Improvement of RF-Pilot Based Phase Noise Compensation in CO-OFDM Communication Systems

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Published: Apr 3, 2015
DOI: https://doi.org/10.37936/ecti-eec.2015132.171033
Keywords:
Coherent optical communications OFDM Phase noise Chromatic dispersion

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Kidsanapong Puntsri
Department of Electronics and Telecommunication Engineering, Faculty of Engineering Rajamangala University of Technology Isan

Abstract

This paper presents an improvement of random phase noise (RPN) compensation under chromatic dispersion (CD) by a modified two stages RF-pilot-based. The first stage is similar to the conventional RF-pilot-based method and the second stage is called the fine RPN compensation. The second stage is used for minimizing the random rotation phasor by employing a RF-pilot window. The performance of RPN mitigation is evaluated by a numerical simulation method. At the forward error correction (FEC) limit, a sum laser linewidth tolerance of ~3.1 MHz can be achieved for the 256-quadrature amplitude modulation (QAM) and ~10 MHz for 64-QAM. For CD mitigation, the linear and cubic spline interpolation methods are investigated. The simulation results show that the cubic spline interpolation method provides a significant bit error rate performance improvement.

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How to Cite
Puntsri, K. (2015). Improvement of RF-Pilot Based Phase Noise Compensation in CO-OFDM Communication Systems. ECTI Transactions on Electrical Engineering, Electronics, and Communications, 13(2), 58–64. https://doi.org/10.37936/ecti-eec.2015132.171033
Issue
Vol. 13 No. 2 (2015): Regular Issue
Section
Communication Systems

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