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摘要
当今,大部分现代通信系统都使用数字调制技术。由于数字通信具有建网灵活,容易采用数字差错控制技术和数字加密,便于集成化,并能够进入综合业务数字网(ISDN网),所以通信系统都有由模拟方式向数字方式过渡的趋势。因此,对数字通信系统的分析与研究越来越重要,数字调制作为数字通信系统的重要部分之一,对它的研究也是有必要的。
在数字通信的教学和设计中,传统的方法是手工分析与电路板试验。较为麻烦,易使人们感到乏味。所以利用MATLAB语言作为工具,制作出了数字调制演示系统GUI设计方案。方便其他对这一方面不太了解,但又用到二进制调制各个阶段波形的人群。设计的演示系统设计简单、结构一致,易于别人能快速利用。
本文中设计的数字调制演示系统,利用的是MATLAB 中GUI图形用户界面。在此界面中可以自主选择二进制调制的方式(这里主要包括2ASK,2FSK,2PSK这三种二进制调制技术),以及各方式中哪一阶段的波形,点击按钮便可展示出其选择的波形。
关键词:MATLAB;二进制调制;GUI用户界面设计。
ABSTRACT
Today, most munication systems use digital modulation techniques. Because the munication techniques is work, easy to use digital error control technology and digital encryption techniques and integration. Besides it can enter the integrated services work (work), so munication system has the transition trend that it change from analog to digital .Therefore , the analysis and research of munication system is more and more important. Digital modulation is one of the important part of munication system, so it is necessary to study it.
In this paper, the traditional method is manual analysis and circuit board test in the teaching and the design of munication. It is plicated and it is easy to make people boring. So using MATLAB language as a tool, we produce the GUI design of digital modulation system. It is convenient to someone who don't know much about this aspect, whereas he use all stages waveform of the binary modulation. Design of the demonstration system is very simple, consistent structure, and easy that others can quickly use it.
Digital modulation system designed in this paper uses the GUI graphical user interface in MATLAB. In this interface you can choose the binary modulation method (include three kinds of binary modulation such as 2ASK, 2FSK, 2PSK), and the waveform of every stage . Clicking on the button can display the selected waveforms.
Key words:MATLAB;Binary modulation ; the design of user interface.
目录
摘要 I
ABSTRACT II
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