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Title: Blind modulation format identification for digital coherent receivers
Authors: Bilal, SM
Bosco, G
Dong, Z
Lau, APT 
Lu, C 
Issue Date: 2015
Publisher: Optical Society of America
Source: Optics express, 2015, v. 23, no. 20, p. 26769-26778 How to cite?
Journal: Optics express 
Abstract: In this paper, a simple novel digital modulation format identification (MFI) scheme for coherent optical systems is proposed. The scheme is based on the evaluation of the peak-to-average-power ratio (PAPR) of the incoming data samples after analog-to-digital conversion (ADC), chromatic dispersion (CD) and polarization mode demultiplexing (PMD) compensation at the receiver (Rx). Since at a particular opticalsignal-to-noise ratio (OSNR) value different modulation formats have distinct PAPR values, it is possible to identify them. The proposed scheme and the results are analyzed both experimentally and through numerical simulations. The results demonstrate successful identification among four modulation formats (MF) commonly used in digital coherent systems.
EISSN: 1094-4087
DOI: 10.1364/OE.23.026769
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