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Journal of Optical Communications and Networking

Journal of Optical Communications and Networking

  • Editors: K. Bergman and O. Gerstel
  • Vol. 6, Iss. 2 — Feb. 1, 2014
  • pp: 180–189

Analysis of Performance Assessment of Direct-Detection OFDM Optical Receivers With Imperfect RF Demodulation

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


Journal of Optical Communications and Networking, Vol. 6, Issue 2, pp. 180-189 (2014)
http://dx.doi.org/10.1364/JOCN.6.000180


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Abstract

An analytical method based on the moment generating function (MGF) is proposed for assessing the performance of direct-detection (DD) orthogonal frequency division multiplexing (OFDM) optical receivers with radio-frequency (RF) demodulation. The MGF-based method is a generalization of the method previously reported in the literature for DD baseband OFDM optical receivers. The proposed method relies on the analytical derivation of equivalent filters that describe the combined effect of electrical filtering + RF demodulation + FFT operation + the equalizer of the OFDM receiver for the real and imaginary parts of the signal at the equalizer output. The method takes into account imperfections of the RF demodulator, namely, power and phase imbalance between the RF demodulator arms and different electrical filtering on its arms. Numerical results show excellent agreement between the bit error probability estimates provided by the proposed method and estimates obtained from Monte Carlo simulation, in the absence and presence of receiver imperfections.

© 2014 Optical Society of America

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.4080) Fiber optics and optical communications : Modulation
(060.4510) Fiber optics and optical communications : Optical communications

ToC Category:
Research Papers

History
Original Manuscript: July 29, 2013
Revised Manuscript: December 8, 2013
Manuscript Accepted: December 12, 2013
Published: January 28, 2014

Citation
João L. Rebola and Adolfo V. T. Cartaxo, "Analysis of Performance Assessment of Direct-Detection OFDM Optical Receivers With Imperfect RF Demodulation," J. Opt. Commun. Netw. 6, 180-189 (2014)
http://www.opticsinfobase.org/jocn/abstract.cfm?URI=jocn-6-2-180

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