Extended Kalman filtering for joint mitigation of phase and amplitude noise in coherent QAM systems

Pakala L, Schmauß B (2016)

Publication Language: English

Publication Type: Journal article

Publication year: 2016

Journal

Optics Express Optical Society of America

Publisher: Optical Society of America

Book Volume: 24

Pages Range: 6391

Journal Issue: 6

DOI: 10.1364/oe.24.006391

Abstract

We numerically investigate our proposed carrier phase and amplitude noise estimation (CPANE) algorithm using extend Kalman filter (EKF) for joint mitigation of linear and non-linear phase noise as well as amplitude noise on 4, 16 and 64 polarization multiplexed (PM) quadrature amplitude modulation (QAM) 224 Gb/s systems. The results are compared to decision directed (DD) carrier phase estimation (CPE), DD phase locked loop (PLL) and universal CPE (U-CPE) algorithms. Besides eliminating the necessity of phase unwrapping function, EKF-CPANE shows improved performance for both back-to-back (BTB) and transmission scenarios compared to the aforementioned algorithms. We further propose a weighted innovation approach (WIA) of the EKF-CPANE which gives an improvement of 0.3 dB in the Q-factor, compared to the original algorithm.

© 2016 Optical Society of America

Authors with CRIS profile

Lalitha Pakala Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik Bernhard Schmauß Professur für Hochfrequenztechnik mit dem Schwerpunkt Optische Hochfrequenztechnik und Photonik

How to cite

APA:

Pakala, L., & Schmauß, B. (2016). Extended Kalman filtering for joint mitigation of phase and amplitude noise in coherent QAM systems. Optics Express, 24(6), 6391. https://dx.doi.org/10.1364/oe.24.006391

MLA:

Pakala, Lalitha, and Bernhard Schmauß. "Extended Kalman filtering for joint mitigation of phase and amplitude noise in coherent QAM systems." Optics Express 24.6 (2016): 6391.

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