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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 19, Iss. 17 — Aug. 15, 2011
  • pp: 16174–16181

Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols

Chun Ju Youn, Xiang Liu, S. Chandrasekhar, Yong-Hwan Kwon, Jong-Hoi Kim, Joong-Seon Choe, Duk-Jun Kim, Kwang-Seong Choi, and Eun Soo Nam  »View Author Affiliations


Optics Express, Vol. 19, Issue 17, pp. 16174-16181 (2011)
http://dx.doi.org/10.1364/OE.19.016174


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Abstract

We propose and demonstrate the use of subcarrier/polarization-interleaved training symbols for channel estimation and synchronization in polarization-division multiplexed (PDM) coherent optical orthogonal frequency-division multiplexed (CO-OFDM) transmission. The principle, the computational efficiency, and the frequency-offset tolerance of the proposed method are described. We show that the use of subcarrier/polarization interleaving doubles the tolerance to the frequency offset between the transmit laser and the receiver’s optical local oscillator as compared to conventional schemes. Using this method, we demonstrate 43-Gb/s PDM CO-OFDM transmission with 16-QAM subcarrier modulation over 5,200-km of ultra-large-area fiber.

© 2011 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: May 25, 2011
Revised Manuscript: July 17, 2011
Manuscript Accepted: July 21, 2011
Published: August 9, 2011

Citation
Chun Ju Youn, Xiang Liu, S. Chandrasekhar, Yong-Hwan Kwon, Jong-Hoi Kim, Joong-Seon Choe, Duk-Jun Kim, Kwang-Seong Choi, and Eun Soo Nam, "Channel estimation and synchronization for polarization-division multiplexed CO-OFDM using subcarrier/polarization interleaved training symbols," Opt. Express 19, 16174-16181 (2011)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-19-17-16174


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References

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