Efficient joint timing and frequency synchronization algorithm for coherent optical OFDM systems

Xinwei Du, Jing Zhang, Yan Li, Changyuan Yu, Pooi Yuen Kam

Research output: Journal article publicationJournal articleAcademic researchpeer-review

19 Citations (Scopus)


A joint timing and frequency synchronization algorithm is proposed for coherent optical orthogonal frequency-division multiplexing (CO-OFDM) systems. The timing and frequency synchronization is realized by using only one training symbol which is composed of conjugated symmetric sequence. The timing estimation of the proposed algorithm has the advantage of being robust to poor optical signal-to-noise ratio (OSNR) and chromatic dispersion (CD), and the frequency estimation range of fractional subcarrier spacing can be achieved. The feasibility and effectiveness of the proposed joint synchronization algorithm is verified in both simulations and a 47.3 Gbit/s 16-ary quadrature amplitude modulation (16-QAM) CO-OFDM system.
Original languageEnglish
Pages (from-to)19969-19977
Number of pages9
JournalOptics Express
Issue number17
Publication statusPublished - 22 Aug 2016

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics

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