南京信息工程大学学报2017，Vol.9Issue(2)：197-202,6.DOI:10.13878/j.cnki.jnuist.2017.02.012
一种基于改进频域最小均方算法的少模光纤模式复用系统均衡
A modified adaptive least mean square frequency domain algorithm for equalization of mode division multiplexed in few mode fiber transmission
摘要
Abstract
Mode division multiplexed ( MDM ) in few mode fibers has gained attraction due to its potential to achieve ultra-high capacity beyond the nonlinear Shannon limit of the single mode fiber.Meanwhile,polarization di-vision multiplexing (PDM) can make the system transmission capacity doubled without changing the fiber link.The combination of MDM and PDM can provide much more capacity up to several hundreds Gbit/s.However,it cannot be ignored that the effect of mode coupling and differential mode group delay on optical signals exists in transmis-sion and mitigating these impairments is required in this multiplexing. This paper focuses on the frequency domain least mean square (LMS) digital equalization for MDM with PDM in few mode fiber system.A modified frequency domain LMS algorithm is proposed,which is operated with a butterfly finite impulse response ( FIR) filter by means of modifying equations according to average power in each frequency bins.Simulation results show that the modified algorithm can improve the convergence speed and the system performance compared with traditional algorithm.关键词
模式复用/偏振复用/频域最小均方算法/有限冲激响应Key words
mode division multiplexed ( MDM)/polarization division multiplexing ( PDM)/frequency domain least mean square ( FDLMS)/finite impulse response ( FIR)分类
数理科学引用本文复制引用
张双熙,刘剑飞,卢嘉,曾祥烨,魏颖..一种基于改进频域最小均方算法的少模光纤模式复用系统均衡[J].南京信息工程大学学报,2017,9(2):197-202,6.基金项目
天津市自然科学基金(15JCYBJC17000) （15JCYBJC17000）
河北省自然科学青年基金( F2014202036,F2015202331) （ F2014202036,F2015202331）
