Data-Aided OSNR Estimation for QPSK and 16-QAM Coherent Optical System

C. Do; A. V. Tran; C. Zhu; D. Hewitt; E. Skafidas

doi:10.1109/jphot.2013.2280536

IEEE Photonics Journal (Jan 2013)

Data-Aided OSNR Estimation for QPSK and 16-QAM Coherent Optical System

C. Do,
A. V. Tran,
C. Zhu,
D. Hewitt,
E. Skafidas

Affiliations

C. Do: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula>Victoria Research Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Australia
A. V. Tran: <formula formulatype="inline"><tex Notation="TeX">$^{2}$</tex></formula> Centre for Technology Infusion, La Trobe University, Melbourne, Australia
C. Zhu: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula> Victoria Research Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Australia
D. Hewitt: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula> Victoria Research Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Australia
E. Skafidas: <formula formulatype="inline"><tex Notation="TeX">$^{1}$</tex></formula> Victoria Research Laboratory, Department of Electrical and Electronic Engineering, University of Melbourne, Parkville, Australia

DOI: https://doi.org/10.1109/jphot.2013.2280536
Journal volume & issue: Vol. 5, no. 5
pp. 6601609 – 6601609

Abstract

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We propose an optical signal-to-noise ratio (OSNR) estimation technique using self-equalized complementary Golay sequences for both QPSK and 16-QAM coherent optical systems. The training sequences have complementary spectra, which enable accurate channel estimation and equalization, and have length-independent constellation for high-performance estimation. Estimation performances are verified through 100- and 40-Gb/s QPSK and 200- and 80-Gb/s 16-QAM coherent polarization-multiplexed optical systems, with an accuracy of 0.4 and 0.7 dB, in both simulations and experiments, respectively.

Published in IEEE Photonics Journal

ISSN: 1943-0655 (Online)
Publisher: IEEE
Country of publisher: United States
LCC subjects: Technology: Engineering (General). Civil engineering (General): Applied optics. Photonics; Science: Physics: Optics. Light
Website: http://ieeexplore.ieee.org/xpl/RecentIssue.jsp?punumber=4563994

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