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A novel modulation format identification based on amplitude histogram space |
Tianliang WANG, Xiaoying LIU() |
National Engineering Laboratory for Next Generation Internet Access System, School of Optical and Electronic Information (SOEI), Huazhong University of Science and Technology, Wuhan 430074, China |
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Abstract In this paper, we proposed a novel modulation format identification method for square M-quadrature amplitude modulation (M-QAM) signals which is based on amplitude histogram space of the incoming data after analog-to-digital conversion, chromatic dispersion compensation at the receiver. We demonstrated the identification of quadrature phase-shift keying (QPSK), 16-QAM, 64-QAM formats with an amplitude histogram space. Simulation results show that it achieve 100% identification accuracy when the incoming signal OSNR is 14 dB to identify the modulation format of QPSK, 16-QAM, and 64-QAM signals in digital coherent systems. The method has low complexity and small delay.
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Keywords
modulation format identification (MFI)
amplitude histogram space
high-order modulation format
optical performance monitoring
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Corresponding Author(s):
Xiaoying LIU
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Just Accepted Date: 18 May 2018
Online First Date: 10 August 2018
Issue Date: 03 July 2019
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