Blind Modulation Format Identification Using Differential Phase and Amplitude Ratio

IEEE Photonics Journal

Aiying Yang¹  Peng Guo¹  Qingzhao Tan¹ 

[1] Key Laboratory of Photonics Information Technology, Ministry of Industry and Information Technology, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China;

关键词: Modulation format identification;    differential phase distribution ratio;    amplitude ratio;    coherent optical communications;   

DOI  :  10.1109/JPHOT.2019.2896147

来源: DOAJ

【 摘 要 】

We propose a blind digital modulation format identification (MFI) method for coherent optical fiber communication systems. Based on the evaluation of differential phase distribution ratio (DPDR) and average of amplitude ratio (AAR), a monitoring factor R, the product of DPDR and AAR, is defined to distinguish whether the signal modulation format is QPSK, 16-QAM, or 64-QAM. Simulation and experimental results demonstrate that the proposed MFI can perform an identification when the OSNR of the incoming signal is greater than 12 dB. The proposed method needs no extensive training data sets and can tolerate residual chromatic dispersion (-210-210 ps/nm) and phase noise.

【 授权许可】

Unknown