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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 16, Iss. 26 — Dec. 22, 2008
  • pp: 21944–21957

Intra-symbol frequency-domain averaging based channel estimation for coherent optical OFDM

Xiang Liu and Fred Buchali  »View Author Affiliations

Optics Express, Vol. 16, Issue 26, pp. 21944-21957 (2008)

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We present an efficient channel estimation method for coherent optical OFDM (CO-OFDM) based on intra-symbol frequency-domain averaging (ISFA), and systematically study its robustness against transmission impairments such as optical noise, chromatic dispersion (CD), polarization-mode dispersion (PMD), polarization-dependent loss (PDL), and fiber nonlinearity. Numerical simulations are performed for a 112-Gb/s polarization-division multiplexed (PDM) CO-OFDM signal, and the ISFA-based channel estimation and the subsequent channel compensation are found to be highly robust against these transmission impairments in typical optical transport systems.

© 2008 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.5060) Fiber optics and optical communications : Phase modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: September 16, 2008
Revised Manuscript: November 14, 2008
Manuscript Accepted: December 15, 2008
Published: December 18, 2008

Xiang Liu and Fred Buchali, "Intra-symbol frequency-domain averaging based channel estimation for coherent optical OFDM," Opt. Express 16, 21944-21957 (2008)

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