Fiber Nonlinearity Mitigation by Improved Zero-Interpolation Method in Coherent Optical OFDM Systems

被引：1

作者：

HAO YaohongLI YuquanWANG Rong Institute of Communications EngineeringPLA University of Science and TechnologyNanjing JiangsuChina ^{[210007
]}

机构：

来源：

WuhanUniversityJournalofNaturalSciences | 2011年 / 16卷 / 01期

关键词：

coherent optical communication; fiber nonlinearity; signal clipping; orthogonal frequency division multiplexing (OFDM);

D O I：

暂无

中图分类号：

TN929.11 [光纤通信];

学科分类号：

0803 ;

摘要：

An improved zero-interpolation method with signal clipping to improve fiber nonlinearity tolerance in the long-haul coherent optical orthogonal frequency division multiplexing system (CO-OFDM) is presented. The new technique is implemented by interpolating zero subcarriers and selecting the odd subcarriers to carry data and clipping conventional CO-OFDM signal at zero. With such a scheme,the effect of fiber nonlinearity can be miti-gated,and the wanted signal carried on odd subcarriers is or-thogonal to clipping noise,which falls on even frequencies. Simu-lation shows that the system Q value is improved by more than 2 dB at the length of 960 km

引用

页码：38 / 42

页数：5