Low overhead and nonlinear-tolerant adaptive zero-guard-interval CO-OFDM | Zendy

Wei Wang | Zendy; Qunbi Zhuge | Zendy; Yuliang Gao | Zendy; Meng Qiu | Zendy; Mohamed Morsy-Osman | Zendy; Mathieu Chag | Zendy; Xian Xu | Zendy; David V. Plant | Zendy

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Low overhead and nonlinear-tolerant adaptive zero-guard-interval CO-OFDM

Author(s) -

Wei Wang,

Qunbi Zhuge,

Yuliang Gao,

Meng Qiu,

Mohamed Morsy-Osman,

Mathieu Chag,

Xian Xu,

David V. Plant

Publication year - 2014

Publication title -

optics express

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.394

H-Index - 271

ISSN - 1094-4087

DOI - 10.1364/oe.22.017810

Subject(s) - guard interval , orthogonal frequency division multiplexing , polarization mode dispersion , polarization division multiplexing , optics , computer science , electronic engineering , wavelength division multiplexing , optical fiber , channel (broadcasting) , physics , telecommunications , wavelength , engineering

We propose an adaptive channel estimation (CE) method for zero-guard-interval (ZGI) coherent optical (CO)-OFDM systems, and demonstrate its performance in a single channel 28 Gbaud polarization-division multiplexed ZGI CO-OFDM experiment with only 1% OFDM processing overhead. We systematically investigate its robustness against various transmission impairments including residual chromatic dispersion, polarization-mode dispersion, state of polarization rotation, sampling frequency offset and fiber nonlinearity. Both experimental and numerical results show that the adaptive CE-aided ZGI CO-OFDM is highly robust against these transmission impairments in fiber optical transmission systems.

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