A performance investigation of adaptive phase estimations in coherent optical communications

Shaoliang Zhang, Lei Xu, Pooi Yuen Kam, Changyuan Yu, Jian Chen, Ting Wang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

4 Citations (Scopus)


We carried out a comprehensive analysis to examine the phase error variances in three adaptive phase estimation (PE) methods: the adaptive decision-aided PE, the Kalman PE, and the normalized least-mean square PE algorithms. The results show that they share the same phase error variances but with different approaches to determine the stepsize. Their performances in different quadrature amplitude modulation formats are analytically investigated for the purpose of determining the laser linewidth tolerance.
Original languageEnglish
Article number5703109
Pages (from-to)462-464
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number8
Publication statusPublished - 30 Mar 2011
Externally publishedYes


  • Adaptive receiver
  • coherent detection
  • laser phase noise
  • phase estimation (PE)
  • quadrature amplitude modulation (QAM)

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Electrical and Electronic Engineering


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