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Optics Express

Optics Express

  • Editor: C. Martijn de Sterke
  • Vol. 20, Iss. 3 — Jan. 30, 2012
  • pp: 1981–2003

Carrier phase estimation for optically coherent QPSK based on Wiener-optimal and adaptive Multi-Symbol Delay Detection (MSDD)

Netta Sigron, Igor Tselniker, and Moshe Nazarathy  »View Author Affiliations


Optics Express, Vol. 20, Issue 3, pp. 1981-2003 (2012)
http://dx.doi.org/10.1364/OE.20.001981


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Abstract

The MSDD carrier phase estimation technique is derived here for optically coherent QPSK transmission, introducing the principle of operation while providing intuitive insight in terms of a multi-symbol extension of naïve delay-detection. We derive here for the first time Wiener-optimized and LMS-adapted versions of MSDD, introduce simplified hardware realizations, and evaluate complexity and numerical performance tradeoffs of this highly robust and low-complexity carrier phase recovery method. A multiplier-free carrier phase recovery version of the MSDD provides nearly optimal performance for linewidths up to ~0.5 MHz, whereas for wider linewidths, the Wiener or LMS versions provide optimal performance at about 9 taps, using 1 or 2 complex multipliers per tap.

© 2012 OSA

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2360) Fiber optics and optical communications : Fiber optics links and subsystems
(060.2920) Fiber optics and optical communications : Homodyning

ToC Category:
Fiber Optics and Optical Communications

History
Original Manuscript: November 14, 2011
Revised Manuscript: December 14, 2011
Manuscript Accepted: December 14, 2011
Published: January 13, 2012

Citation
Netta Sigron, Igor Tselniker, and Moshe Nazarathy, "Carrier phase estimation for optically coherent QPSK based on Wiener-optimal and adaptive Multi-Symbol Delay Detection (MSDD)," Opt. Express 20, 1981-2003 (2012)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-20-3-1981


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