基于MB-OFDM UWB信号的MMF系统性能分析与仿真

Performance analysis and simulation of multimode fiber system based on MB-OFDM UWB singnal

针对多模光纤(MMF)通信系统中的模式色散和非线性问题,将MB-OFDM UWB技术融合到多模光纤系统中,从理论上对MB-OFDM UWB技术克服多模光纤模式色散机理进行了分析,证明了该技术具有较好的克服多模光纤模式色散的能力,研究了MB-OFDM UWB信号的峰值平均功率比(PAPR)及PAPR减小方法。应用Optisystem与MATLAB软件搭建了实验仿真平台,验证了应用MB-OFDM UWB技术的多模光纤通信系统有很强的克服模式色散的能力,证明了应用PAPR减小方法对系统非线性的改善作用。

Considering model dispersion and nonlinear in multimode fiber(MMF),MB-OFDM UWB technology was fused into MMF communication system.Through the analysis of a distinguishing feature of MB-OFDM UWB signal and model dispersion in MMF,it was proved that MB-OFDM UWB technology had the ability to overcome multimode fiber mode dispersion.Peak average power ratio(PAPR) of MB-OFDM UWB signal and the PAPR reduction method were researched.The simulation platform was established by MATLAB and Optisystem software,verifying the ability to overcome modal dispersion in MB-OFDM UWB MMF communication system and the improvement in system performance by the PAPR reduction method.