高速移动环境下OFDM系统仿真平台设计

摘要

为了更好地研究高速移动应用环境对OFDM系统性能的影响,设计了基于Matlab的高速移动环境下OFDM系统仿真平台.介绍了OFDM技术的基本原理和特点,构建了高速移动环境下OFDM系统的基本模型以及基于Matlab的OFDM仿真平台.通过选择合适的时变信道参数,仿真并分析了多普勒效应对OFDM通信系统性能的影响.该平台为下一步的研究工作提供基础仿真框架,具有很好的实用性.%In order to better study of the influence to the performance of OFDM system caused by the high-speed mobile environment,a simulation platform based on Matlab is designed for OFDM system in high-speed mobile environment. First the principle and characteristic of the OFDM technologies is introduced. Then the basic model of OFDM system in high-speed mobile environment, and the OFDM simulation platform based on Matlab is built. Finally, via choosing the appropriate time-varying channel parameters, the impact what Doppler effect bring to the OFDM system performance is simulated and analyzed. This simulation platform is very useful, because it provide a basic simulation frame for next research.