Estimating OSNR of Equalised QPSK Signals

David J Ives; Benn C Thomsen; Robert Maher; Seb J Savory

doi:10.1364/ECOC.2011.Tu.6.A.6

37th European Conference and Exposition on Optical Communications
OSA Technical Digest (CD) (Optica Publishing Group, 2011),
paper Tu.6.A.6
•https://doi.org/10.1364/ECOC.2011.Tu.6.A.6

Estimating OSNR of Equalised QPSK Signals

David J Ives, Benn C Thomsen, Robert Maher, and Seb J Savory

European Conference and Exposition on Optical Communications 2011

Geneva Switzerland
18–22 September 2011
ISBN: 978-1-55752-931-2

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CODING & PERFORMANCE MONITORING (Tu.6.A)

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D. J. Ives, B. C. Thomsen, R. Maher, and S. J. Savory, "Estimating OSNR of Equalised QPSK Signals," in 37th European Conference and Exposition on Optical Communications, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper Tu.6.A.6.

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Abstract

We propose and demonstrate a technique to estimate the OSNR of an equalised QPSK signal. When combined with a single point calibration the OSNR of the input signal was estimated to within 0.5 dB.

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