Blind phase noise estimation for CO-OFDM transmissions

Son Thai Le, Paul A. Haigh, Andrew D. Ellis, Sergei K. Turitsyn

Research output: Contribution to journalArticle

Abstract

In this paper, we discuss in detail the performance of different blind phase noise estimation schemes for coherent optical orthogonal frequency-division multiplexing transmissions. We first derive a general model of such systems with phase noise. Based on this model, the phase cycle slip probability in blind phase noise estimation is calculated. For blind phase tracking, we present and discuss the implementation of feedback loop and digital phase tracking. We then analyze in detail the performance of a decision-direct-free blind scheme, in which only three test phases are required for phase noise compensation. We show that the decision-direct-free blind scheme is transparent to QAM formats, and can provide a similar performance to the conventional blind phase search employing 16 test phases. We also propose two novel cost functions to further reduce the complexity of this scheme.

Original languageEnglish
Pages (from-to)745-753
Number of pages9
JournalJournal of Lightwave Technology
Volume34
Issue number2
Early online date17 Aug 2015
DOIs
Publication statusPublished - 15 Jan 2016

Bibliographical note

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Funding: EPSRC Program UNLOC (EP/J017582/1) and PEACE (EP/L000091/1); and EC FP7 FOX-C (318415).

Keywords

  • coherent
  • orthogonal frequency division multiplexing
  • phase estimation
  • phase noise

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