OSA's Digital Library

Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 18, Iss. 20 — Sep. 27, 2010
  • pp: 21308–21314

Transmitter IQ mismatch compensation in coherent optical OFDM systems using pilot signals

Wonzoo Chung  »View Author Affiliations

Optics Express, Vol. 18, Issue 20, pp. 21308-21314 (2010)

View Full Text Article

Enhanced HTML    Acrobat PDF (7814 KB)

Browse Journals / Lookup Meetings

Browse by Journal and Year


Lookup Conference Papers

Close Browse Journals / Lookup Meetings

Article Tools



Transmitter in-phase/quadrature (IQ) mismatch in coherent optical orthogonal frequency division multiplexing (CO-OFDM) systems is difficult to mitigate at the receiver using conventional time domain methods such as the Gram-Schmidt orthogonalization procedure, particularly in the presence of channel distortion. In this paper, we present a scheme that mitigates both transmitter IQ mismatch and channel distortion. We propose a pilot structure to estimate both channel and IQ mismatch, and develop a minimum mean square error compensation method. Numerical results show that the proposed method is effective in reducing transmitter IQ mismatch for a CO-OFDM system.

© 2010 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: August 12, 2010
Revised Manuscript: September 14, 2010
Manuscript Accepted: September 17, 2010
Published: September 22, 2010

Wonzoo Chung, "Transmitter IQ mismatch compensation in coherent optical OFDM systems using pilot signals," Opt. Express 18, 21308-21314 (2010)

Sort:  Author  |  Year  |  Journal  |  Reset  


  1. I. B. Djordjevic and B. Vasic, “Orthogonal frequency division multiplexing for high-speed optical transmission,” Opt. Express 14(9), 3767–3775 (2006). [CrossRef] [PubMed]
  2. W. Shieh, H. Bao, and Y. Tang, “Coherent optical OFDM: theory and design,” Opt. Express 16(2), 841–859 (2008). [CrossRef] [PubMed]
  3. J. Armstrong, “OFDM for optical communications,” J. Lightwave Technol. 27(3), 189–204 (2009). [CrossRef]
  4. H. S. Chung, S. H. Chung, and K. Kim, “Effect of IQ mismatch compensation in an optical coherent OFDM receiver,” IEEE Photon. Technol. Lett. 22(5), 308–310 (2010). [CrossRef]
  5. X. Yi, W. Shieh, and Y. Tang, “Phase Estimation for Coherent Optical OFDM,” IEEE Photon. Technol. Lett. 19(12), 919–921 (2007). [CrossRef]
  6. I. Fatadin, S. J. Savory, and D. Ives, “Compensation of quadrature imbalance in an optical QPSK Coherent Receiver,” IEEE Photon. Technol. Lett. 20(20), 1733–1735 (2008). [CrossRef]
  7. A. A. Amin, H. Takahashi, S. L. Jansen, I. Morita, and H. Tanaka, “Effect of hybrid IQ imbalance compensation in 27.3 Gbit/s direct-detection OFDM transmission,” in Proc. OFC2009, San Diego, CA, 2009, Paper OTuO2.
  8. W. R. Peng, B. Zhang, X. Wu, K. M. Feng, A. E. Willner, and S. Chi, “Compensation for I/Q imbalances and bias deviation of the Mach-Zehnder modulators in direct-detected optical OFDM systems,” IEEE Photon. Technol. Lett. 21(2), 103–105 (2009). [CrossRef]
  9. S. L. Jansen, I. Morita, T. C. W. Schenk, and H. Tanaka, “121.9-Gb/s PDM-OFDM Transmission with 2-b/s/Hz Spectral Efficiency over 1,000 km of SSMF,” J. Lightwave Technol. 27(3), 177–188 (2009). [CrossRef]
  10. S. G. Kang, Y. M. Ha, and E. K. Joo, “A Comparative Investigation on Channel Estimation Algorithms for OFDM in Mobile Communications,” IEEE Trans. Broadcast 49(2), 142–149 (2003). [CrossRef]
  11. M. K. Ozdemir and H. Arslan, “Channel Estimation for wireless OFDM systems,” IEEE Comm. Surveys & Tutorials 9(2), 18–48 (2007). [CrossRef]

Cited By

Alert me when this paper is cited

OSA is able to provide readers links to articles that cite this paper by participating in CrossRef's Cited-By Linking service. CrossRef includes content from more than 3000 publishers and societies. In addition to listing OSA journal articles that cite this paper, citing articles from other participating publishers will also be listed.

« Previous Article  |  Next Article »

OSA is a member of CrossRef.

CrossCheck Deposited