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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 4, Iss. 3 — Mar. 1, 2012
  • pp: 229–237

Bit Error Probability Evaluation in Optically Preamplified Direct-Detection OFDM Systems Using the Moment Generating Function

João L. Rebola and Adolfo V. T. Cartaxo  »View Author Affiliations


Journal of Optical Communications and Networking, Vol. 4, Issue 3, pp. 229-237 (2012)
http://dx.doi.org/10.1364/JOCN.4.000229


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Abstract

A novel method that allows the evaluation of the performance of an optically preamplified direct-detection baseband orthogonal frequency division multiplexing (OFDM) system with arbitrary optical and electrical filtering at the optical receiver is proposed. The method is based on the moment generating function of the symbol detected in each OFDM subcarrier after equalization and relies on the assumption that the noise samples at the fast Fourier transform (FFT) block input at the receiver side are practically uncorrelated. It is shown that, for typical filter bandwidths used in direct-detection optical OFDM systems (similar to or exceeding the OFDM signal bandwidth), the proposed method provides reasonably accurate estimates of the bit error probability for different electrical and optical filter types with various bandwidths, and for different numbers of OFDM subcarriers. For filter bandwidths smaller than the OFDM signal bandwidth, the proposed method becomes inaccurate due to the high correlation between the noise samples at the FFT block input.

© 2012 OSA

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Research Papers

History
Original Manuscript: July 14, 2011
Revised Manuscript: December 8, 2011
Manuscript Accepted: January 26, 2012
Published: February 22, 2012

Citation
João L. Rebola and Adolfo V. T. Cartaxo, "Bit Error Probability Evaluation in Optically Preamplified Direct-Detection OFDM Systems Using the Moment Generating Function," J. Opt. Commun. Netw. 4, 229-237 (2012)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-4-3-229


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