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Conferences > ECOC > 2011 > Tu.6.A > Tu.6.A.2

Soft Decision Metrics for Differentially Encoded QPSK

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

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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.

© 2011 Optical Society of America

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