Chinese Optics Letters, 2016, 14 (11): 110602, Published Online: Aug. 2, 2018
High order modulation format identification based on compressed sensing in optical fiber communication system Download: 972次
060.1660 Coherent communications 060.2330 Fiber optics communications 060.4510 Optical communications
Abstract
We propose a method of modulation format identification based on compressed sensing using a high-order cyclic cumulant combined with a binary tree classifier. Through computing the fourth-order cyclic cumulant of the pretreated band signal, which is obtained by compressed sensing with the sampling rate much less than the Nyquist sampling value, the feature vector for classification is extracted. Simulations are carried out in the optical coherent fiber communication system with different modulation formats of multiple phase-shift keying and multiple quadrature amplitude modulation. The results indicate that this method can identify these modulation formats correctly and efficiently. Meanwhile, the proposed method is insensitive to laser phase noise and signal noise.
Bingxiang Hui, Xianfeng Tang, Na Gao, Wenbo Zhang, Xiaoguang Zhang. High order modulation format identification based on compressed sensing in optical fiber communication system[J]. Chinese Optics Letters, 2016, 14(11): 110602.