Adaptive CD estimation for coherent optical receivers based on timing error detection

Dawei Wang, Chao Lu, Pak Tao Lau, Ping Kong Alexander Wai, Sailing He

Research output: Journal article publicationJournal articleAcademic researchpeer-review

10 Citations (Scopus)


An adaptive chromatic dispersion (CD) compensation algorithm based on Lee's timing error detector (TED) is proposed for coherent communication systems. By combining both the in-phase and quadrature component of the timing phase estimate parameter that is in Lee's TED, a CD estimation parameter insensitive to other transmission impairments can be generated. The proposed estimation method requires many fewer symbols compared with other methods based on blind linear CD search. In addition, the proposed technique is largely based on feed-forward timing phase recovery and requires very few additional resources from the hardware implementation point of view. Simulation results for polarization-division multiplexed quaternary phaseshift keying as well as 16-quadrature amplitude modulation systems using non-return-to-zero and Nyquist pulse in the presence of various channel distortions show that high CD estimation accuracies can be achieved.
Original languageEnglish
Article number6502203
Pages (from-to)985-988
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number10
Publication statusPublished - 22 May 2013


  • Chromatic dispersion (CD) compensation
  • coherent detection
  • digital signal processing (DSP)

ASJC Scopus subject areas

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

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