毕业论文设计基于simulink的仿真.doc

河北北方学院毕业论文题目: 数字调制系统的 SIMULINK 实现研究三种基本调制制度的功率谱密度研究院系: 信息工程系专业: 信息工程年级: 07级河北北方学院教务处制三种基本调制制度的功率谱密度研究摘要随着通信系统的规模和复杂度不断增加,传统的设计方法已经不能适应发展的需要,通信系统的模拟仿真技术越来越受到重视。而通信系统的计算机模拟仿真技 1 术是一种全新的系统设计方法,它可以让用户在很短的时间内建立整个通信系统模型,并对其进行模拟仿真。本文首先介绍了 SIMULINK 应用及通信技术的发展状况。然后对 SIMULINK 的工作原理及使用方法进行阐述,接着介绍基本的数字调制系统并分析三种调制制度 2ASK 、2FSK 和2PSK 的基本原理。再对三种调制制度的功率谱密度进行分析,最后利用 SIMULINK 建立系统模型对三种调制制度的功率谱密度进行模拟仿真并分析结果。关键词: 调制制度 SIMULINK 功率谱密度系统模型 Abstract munications systems continue to increase in size plexity, traditional design methods have been unable to meet the needs of development, communication system simulation technology more and more attention. munication puter simulation technology isa new design method, which allows users ina very short period of time to establish munication system model, and its 2 simulation. This paper introduces the application munication technologies SIMULINK development. Then the working principle and the use of SIMULINK method described, then introduced the basic digital modulation systems and analyze the three modulation system 2ASK, 2FSK and 2PSK the basic principles. Re-modulation system, the three power spectral density analysis, and finally create a system model using SIMULINK three modulation power spectral density of the system simulation and analysis results. Key words: M odulation system SIMULINK The power spectral density System Model 目录摘要............................................................................................................................ 1 Abstract .......................................................................................................................... 2 ............................................................................................................................. 4 研究目的及意义.............................................................................................................. 4 SIMULINK 简介...........................................................................................