Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/74626
Title: Joint polarization tracking and channel equalization based on radius-directed linear Kalman filter
Authors: Zhang, Q
Yang, Y
Zhong, K 
Liu, J
Wu, X
Yao, Y
Issue Date: 2018
Source: Optics communications, 2018, v. 407, p. 142-147
Abstract: We propose a joint polarization tracking and channel equalization scheme based on radius-directed linear Kalman filter (RD-LKF) by introducing the butterfly finite-impulse-response (FIR) filter in our previously proposed RD-LKF method. Along with the fast polarization tracking, it can also simultaneously compensate the inter-symbol interference (ISI) effects including residual chromatic dispersion and polarization mode dispersion. Compared with the conventional radius-directed equalizer (RDE) algorithm, it is demonstrated experimentally that three times faster convergence speed, one order of magnitude better tracking capability, and better BER performance is obtained in polarization division multiplexing 16 quadrature amplitude modulation system. Besides, the influences of the algorithm parameters on the convergence and the tracking performance are investigated by numerical simulation.
Keywords: Channel equalization
Kalman filter
Polarization tracking
Publisher: Elsevier
Journal: Optics communications 
ISSN: 0030-4018
EISSN: 1873-0310
DOI: 10.1016/j.optcom.2017.08.036
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