基于MATLAB的数字调制技术的仿真与分析.docVIP

基于Matlab的数字调制技术的仿真与分析 内容摘要 通信作为传输信息的手段或方式，与传感器技术、计算机技术相互融合，已经成为21世纪国际社会和世界经济发展的强大推动力。可以预见，未来的通信对人们的生活方式和社会的发展将会产生更加重大和意义深远的影响。数字调制作为通信的重要组成部分，它直接影响到系统的性能。所以，研究数字调制系统有着重要的意义。本文重点介绍了2ASK、2FSK、2PSK、2DPSK调制与解调的工作原理，以及用MATLAB分别对其进行设计和仿真。论文共分为四部分：第一部分主要介绍了数字通信的现状和发展趋势、数字调制的意义以及MATLAB简介；第二部分我们详细讲述了2ASK、2FSK、2PSK、2DPSK调制与解调的工作原理；第三部分我们将着重介绍各调制系统的MATLAB仿真，并得出结论；第四部分是对该次论文设计进行简单的总结。 【关键词】 调制 解调 Matlab 仿真 The digital modulation technology simulation and analysis based on the Matlab Abstract As a means of communication transfer information way,and sensing technology, computer technology integration has become the 21 st century international society and economic development of strong force. We can see, in the future of the communication on peoples way of life and the development of the society will produce a more significant and profound fluence. Digital modulation system as an important part of communication, which directly affect the performance of the system. So, the digital modulation system has great important significance. This paper partly introduces the 2 ASK, 2 FSK, 2 PSK, 2 DPSK modulation and demodulation of the working principle, and use of MATLAB for the design and respectively simulation. Paper is divided into four parts: the first part of this paper introduces digital communication and the present situation of the development trend, and meaning of digital modulation and MATLAB introduction; The second part detailed about 2 ASK, 2 FSK, 2 PSK, 2 DPSK modulation and demodulation of the principle of work, The third part we will focus on the introduction of the modulation system MATLAB simulation and draw conclusion; The fourth part is to the paper summarizes briefly the design. 【Key words】 Modulation Demodulation Matlab Simulation  目 录 1、绪论 1 1.1 数字通信的发展现状和趋势 1 1.2 数字调制的意义 1 1.3 Matlab简介 1 2、数字调制系统的相关原理 1 2.1 二进制振幅键控（2-ASK） 2 2.2 二进制频移键控（2-FSK） 3 2.3 二进制频移键控（2-PSK） 5 2.4 二进制相移键控（2-DPSK） 6 3、数字调制系统的仿真与分析 8 3.1 二进制振幅键控（2-ASK）的仿真与分析 8 3.2 二进制频移键控（2-FSK）的仿真与分析 1