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

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

doi:10.1364/OE.24.019969

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

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

The Hong Kong Polytechnic University

Research output: Journal article publication › Journal article › Academic research › peer-review

27 Citations (Scopus)

Abstract

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 language	English
Pages (from-to)	19969-19977
Number of pages	9
Journal	Optics Express
Volume	24
Issue number	17
DOIs	https://doi.org/10.1364/OE.24.019969
Publication status	Published - 22 Aug 2016

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics

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10.1364/OE.24.019969

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abstract = "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.",

author = "Xinwei Du and Jing Zhang and Yan Li and Changyuan Yu and Kam, {Pooi Yuen}",

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T1 - Efficient joint timing and frequency synchronization algorithm for coherent optical OFDM systems

AU - Du, Xinwei

AU - Zhang, Jing

AU - Li, Yan

AU - Yu, Changyuan

AU - Kam, Pooi Yuen

PY - 2016/8/22

Y1 - 2016/8/22

N2 - 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.

AB - 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.

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JO - Optics Express

JF - Optics Express

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

Abstract

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