Performance Evaluation of Phase Estimation Algorithms in Equalized Coherent Optical Systems

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-quadra...

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Bibliographic Details
Published inIEEE photonics technology letters Vol. 21; no. 17; pp. 1181 - 1183
Main Authors Pessoa, L.M., Salgado, H.M., Darwazeh, I.
Format Journal Article
LanguageEnglish
Published New York IEEE 01.09.2009
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
Algorithms
Carriers
Coherence
Coherent systems
Equalizers
feedforward phase estimation
Hardware
High speed optical techniques
Kalman filtering
Least mean squares
Mathematical model
Optical feedback
Optical filters
Optical signal processing
parallel algorithms
Performance evaluation
Phase estimation
Phase noise
Recursive
Signal processing algorithms
Wiener filter
Wiener filtering
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Summary: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.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:1041-1135
1941-0174
DOI:10.1109/LPT.2009.2024003