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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 21, Iss. 2 — Jan. 28, 2013
  • pp: 2500–2505

Fast dispersion estimation in coherent optical 16QAM fast OFDM systems

J. Zhao and H. Shams  »View Author Affiliations


Optics Express, Vol. 21, Issue 2, pp. 2500-2505 (2013)
http://dx.doi.org/10.1364/OE.21.002500


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Abstract

Fast channel estimation is crucial to increase the payload efficiency which is of particular importance for optical packet networks. In this paper, we propose a novel least-square based dispersion estimation method in coherent optical fast OFDM (F-OFDM) systems. Additionally, we experimentally demonstrate for the first time a 37.5 Gb/s 16QAM coherent F-OFDM system with 480 km transmission using the proposed scheme. The results show that this method outperforms the conventional channel estimation methods in minimizing the overhead load. A single training symbol can achieve near-optimum channel estimation without any prior information of the transmission distance. This makes optical F-OFDM a very promising scheme for the future burst-mode applications.

© 2013 OSA

OCIS Codes
(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: December 3, 2012
Revised Manuscript: January 10, 2013
Manuscript Accepted: January 17, 2013
Published: January 25, 2013

Citation
J. Zhao and H. Shams, "Fast dispersion estimation in coherent optical 16QAM fast OFDM systems," Opt. Express 21, 2500-2505 (2013)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-21-2-2500


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References

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