光通信研究Issue(3)：13-16,4.DOI:10.13756/j.gtxyj.2018.03.004
高速光纤通信系统中DBP算法的步长选择
Optimal Step Size for DBP in High Speed Optical Fiber Communication System
黄丽艳 1雷学义 2李燕 2李伟华 2吴珍 2朱京 2喻杰奎 1龙函 1冯其光3
作者信息
- 1. 武汉光迅科技股份有限公司,武汉 430205
- 2. 国家电网公司信息通信分公司,北京 100761
- 3. 华中科技大学 武汉光电国家实验室,武汉 430074
- 折叠
摘要
Abstract
This paper proposes a new step size distribution method in variable step size Digital Back Propagation (DBP)algo-rithm.Several oblique lines are used to estimate the effective nonlinear coefficient which exponentially increases with the dis-tance.Then a step size distribution is determined to ensure the difference of the slope between the oblique lines and the expo-nential curve is minimum.The optimal step size distribution is used in split-step Fourier method to compensate the nonlinear impairments.Simulation is implemented in a 3200 km Daul-Polarization Quadrature Phase Shift Keying (DPQPSK)system with single channel rate of 25 Gbaud using the proposed step size distribution method.Simulation results show that theQ-value based on the step size distribution method is increased about 0.5 dB when compared with uniform step size distribution meth-od.The proposed algorithm has larger tolerance on the nonlinear effects with low complexity.关键词
数字背向传输算法/斜线法步长选择/分步傅里叶变换法Key words
DBP algorithm/oblique lines method/split-step Fourier method分类
信息技术与安全科学引用本文复制引用
黄丽艳,雷学义,李燕,李伟华,吴珍,朱京,喻杰奎,龙函,冯其光..高速光纤通信系统中DBP算法的步长选择[J].光通信研究,2018,(3):13-16,4.
