Time-domain blind ICI mitigation for non-constant modulus format in CO-OFDM

Shengjiao Cao, Pooi Yuen Kam, Changyuan Yu

Research output: Journal article publicationJournal articleAcademic researchpeer-review

25 Citations (Scopus)


In this letter, we propose a modified time-domain blind intercarrier interference (ICI) mitigation method for non-constant modulus format (e.g., 16-QAM) in coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems. The new algorithm is derived from a blind ICI (BL-ICI) compensation algorithm over constant modulus format for wireless networks. We proposed new power estimation methods for the algorithm to adapt to non-constant modulus format. Our new BL-ICI algorithm is demonstrated to be effective in removing the ICI in a simulated CO-OFDM system over various formats: 8-QAM, 16-QAM, 32-QAM and 64-QAM. It shares the same order of complexity with frequency domain decision-aided ICI compensation method and does not suffer from symbol decision errors.
Original languageEnglish
Article number6654266
Pages (from-to)2490-2493
Number of pages4
JournalIEEE Photonics Technology Letters
Issue number24
Publication statusPublished - 15 Dec 2013
Externally publishedYes


  • ICI
  • laser phase noise
  • phase estimation
  • QAM

ASJC Scopus subject areas

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

Cite this