TY - JOUR
T1 - A Modulation Format Identification Method Based on Amplitude Deviation Analysis of Received Optical Communication Signal
AU - Zhao, Zhao
AU - Yang, Aiying
AU - Guo, Peng
AU - Tang, Wenyu
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/2
Y1 - 2019/2
N2 - Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal. In our method, for a received optical signal, two values of normalized average amplitude deviation with reference to amplitude of ideal polarization-division multiplexing (PDM) QPSK and 16 quadratic-amplitude modulation (QAM) are computed, respectively, and the ratio of the two values is used to identify the commonly used formats like PDM-QPSK, PDM-8 QAM, PDM-16 QAM, PDM-32 QAM, and PDM-64 QAM. The results demonstrate that the modulation format can be identified with the required optical signal-to-noise ratio not higher than the forward error correction (FEC) threshold. The advantage of our method is that it is not sensitive to phase noise, frequency offset, and nonlinearity in optical fiber communication systems. The proposed method needs no training samples or additional hardware, so it is simple and cost-effective. Meanwhile, we also discuss the influence of the residual chromatic dispersion on our proposed scheme.
AB - Modulation format identification (MFI) is necessary for future elastic optical networks. We propose an MFI scheme based on the amplitude deviation analysis of the received optical communication signal. In our method, for a received optical signal, two values of normalized average amplitude deviation with reference to amplitude of ideal polarization-division multiplexing (PDM) QPSK and 16 quadratic-amplitude modulation (QAM) are computed, respectively, and the ratio of the two values is used to identify the commonly used formats like PDM-QPSK, PDM-8 QAM, PDM-16 QAM, PDM-32 QAM, and PDM-64 QAM. The results demonstrate that the modulation format can be identified with the required optical signal-to-noise ratio not higher than the forward error correction (FEC) threshold. The advantage of our method is that it is not sensitive to phase noise, frequency offset, and nonlinearity in optical fiber communication systems. The proposed method needs no training samples or additional hardware, so it is simple and cost-effective. Meanwhile, we also discuss the influence of the residual chromatic dispersion on our proposed scheme.
KW - MFI
KW - coherent optical communications
UR - http://www.scopus.com/inward/record.url?scp=85062184632&partnerID=8YFLogxK
U2 - 10.1109/JPHOT.2019.2893658
DO - 10.1109/JPHOT.2019.2893658
M3 - Article
AN - SCOPUS:85062184632
SN - 1943-0655
VL - 11
JO - IEEE Photonics Journal
JF - IEEE Photonics Journal
IS - 1
M1 - 8616790
ER -