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Title: Application of Kalman filter in frequency offset estimation for coherent optical quadrature phase-shift keying communication system
Authors: Jiang, W
Yang, Y
Zhang, Q
Sun, Y
Zhong, K
Zhou, X
Yao, Y
Keywords: Frequency offset estimation
Kalman filter
Optical communications
Quantum phase-shift keying
Issue Date: 2016
Publisher: SPIE-International Society for Optical Engineering
Source: Optical engineering, 2016, v. 55, no. 9, 096102 How to cite?
Journal: Optical engineering 
Abstract: The frequency offset estimation (FOE) schemes based on Kalman filter are proposed and investigated in detail via numerical simulation and experiment. The schemes consist of a modulation phase removing stage and Kalman filter estimation stage. In the second stage, the Kalman filters are employed for tracking either differential angles or differential data between two successive symbols. Several implementations of the proposed FOE scheme are compared by employing different modulation removing methods and two Kalman algorithms. The optimal FOE implementation is suggested for different operating conditions including optical signal-to-noise ratio and the number of the available data symbols.
ISSN: 0091-3286
EISSN: 1560-2303
DOI: 10.1117/1.OE.55.9.096102
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