Decision-aided, pilot-aided, decision-feedback phase estimation for coherent optical OFDM systems

Shengjiao Cao, Pooi Yuen Kam, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

28 Citations (Scopus)


We propose two phase estimation methods for coherent optical orthogonal frequency-division multiplexing (OFDM) systems, the decision-aided (DA) plus pilot-aided (PA) scheme and DA plus decision feedback (DF) scheme. We further investigate the combinations of DA, PA, and DF in a simulated 40-Gb/s single polarization system. DA+PA helps to increase the phase noise tolerance of DA and reduce the overhead of PA, while DA+DF reduces the overhead to zero and achieves the best performance with one more step of estimation, compensation, and demodulation.
Original languageEnglish
Article number6316081
Pages (from-to)2067-2069
Number of pages3
JournalIEEE Photonics Technology Letters
Issue number22
Publication statusPublished - 26 Nov 2012
Externally publishedYes


  • Coherent
  • laser phase noise
  • orthogonal frequency-division multiplexing (OFDM)
  • phase estimation

ASJC Scopus subject areas

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


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