title: Low overhead and nonlinear-tolerant adaptive zero-guard-interval CO-OFDM.
abstract: 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.
authors.forename: Wei
authors.initials: W
authors.lastname: Wang
authors.forename: Qunbi
authors.initials: Q
authors.lastname: Zhuge
authors.forename: Yuliang
authors.initials: Y
authors.lastname: Gao
authors.forename: Meng
authors.initials: M
authors.lastname: Qiu
authors.forename: Mohamed
authors.initials: M
authors.lastname: Morsy-Osman
authors.forename: Mathieu
authors.initials: M
authors.lastname: Chagnon
authors.forename: Xian
authors.initials: X
authors.lastname: Xu
authors.forename: David V
authors.initials: DV
authors.lastname: Plant