Blind Modulation Format Identification Using Differential Phase and Amplitude Ratio

被引：14

作者：

Tan, Qingzhao ^{[1
]}

Yang, Aiying ^{[1
]}

Guo, Peng ^{[1
]}

机构：

[1] Beijing Inst Technol, Sch Opt & Photon, Minist Ind & Informat Technol, Key Lab Photon Informat Technol, Beijing 100086, Peoples R China

来源：

IEEE PHOTONICS JOURNAL | 2019年 / 11卷 / 01期

基金：

中国国家自然科学基金;

关键词：

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

D O I：

10.1109/JPHOT.2019.2896147

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

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.

引用

页数：12