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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 8 — Apr. 9, 2012
  • pp: 9302–9311

Performance analysis of coherent optical 8-star QAM systems using decision-aided maximum likelihood phase estimation

Hongyu Zhang, Pooi-Yuen Kam, and Changyuan Yu  »View Author Affiliations

Optics Express, Vol. 20, Issue 8, pp. 9302-9311 (2012)

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An approximate bit-error rate (BER) expression of 8-star quadrature amplitude modulation (QAM) in the presence of a phase estimation error is derived. The accuracy of the approximate BER is verified via numerical integration of the conditional BER and the Monte-Carlo (MC) simulations. This approximation allows quick estimation of the BER performance and prediction of laser linewidth tolerance, and also facilitates optimization of the ring ratio.

© 2012 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.4080) Fiber optics and optical communications : Modulation

ToC Category:
Fiber Optics and Optical Communications

Original Manuscript: February 15, 2012
Revised Manuscript: April 2, 2012
Manuscript Accepted: April 2, 2012
Published: April 6, 2012

Hongyu Zhang, Pooi-Yuen Kam, and Changyuan Yu, "Performance analysis of coherent optical 8-star QAM systems using decision-aided maximum likelihood phase estimation," Opt. Express 20, 9302-9311 (2012)

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