A novel modulation format identification based on amplitude histogram space  

作　　者：Tianliang WANG Xiaoying LIU 

机构地区：[1]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

出　　处：《Frontiers of Optoelectronics》2019年第2期190-196,共7页光电子前沿（英文版）

基　　金：the National Natural Science Foundation of China (Grant Nos. 61575071, and 61331010).

摘　　要：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 com-pensation at the receiver. We demonstrated the identifica-tion 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.

关 键 词：MODULATION FORMAT IDENTIFICATION (MFI) AMPLITUDE HISTOGRAM SPACE high-order MODULATION FORMAT optical performance monitoring 

分 类 号：TN[电子电信]