Low-Complexity and Phase Noise Tolerant Carrier Phase Estimation for Dual-Polarization 16-QAM Systems

Yuliang Gao, Alan Pak Tao Lau, Shuangyi Yan, Chao Lu

Research output: Contribution to journalArticle (Academic Journal)peer-review

Abstract

A low-complexity feed-forward carrier phase estimation (CPE) technique is presented for dual-polarization (DP)-16-QAM transmission systems. By combining QPSK partitioning, maximum likelihood (ML) detection and phase offset estimation between signals in different polarizations, simulation and experimental results for a 200Gb/s DP-16-QAM system demonstrate similar linewidth tolerance to the best feed-forward CPE reported to date while the computational complexity is at least three times lower compared with other simplified feed-forward CPE techniques.
Original languageEnglish
Pages (from-to)21717-21729
Number of pages13
JournalOptics Express
Volume19
Issue number22
DOIs
Publication statusPublished - 24 Oct 2011

Keywords

  • Phase estimation
  • Phase noise
  • Phase recovery
  • Quadrature amplitude modulation
  • Real time implementation
  • Signal processing

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