepeer-review


We propose a multi-tap independent component analysis (ICA) scheme for blind equalization and phase recovery in coherent optical communication systems. The proposed algorithm is described and evaluated in the cases of QPSK and 16-QAM transmission. Comparison with CMA equalization shows similar performance in the case of QPSK and an advantage for the ICA equalizer in the case of 16-QAM. The equalization scheme was evaluated in a multi-span optical communications system impaired by both polarization mode dispersion (PMD) and polarization dependent loss (PDL).

Original languageEnglish
Article number6517209
Pages (from-to)2043-2049
Number of pages7
JournalJournal of Lightwave Technology
Issue number12
StatePublished - 2013


  • Coherent communication
  • equalization
  • independent component analysis (ICA)
  • optical fiber communication


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