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Optics Express

Optics Express

  • Editor: Andrew M. Weiner
  • Vol. 22, Iss. 6 — Mar. 24, 2014
  • pp: 6749–6763

Performance analysis of blind timing phase estimators for digital coherent receivers

Lingchen Huang, Dawei Wang, Alan Pak Tao Lau, Chao Lu, and Sailing He  »View Author Affiliations


Optics Express, Vol. 22, Issue 6, pp. 6749-6763 (2014)
http://dx.doi.org/10.1364/OE.22.006749


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Abstract

The performances of various blind timing phase estimators (TPE) for digital coherent receiver are analyzed. The equivalence among four TPE algorithms is analytically presented, showing that two TPE algorithms applying squaring pre-filters are in fact identical. Three TPE algorithms applicable to Nyquist signals are proposed based on the equivalence analysis. In addition, the impact of receiver bandwidths, spectrum weighting bandwidths and signal timing phases on TPE performance are investigated. The definition of sampling diversity and the analysis of sampling diversity gain for four pulse shapes are presented. The effect of sampling diversity is observed and verified via both simulations and experiments.

© 2014 Optical Society of America

OCIS Codes
(060.1660) Fiber optics and optical communications : Coherent communications
(060.2330) Fiber optics and optical communications : Fiber optics communications

ToC Category:
Optical Communications

History
Original Manuscript: January 31, 2014
Revised Manuscript: March 5, 2014
Manuscript Accepted: March 6, 2014
Published: March 14, 2014

Citation
Lingchen Huang, Dawei Wang, Alan Pak Tao Lau, Chao Lu, and Sailing He, "Performance analysis of blind timing phase estimators for digital coherent receivers," Opt. Express 22, 6749-6763 (2014)
http://www.opticsinfobase.org/oe/abstract.cfm?URI=oe-22-6-6749


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