《通信技术专业毕业论文答辩PPT.doc

摘要 本文研究的主要内容是《通信原理》仿真实验平台的设计与实现---模拟信号数字化Matlab软件仿真。若信源输出的是模拟信号，如电话传送的话音信号，模拟摄像机输出的图像信号等，若使其在数字信道中传输，必须在发送端将模拟信号转换成数字信号，即进行A/D变换，在接收端则要进行D/A变换。模拟信号数字化由抽样、量化、编码三部分组成。而且就针对量化就行更加具体的研究以及讨论，由于数字信号的传送具有稳定性好，可靠性高，方便传送和传送等诸多优点，使得被广泛应用到各种技术中。不仅如此，Matlab仿真软件是常用的工具之一，可用于通信系统的设计和仿真。在科研教学方面发挥着重要的作用。Matlab有诸多优点，编程简单、操作容易、处理数据迅速等。 本文主要阐述的是模拟信号数字化的理论基础和实现方法。利用Matlab提供的可视化工具建立了数字化系统的仿真模型，详细讲述了抽样、量化、编码的设计，并指出了在仿真建模中要注意的问题。在给定的仿真条件下，运行了仿真程序，得到了预期的仿真结果。 关键词：Matlab、模拟信号数字化、仿真 Abstract The main contents of this paper is to design and implementation of an analog signal is digitized --- Matlab software simulation, Communication Theory simulation platform. If the source is an analog signal output , such as telephone transmission voice signal , the analog image signals output from the camera , if the digital channel to transmit , at the transmitting end must convert the analog signal into a digital signal , i.e. A / D converting , at the receiving end will carry out D / A conversion . The analog signal is digitized by sampling, quantization , encoding the three component parts . And the line for the quantification studies and discussions more specific , since the transmission of digital signals having a good stability, high reliability, easy transfer and transport many other advantages , has been widely applied to a variety of such techniques . Not only that , Matlab simulation software is one of the commonly used tools for design and simulation of communication systems. Plays an important role in research and teaching . Matlab has many advantages , programming is simple, easy to operate , fast data processing and so on. ???This paper describes an analog signal digitization theoretical basis and implementation. Matlab using visualization tools provided by the establishment of a digital system simulation model , a detailed account of the sampling , quantization, coding design , and pointed out in simulation modeling to pay attention to. Under the given conditions of the simu