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fbtwitterlinkedinvimeoflicker grey 14rssslideshare1
Publisher: IEEE
Languages: English
Types: Part of book or chapter of book
Subjects:
We experimentally investigate the channel estimation and compensation in a chromatic dispersion (CD) limited 20Gbit/s optical fast orthogonal frequency division multiplexing (F-OFDM) system with up to 840km transmission. It is shown that symmetric extension based guard interval (GI) is required to enable CD compensation using one-tap equalizers. As few as one optical F-OFDM symbol with four and six pilot tones per symbol can achieve near-optimal channel estimation and compensation performance for 600km and 840km respectively.
  • The results below are discovered through our pilot algorithms. Let us know how we are doing!

    • [1] J. Zhao and A.D. Ellis, “A novel optical fast OFDM with reduced channel spacing equal to half of the symbol rate per carrier,” Proceedings of Optical Fiber Communication Conference (OFC), paper OMR1, San Diego, CA, 2010.
    • [2] J. Zhao and A.D. Ellis, “Discrete-Fourier transform based implementation for optical fast OFDM,” Proceedings of European Conference on Optical Communication (ECOC), paper Tu.4.A.3, Torino, Italy, 2010.
    • [3] S.K. Ibrahim, J. Zhao, D. Rafique, J. O'Dowd, and A.D. Ellis “Demonstration of world-first experimental optical fast OFDM system at 7.174Gbit/s and 14.348Gbit/s,” Proceedings of European Conference on Optical Communication (ECOC), postdeadline paper PDP3.4, Torino, Italy, 2010.
    • [4] J. Zhao, S.K. Ibrahim, D. Rafique, P. Gunning, and A.D. Ellis, “Symbol synchronization exploiting the symmetric property in optical fast OFDM,” IEEE Photon. Technol. Lett., vol. 23, pp. 594-596, 2011.
    • [5] J. Zhao and A.D. Ellis, “Transmission of 4-ASK optical fast OFDM with chromatic dispersion compensation,” IEEE Photon. Technol. Lett., vol. 24, pp. 34-36, 2012.
    • [6] P. Tan and N.C. Beaulieu, “A comparison of DCT-based OFDM and DFT-based OFDM in frequency offset and fading channels,” IEEE Trans. Commun., vol. 54, pp. 2113-2125, 2006.
    • [7] Y. Yeh and S. Chen, “Efficient channel estimation based on discrete cosine transform,” Int. Conf. Acoust. Speech Signal Process, pp. 676-679, Hong Kong, 2003.
    • [8] S.L. Jansen, I. Morita, T.C.W. Schenk, N. Takeda, and H. Tanaka, “Coherent optical 25.8Gb/s OFDM transmission over 4160km SSMF,” IEEE Journal of Lightwave Technology, vol. 26, pp. 6-15, 2008.
    • [9] M. Nolle, L. Molle, D.D. Gross, and R. Freund, “Transmission of 5×62Gbit/s DWDM coherent OFDM with a spectral efficiency of 7.2bit/s/Hz using joint 64QAM and 16QAM modulation,” Proceedings of Optical Fiber Communication Conference (OFC), paper OMR4, San Diego, CA, 2010.
    • [10] G. Mandyam, “On the discrete cosine transform and OFDM systems,” Int. Conf. Acoust. Speech Signal Process, pp. 544-547, Hong Kong, 2003.
    • [11] E. Giacoumidis, S. K. Ibrahim, J. Zhao, J. M. Tang, A. D. Ellis, and I. Tomkos, “Experimental and Theoretical Investigations of Intensity-Modulation and Direct-Detection Optical Fast-OFDM over MMF-links,” IEEE Photon. Technol. Lett., vol. 24, pp. 52-54, 2012.
    • [12] N.A. Dhahir and H. Minn, “A new multicarrier transceiver based on the discrete cosine transform,” IEEE Wireless Communications and Networking Conference, pp. 45-50, New Orleans, LA, 2005.
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