Symbol synchronization exploiting the symmetric property in optical fast OFDM


We propose a new simple method to achieve precise symbol synchronization using one start-of-frame (SOF) symbol in optical fast orthogonal frequency-division multiplexing (FOFDM) with subchannel spacing equal to half of the symbol rate per sub-carrier. The proposed method first identifies the SOF symbol, then exploits the evenly symmetric property of the discrete cosine transform in FOFDM, which is also valid in the presence of chromatic dispersion, to achieve precise symbol synchronization. We demonstrate its use in a 16.88-Gb/s phase-shifted-keying-based FOFDM system over a 124-km field-installed single-mode fiber link and show that this technique operates well in automatic precise symbol synchronization at an optical signal-to-noise ratio as low as 3 dB and after transmission.

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Uncontrolled Keywords: detection,modulation,orthogonal frequency- division multiplexing,wavelength-division multiplexing,Electrical and Electronic Engineering,Atomic and Molecular Physics, and Optics,Electronic, Optical and Magnetic Materials
Publication ISSN: 1941-0174
Last Modified: 30 May 2024 07:09
Date Deposited: 09 Jan 2013 09:33
Full Text Link: http://ieeexplo ... rnumber=5719155
Related URLs: http://www.scop ... tnerID=8YFLogxK (Scopus URL)
PURE Output Type: Article
Published Date: 2011-05-01
Authors: Zhao, Jian A.
Ibrahim, Selwan K.
Rafique, Danish
Gunning, Paul
Ellis, Andrew D. (ORCID Profile 0000-0002-0417-0547)



Version: Accepted Version

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