Soft Decision Metrics for Differentially Encoded QPSK

A. Bisplinghoff; C. Cabirol; S. Langenbach; W. Sauer-Greff; B. Schmauss

doi:10.1364/ECOC.2011.Tu.6.A.2

37th European Conference and Exposition on Optical Communications
OSA Technical Digest (CD) (Optica Publishing Group, 2011),
paper Tu.6.A.2
•https://doi.org/10.1364/ECOC.2011.Tu.6.A.2

Soft Decision Metrics for Differentially Encoded QPSK

A. Bisplinghoff, C. Cabirol, S. Langenbach, W. Sauer-Greff, and B. Schmauss

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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A. Bisplinghoff, C. Cabirol, S. Langenbach, W. Sauer-Greff, and B. Schmauss, "Soft Decision Metrics for Differentially Encoded QPSK," in 37th European Conference and Exposition on Optical Communications, OSA Technical Digest (CD) (Optica Publishing Group, 2011), paper Tu.6.A.2.

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Abstract

We investigate phase slip aware soft decision metrics for coherently demodulated differentially encoded QPSK. A low-complexity approximation of a suitable metric has negligible penalty with practical soft decoders and is robust against residual phase noise.

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