Title :
Correlation-Based Carrier Phase Estimation for WDM DP-QPSK Transmission
Author :
Piyawanno, Kittipong ; Kuschnerov, Maxim ; Hauske, Fabian N. ; Spinnler, Bernhard ; Schmidt, Ernst-Dieter ; Lankl, Berthold
Author_Institution :
Inst. for Inf. & Commun. Technol., Univ. of the Fed. Armed Forces, Neubiberg
Abstract :
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.
Keywords :
demodulation; differential phase shift keying; error correction; optical fibre communication; phase estimation; quadrature phase shift keying; wavelength division multiplexing; WDM DP-QPSK transmission; byte rate 111 GByte/s; byte rate 40 GByte/s; correlation-based carrier phase estimation; digital differential demodulation; dual-polarization quadrature phase-shift keying; frequency offset compensation; nonredundant error correction; Carrier phase estimation; coherent detection; cross-phase modulation (XPM); frequency offset compensation; optical fiber communication;
Journal_Title :
Photonics Technology Letters, IEEE
DOI :
10.1109/LPT.2008.2006761
