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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 4 — Feb. 15, 2010
  • pp: 3919–3927

Data-aided adaptive weighted channel equalizer for coherent optical OFDM

Mohammad E. Mousa-Pasandi and David V. Plant  »View Author Affiliations


Optics Express, Vol. 18, Issue 4, pp. 3919-3927 (2010)
http://dx.doi.org/10.1364/OE.18.003919


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Abstract

We report an adaptive weighted channel equalizer (AWCE) for orthogonal frequency division multiplexing (OFDM) and study its performance for long-haul coherent optical OFDM (CO-OFDM) transmission systems. This equalizer updates the equalization parameters on a symbol-by-symbol basis thus can track slight drifts of the optical channel. This is suitable to combat polarization mode dispersion (PMD) degradation while increasing the periodicity of pilot symbols which can be translated into a significant overhead reduction. Furthermore, AWCE can increase the precision of RF-pilot enabled phase noise estimation in the presence of noise, using data-aided phase noise estimation. Simulation results corroborate the capability of AWCE in both overhead reduction and improving the quality of the phase noise compensation (PNC).

© 2010 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4080) Fiber optics and optical communications : Modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 9, 2009
Revised Manuscript: January 14, 2010
Manuscript Accepted: February 1, 2010
Published: February 12, 2010

Citation
Mohammad E. Mousa-Pasandi and David V. Plant, "Data-aided adaptive weighted channel equalizer for coherent optical OFDM," Opt. Express 18, 3919-3927 (2010)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-18-4-3919


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