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Journal of the Optical Society of Korea

Journal of the Optical Society of Korea

| PUBLISHED BY THE OPTICAL SOCIETY OF KOREA

  • Vol. 15, Iss. 3 — Sep. 1, 2011
  • pp: 232–236

Performance Analysis of Electrical MMSE Linear Equalizers in Optically Amplified OOK Systems

Jang-Woo Park and Won-Zoo Chung  »View Author Affiliations


Journal of the Optical Society of Korea, Vol. 15, Issue 3, pp. 232-236 (2011)


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Abstract

We analyze the linear equalizers used in optically amplified on-off-keyed (OOK) systems to combat chromatic dispersion (CD) and polarization mode dispersion (PMD), and we derive the mathematical minimum mean squared error (MMSE) performance of these equalizers. Currently, the MMSE linear equalizer for optical OOK systems is obtained by simulations using adaptive approaches such as least mean squared (LMS) or constant modulus algorithm (CMA), but no theoretical studies on the optimal solutions for these equalizers have been performed. We model the optical OOK systems as square-law nonlinear channels and compute the MMSE equalizer coefficients directly from the estimated optical channel, signal power, and optical noise variance. The accuracy of the calculated MMSE equalizer coefficients and MMSE performance has been verified by simulations using adaptive algorithms.

© 2011 Optical Society of Korea

OCIS Codes
(060.0060) Fiber optics and optical communications : Fiber optics and optical communications
(060.2330) Fiber optics and optical communications : Fiber optics communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.4510) Fiber optics and optical communications : Optical communications

History
Original Manuscript: July 21, 2011
Revised Manuscript: August 2, 2011
Manuscript Accepted: August 2, 2011
Published: September 25, 2011

Citation
Jang-Woo Park and Won-Zoo Chung, "Performance Analysis of Electrical MMSE Linear Equalizers in Optically Amplified OOK Systems," J. Opt. Soc. Korea 15, 232-236 (2011)
http://www.opticsinfobase.org/josk/abstract.cfm?URI=josk-15-3-232


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References

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