Soft-Decision Turbo Decoding for Coherent Transmission with Phase Slips
Conference: Photonische Netze - 13. ITG-Fachtagung
05/07/2012 - 05/08/2012 at Leipzig, Germany
Proceedings: Photonische Netze
Pages: 5Language: englishTyp: PDF
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Authors:
Bisplinghoff, A.; Schmauss, B. (University Erlangen, Germany)
Langenbach, S. (Cisco Optical GmbH, Nuremberg, Germany)
Abstract:
We investigate the impact of frequent phase slips on turbo decoding of low density parity check codes combined with differentially encoded QPSK. Iterative joint soft differential demodulation and soft-decision decoding improves the signal to noise ratio performance of coherently demodulated QPSK, but compromises its phase slip resilience.