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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 19 — Sep. 23, 2013
  • pp: 22847–22853

A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM

Shengjiao Cao, Changyuan Yu, and Pooi-Yuen Kam  »View Author Affiliations


Optics Express, Vol. 21, Issue 19, pp. 22847-22853 (2013)
http://dx.doi.org/10.1364/OE.21.022847


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Abstract

We carry out a comprehensive analysis to examine the performance of our recently proposed correlation-based and pilot-tone-assisted frequency offset compensation method in coherent optical OFDM system. The frequency offset is divided into two parts: fraction part and integer part relative to the channel spacing. Our frequency offset scheme includes the correlation-based Schmidl algorithm for fraction part estimation as well as pilot-tone-assisted method for integer part estimation. In this paper, we analytically derive the error variance of fraction part estimation methods in the presence of laser phase noise using different correlation-based algorithms: Schmidl, Cox and Cyclic Prefix based. This analytical expression is given for the first time in the literature. Furthermore, we give a full derivation for the pilot-tone-assisted integer part estimation method using the OFDM model.

© 2013 OSA

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

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: June 5, 2013
Revised Manuscript: July 18, 2013
Manuscript Accepted: August 10, 2013
Published: September 20, 2013

Citation
Shengjiao Cao, Changyuan Yu, and Pooi-Yuen Kam, "A performance investigation of correlation-based and pilot-tone-assisted frequency offset compensation method for CO-OFDM," Opt. Express 21, 22847-22853 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-19-22847


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References

  1. T. Pollet, M. Van Bladel, and M. Moeneclaey, “BER sensitivity of OFDM systems to carrier frequency offset and wiener phase noise,” IEEE Trans. Commun.43(2), 191–193 (1995). [CrossRef]
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  5. F. Buchali, R. Dischler, M. Mayrock, X. Xiao, and Y. Tang, “Improved frequency offset correction in coherent optical OFDM systems,” in IEEE Proc. ECOC 2008, paper Mo.4.D.4.
  6. S. Fan, J. Yu, D. Qian, and G.-K. Chang, “A fast and efficient frequency offset correction technique for coherent optical orthogonal frequency division multiplexing,” J. Lightwave Technol.29(13), 1997–2004 (2011). [CrossRef]
  7. S. L. Jansen, I. Morita, T. C. W. Schenk, N. Takeda, and H. Tanaka, “Coherent Optical 25.8-Gb/s OFDM Transmission over 4,160-km SSMF,” J. Lightwave Technol.26(1), 6–15 (2008). [CrossRef]
  8. S. Cao, S. Zhang, C. Yu, and P.-Y. Kam, “Full-range pilot-assisted frequency offset estimation for OFDM systems,” in Proceedings of OFC/NFOEC 2013, paper JW2A.53.

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