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Performance Evaluation of Phase Estimation Algorithms in Equalized Coherent Optical Systems

Pessoa, LM; Salgado, HM; Darwazeh, I; (2009) Performance Evaluation of Phase Estimation Algorithms in Equalized Coherent Optical Systems. IEEE PHOTONIC TECH L , 21 (17) 1181 - 1183. 10.1109/LPT.2009.2024003.

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Abstract

We assess the performance of a coherent optical system employing a phase estimation algorithm combined with a least mean square decision-directed equalizer in a feedback configuration and compare it to the constant modulus algorithm with an independent carrier phase estimation approach for 16-quadratic-amplitude-modulation transmission. Both series and parallel implementations are discussed. Hardware issues regarding a recursive implementation of the estimation filter are also reported.

Type:Article
Title:Performance Evaluation of Phase Estimation Algorithms in Equalized Coherent Optical Systems
DOI:10.1109/LPT.2009.2024003
Keywords:Coherent systems, feedforward phase estimation, Kalman filtering, parallel algorithms, Wiener filtering
UCL classification:UCL > School of BEAMS > Faculty of Engineering Science > Electronic and Electrical Engineering

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