2018
DOI: 10.1109/jphot.2018.2868745
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Joint Time/Frequency Synchronization and Chromatic Dispersion Estimation With Low Complexity Based on a Superimposed FrFT Training Sequence

Abstract: We design a new kind of fractional Fourier transform superimposed training sequence (TS) to simultaneously estimate linear distortions including chromatic dispersion (CD), timing offset (TO), and frequency offset (FO), etc. Without sacrificing additional spectrum efficiency, the scheme can reduce the computational complexity sharply compared to a regular estimation method. The feasibility of the proposed scheme is verified by simulations of 28 GBaud dual polarization quadrature phase-shift keying (DP-QSPK) and… Show more

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Cited by 21 publications
(6 citation statements)
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“…It is noted that our MFI and FO method will be invalid if the head of the superimposed LFM signal can't be found. We take a time synchronization method based on FrFT detailed in [20], [21] to estimate the frame head location with negligible errors. In our scheme, the frame structure can be devised as Fig.…”
Section: Frame Head Location Searching Methodsmentioning
confidence: 99%
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“…It is noted that our MFI and FO method will be invalid if the head of the superimposed LFM signal can't be found. We take a time synchronization method based on FrFT detailed in [20], [21] to estimate the frame head location with negligible errors. In our scheme, the frame structure can be devised as Fig.…”
Section: Frame Head Location Searching Methodsmentioning
confidence: 99%
“…That means the deviation can be employed to estimate FO. The detail relationship between FO and peak deviation is expressed as [21]:…”
Section: Fo Estimation Enabled By Frftmentioning
confidence: 99%
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