Open AccessImprovement of RF-Pilot Based Phase Noise Compensation in CO-OFDM Communication Systems
Author(s) -
Kidsanapong Puntsri
Publication year - 2015
Publication title -
ecti transactions on electrical eng. / electronics and communications
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.148
H-Index - 7
ISSN - 1685-9545
DOI - 10.37936/ecti-eec.2015132.171033
Subject(s) - quadrature amplitude modulation , phase noise , computer science , spline interpolation , electronic engineering , bit error rate , qam , orthogonal frequency division multiplexing , algorithm , control theory (sociology) , engineering , telecommunications , decoding methods , artificial intelligence , computer vision , bilinear interpolation , channel (broadcasting) , control (management)
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.