Joint Compensation of Frequency Offset, Phase and Amplitude Noise Using Two Stage Extended Kalman Filtering
Konferenz: Photonische Netze - 18. ITG-Fachtagung
11.05.2017 - 12.05.2017 in Leipzig, Deutschland
Tagungsband: Photonische Netze
Seiten: 4Sprache: EnglischTyp: PDF
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Autoren:
Pakala, Lalitha; Schmauss, Bernhard (Institute of Microwaves and Photonics (LHFT) and Erlangen Graduate School in Advanced Optical Technologies (SAOT), University of Erlangen-Nuremberg, Cauerstrasse 9, 91058 Erlangen, Germany)
Inhalt:
We propose a two stage extended Kalman filtering (EKF) for the joint tracking of frequency offset (FO) and phase noise with simultaneous amplitude noise mitigation. In the first stage, an EKF has been employed for a coarse estimation of the frequency offset using a set of training data symbols. The EKF employed in the second stage will compensate for the residual FO along with phase and amplitude noise. The performance of the EKF has been compared to a two stage linear Kalman filtering (LKF) for polarization multiplexed (PM) 16-quadrature amplitude modulation (QAM) system operating at 28 Gbaud. Numerical results justify that our proposed two stage EKF approach outperforms the LKF with improved tolerance towards FO, phase and amplitude noise.