SER estimation method for 56 GBaud PAM-4 transmission system

作     者：Aadil Raza Kangping Zhong Salman Ghafoor Saeed Iqbal Muhammad Adeel Shahid Habib Muhammad Fasih Uddin Butt Chao Lu 

作者机构：COMSATS Institute of Information Technology (CIIT) Islamabad Pakistan Department of Electronic and Information Engineering The Hong Kong Polytechnic University Hong Kong China National University of Sciences and Technology (NUST) Islamabad Pakistan 

出 版 物：《Chinese Optics Letters》 (中国光学快报（英文版）)

年 卷 期：2018年第16卷第4期

页      面：30-34页

核心收录：

学科分类：0808[工学-电气工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0803[工学-光学工程] 0702[理学-物理学] 

主　　题：PAM SER estimation method for 56 GBaud PAM-4 transmission system 

摘      要：In this Letter, we have proposed a generalized Gaussian probability density function（GGPDF）-based method to estimate the symbol error ratio（SER） for pulse amplitude modulation（PAM-4） in an intensity modulation/direct detection（IM/DD） system. Furthermore, a closed form expression of SERGGDfor PAM-4 has been derived. The performance of the proposed method is evaluated through simulation as well as experimental *** fitting of probability density functions of the received signal is applied via GGPDF and shape parameters P1 and P2 associated with different PAM-4 levels are determined. The optimum single value of shape parameter P is then calculated to estimate the SER. The mathematical relationship of P with different received optical powers and receiver bandwidths has been determined and verified. The proposed method is a fast and accurate method to estimate SER of a PAM-4 system, which is more reliable and in agreement with the error counting method.