An SVM-Based Detection for Coherent Optical APSK Systems With Nonlinear Phase Noise

作者：Han, Yi; Yu, Song^*; Li, Minliang; Yang, Jie; Gu, Wanyi

来源：IEEE Photonics Journal, 2014, 6(5): 7100510.

DOI：10.1109/JPHOT.2014.2357424

• Support vector machine (SVM)
• amplitude phase-shift keying (APSK)
• non-linear phase noise (NLPN)

A support vector machine (SVM)-based data detection is proposed for coherent optical fiber amplitude phase-shift keying (APSK) communication systems where the nonlinear phase noise is the main system impairment. The performances of the detection with SVMs are investigated for three different 16-APSK modulation formats. In addition, three transmission scenarios with dispersion being considered or not are adopted to simulate and analyze the performances. Compared with the traditional two-stage maximum-likelihood detection, the SVM conducts detection without the need to know the information of transmission link, and it gains a relatively large improvement in the nonlinear system tolerance, particularly in the high nonlinear regime. Compared with quadrature amplitude modulation (QAM), the 16-APSK system can increase the nonlinear system tolerance by 4.88 dB at BER = 1E - 3.

• 出版日期2014-10
• 单位信息光子学与光通信国家重点实验室; 北京邮电大学