毕业论文基于MATLAB的数字通信系统仿真设计.doc

安康学院 学年论文﹙设计﹚ 题 目 基于MATLAB的数字通信系统仿真设计 学生姓名 学号 所在院(系) 专业班级 指导教师 2013 年 6 月 23 日 基于MATLAB的模拟通信系统仿真设计 【摘要】通信是通过某种媒体进行的信息传递，目的是传输信息，通信系统是用以完成信息传输过程的技术系统的总称，作用是将信息从信源发送到一个或多个目的地。调制与解调在信息的传输过程中占据着重要的地位，是不可或缺的，因此研究系统的调制和解调过程就极为重要。MATLAB是集数值计算、图形绘制、图像处理及系统仿真等强大功能于一体的科学计算语言，它强大的矩阵运算和图形可视化的功能以及丰富的工具箱，为通信系统的调制和解调过程的分析提供了极大的方便。 本论文首先介绍了通信系统的概念，进而引出调制和解调，然后介绍了我们常用的几种调制和解调的方法。由于MATLAB具有的强大功能所以详细介绍了MATLAB通信系统工具箱，并给出了基于MATLAB的通信系统的调制与解调的实现，运用MATLAB仿真软件进行仿真。 【关键词】通信系统；调制与解调； MATLAB；2FSK；2ASK；2PSK；2DPSK Digital Communication System Simulation Based On MATLAB Author: Zhang Xiaowen （Grade10,Class2, Electronic and Information Engineering ，Department of electronics and Information Engineering .，Ankang University，Ankang 725000，Shaanxi） Tutor： Zhu Yan Abstract：Communication is through a media for transportation. Communication system which is used to complete the process of information transmission systems ,in general, is to send the information from the source to one or more destinations. Modulation and demodulation occupied an important position in the transmission of information which is essential, so the research about the modulation and demodulation process in the communication system is extremely important. MATLAB is a numerical computation, graphics rendering, image processing and system simulation and other powerful features in one of the scientific computing language, it is a powerful matrix calculation and graphical visualization features and a rich toolbox provides a great convenience for the communication system of modulation and demodulation process. This paper introduces the concept of the communication system, and then leads to modulation and demodulation, and then introduced several of our commonly used method of modulation and demodul