Symbol synchronization exploiting the symmetric property in optical fast OFDM

Thumbnail Image
JZ_SymbolAV2011.pdf(404.71 KB)
Accepted Version
Zhao, Jian
Ibrahim, Selwan K.
Rafique, Danish
Gunning, Paul
Ellis, Andrew D.
Journal Title
Journal ISSN
Volume Title
Research Projects
Organizational Units
Journal Issue
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.
Detection , Modulation , Orthogonal frequency-division multiplexing (OFDM) , Wavelength-division multiplexing
Zhao, JA, Ibrahim, SK, Rafique, D, Gunning, P, Ellis, AD (2011) 'Symbol Synchronization Exploiting the Symmetric Property in Optical Fast OFDM'. IEEE Photonics Technology Letters, 23 (9):594-596. doi: 10.1109/LPT.2011.2118195
© 2011 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.