Correlation-Based Carrier Phase Estimation for WDM DP-QPSK Transmission

A novel algorithm for frequency offset compensation and carrier phase estimation in systems with 40 or 111 Gb/s coherent dual-polarization quadrature phase-shift keying (DP-QPSK) with on-off keying or DP-QPSK neighbors is demonstrated. The algorithm, which applies correlation phase adjustment embedd...

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Bibliographic Details
Published in:IEEE photonics technology letters 2008-12, Vol.20 (24), p.2090-2092
Main Authors: Piyawanno, K., Kuschnerov, M., Hauske, F.N., Spinnler, B., Schmidt, E.-D., Lankl, B.
Format: Article
Language:English
Subjects:
Algorithms
Carrier phase estimation
Carriers
Coherence
coherent detection
Correlation
cross-phase modulation (XPM)
Demodulation
Digital
Error correction
Frequency estimation
frequency offset compensation
National electric code
optical fiber communication
Phase detection
Phase estimation
Phase shift keying
Polarization
Quadratures
Signal processing algorithms
Wavelength division multiplexing
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Description
Summary:A novel algorithm for frequency offset compensation and carrier phase estimation in systems with 40 or 111 Gb/s coherent dual-polarization quadrature phase-shift keying (DP-QPSK) with on-off keying or DP-QPSK neighbors is demonstrated. The algorithm, which applies correlation phase adjustment embedded between digital differential demodulation and nonredundant error correction, leads to a significant performance improvement over standard algorithms.
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2008.2006761