2017
DOI: 10.1364/oe.25.027247
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Simplified extended Kalman filter phase noise estimation for CO-OFDM transmissions

Abstract: We propose a flexible simplified extended Kalman filter (S-EKF) scheme that can be applied in both pilot-aided and blind modes for phase noise compensation in 16-QAM CO-OFDM transmission systems employing a small-to-moderate number of subcarriers. The performance of the proposed algorithm is evaluated and compared with conventional pilot-aided (PA) and blind phase search (BPS) methods via extensive an Monte Carlo simulation in a back-to-back configuration and with a dual polarization fiber transmission. For 64… Show more

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Cited by 18 publications
(9 citation statements)
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References 19 publications
(53 reference statements)
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“…The phase noise introduced by inter-channel interference is not considered here. ICI can be approximated as an additive Gaussian noise [18], [19]. Due to the additive Gaussian noise characteristic of ICI, the OBE and EBE scheme that utilize DFT basis or eigenvector basis cannot approximate it.…”
Section: Technique Principlementioning
confidence: 99%
“…The phase noise introduced by inter-channel interference is not considered here. ICI can be approximated as an additive Gaussian noise [18], [19]. Due to the additive Gaussian noise characteristic of ICI, the OBE and EBE scheme that utilize DFT basis or eigenvector basis cannot approximate it.…”
Section: Technique Principlementioning
confidence: 99%
“…In the presence of laser phase noise and additive white Gaussian noise (AWGN), the received polarization multiplexed CO-OFDM signal-for an optical flat channel can be expressed in terms of the transmitted symbols [9] in the frequency domain as…”
Section: Phase Noise Model In Co-ofdmmentioning
confidence: 99%
“…In addition, DD-CPE algorithms inherit error propagation when the initialization is erroneous or when the laser linewidth is large (>100 KHz) [7]. In [9], the authors have proposed CPE based on simplified extended Kalman filtering but again use DD estimation in a blind mode.…”
Section: Introductionmentioning
confidence: 99%
“…While improving overall efficiency and system performance, it decreases system complexity [3]. Then, a shorter OFDM symbol duration (lower number of subcarriers) is preferable to increase the PN tolerance [4]. Orthogonal frequencydivision multiplexing (OFDM) is a sort of digital transmission that uses multiple carrier frequencies to encode digital data that are used in telecommunications.…”
Section: Introductionmentioning
confidence: 99%