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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 4 — Feb. 24, 2014
  • pp: 4342–4348

Experimental demonstration of 30 Gb/s direct-detection optical OFDM transmission with blind symbol synchronisation using virtual subcarriers

R. Bouziane, P. A. Milder, S. Erkılınç, L. Galdino, S. Kilmurray, B. C. Thomsen, P. Bayvel, and R. I. Killey  »View Author Affiliations


Optics Express, Vol. 22, Issue 4, pp. 4342-4348 (2014)
http://dx.doi.org/10.1364/OE.22.004342


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Abstract

The paper investigates the performance of a blind symbol synchronisation technique for optical OFDM systems based on virtual subcarriers. The test-bed includes a real-time 16-QAM OFDM transmitter operating at a net data rate of 30.65 Gb/s using a single OFDM band with a single FPGA-DAC subsystem and demonstrates transmission over 23.3 km SSMF with direct detection at a BER of 10−3. By comparing the performance of the proposed synchronisation scheme with that of the Schmidl and Cox algorithm, it was found that the two approaches achieve similar performance for large numbers of averaging symbols, but the performance of the proposed scheme degrades as the number of averaging symbols is reduced. The proposed technique has lower complexity and bandwidth overhead as it does not rely on training sequences. Consequently, it is suitable for implementation in high speed optical OFDM transceivers.

© 2014 Optical Society of America

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

ToC Category:
Optical Communications

History
Original Manuscript: December 20, 2013
Revised Manuscript: January 31, 2014
Manuscript Accepted: January 31, 2014
Published: February 18, 2014

Citation
R. Bouziane, P. A. Milder, S. Erkılınç, L. Galdino, S. Kilmurray, B. C. Thomsen, P. Bayvel, and R. I. Killey, "Experimental demonstration of 30 Gb/s direct-detection optical OFDM transmission with blind symbol synchronisation using virtual subcarriers," Opt. Express 22, 4342-4348 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-4-4342


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References

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