Pakala L, Schmauß B (2014)
Publication Language: English
Publication Type: Conference contribution
Publication year: 2014
Publisher: Elsevier BV
Book Volume: 56
Pages Range: 1353-1357
DOI: 10.1016/j.phpro.2014.08.062
We numerically investigate the performance of Viterbi-Viterbi (VV) carrier phase estimation (CPE) and feed-forward decision directed (DD) CPE along with digital backward propagation (DBP) to mitigate laser phase noise, linear and nonlinear fiber impair- ments for polarization multiplexed (PM) 4 and 16-ary quadrature amplitude modulation (QAM) coherent systems. For 16-QAM, DD-CPE is compared with quadrature phase shift keying (QPSK) partitioning method that is based on the modification of VV-CPE. When the laser phase noise is negligible, both CPE methods exhibit a similar performance when employed after DBP. However, in the presence of phase noise, non-decision directed VV-CPE (for 4-QAM) and QPSK partitioning (for 16-QAM) methods outper- form DD-CPE with greater phase noise tolerance and reduced complexity.
APA:
Pakala, L., & Schmauß, B. (2014). Nonlinearity and Phase Noise Mitigation Using Feed-forward Carrier Phase Estimation and Digital Backward Propagation in Coherent QAM Transmission. In Proceedings of the Physics Procedia, Proceedings of the 8th International Conference on Laser Assisted Net Shape Engineering (LANE 2014) (pp. 1353-1357). Elsevier BV.
MLA:
Pakala, Lalitha, and Bernhard Schmauß. "Nonlinearity and Phase Noise Mitigation Using Feed-forward Carrier Phase Estimation and Digital Backward Propagation in Coherent QAM Transmission." Proceedings of the Physics Procedia, Proceedings of the 8th International Conference on Laser Assisted Net Shape Engineering (LANE 2014) Elsevier BV, 2014. 1353-1357.
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