Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/24697
Title: Decision-aided sampling frequency offset compensation for reduced-guard-interval coherent optical OFDM systems
Authors: Wang, W
Zhuge, Q
Morsy Osman, M
Gao, Y
Xu, X
Chagnon, M
Qiu, M
Hoang, MT
Zhang, F
Li, R
Plant, DV
Issue Date: 2014
Publisher: Optical Society of America
Source: Optics express, 2014, v. 22, no. 22, p. 27553-27564 How to cite?
Journal: Optics express 
Abstract: We propose a decision-aided algorithm to compensate the sampling frequency offset (SFO) between the transmitter and receiver for reduced-guard-interval (RGI) coherent optical (CO) OFDM systems. In this paper, we first derive the cyclic prefix (CP) requirement for preventing OFDM symbols from SFO induced inter-symbol interference (ISI). Then we propose a new decision-aided SFO compensation (DA-SFOC) algorithm, which shows a high SFO tolerance and reduces the CP requirement. The performance of DA-SFOC is numerically investigated for various situations. Finally, the proposed algorithm is verified in a single channel 28 Gbaud polarization division multiplexing (PDM) RGI COOFDM experiment with QPSK, 8 QAM and 16 QAM modulation formats, respectively. Both numerical and experimental results show that the proposed DA-SFOC method is highly robust against the standard SFO in optical fiber transmission.
URI: http://hdl.handle.net/10397/24697
EISSN: 1094-4087
DOI: 10.1364/OE.22.027553
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