Lasers, Fiber Optics, and Communications

Application of Kalman filter in frequency offset estimation for coherent optical quadrature phase-shift keying communication system

[+] Author Affiliations
Wen Jiang, Yanfu Yang, Qun Zhang, Yunxu Sun, Yong Yao

Harbin Institute of Technology, Shenzhen Graduate School, Department of Electronic and Information Engineering, Shenzhen, Guangdong, China

Kangping Zhong, Xian Zhou

The Hong Kong Polytechnic University, Photonics Research Center, Department of Electrical Engineering, Hung Hom, Kowloon, Hong Kong, China

Opt. Eng. 55(9), 096102 (Sep 02, 2016). doi:10.1117/1.OE.55.9.096102
History: Received May 10, 2016; Accepted August 11, 2016
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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.

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© 2016 Society of Photo-Optical Instrumentation Engineers

Citation

Wen Jiang ; Yanfu Yang ; Qun Zhang ; Yunxu Sun ; Kangping Zhong, et al.
"Application of Kalman filter in frequency offset estimation for coherent optical quadrature phase-shift keying communication system", Opt. Eng. 55(9), 096102 (Sep 02, 2016). ; http://dx.doi.org/10.1117/1.OE.55.9.096102


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