基于MATLAB的离散信号与系统分析毕业论文.doc

湖北工业大学商贸学院毕业设计 PAGE PAGE III 摘 要 数字信号处理主要包括离散信号与系统分析的基本理论，离散傅里叶变换、离散快速傅里叶变换和数字信号处理的实现。本文主要设计的是离散信号与系统分析及MATLAB的实现，为此我设计了基于MATLAB软件平台的实验系统，突出数字信号处理理论的技术应用，如在信号谱分析、信号的时频分析及应用等内容中，都利用MATLAB实现其工程应用。基于MATLAB软件集数值分析、矩阵运算、信号处理和图形显示于一体，构成了一个方便的、界面友好的用户环境，而且还具有可扩展性特征。同时随着微电子技术和数字信号处理技术的发展，最成功的DSP芯片当数美国德州仪器公司(Texas Instruments，简称TI)的一系列产品，其DSP市场份额占全世界份额近的50％。目前DSP芯片的价格越来越低，性能价格比同益提高， 具有巨大的应用潜力。经过十几年的发展，DSP器件在高速度，可编程，小型化，低功耗等方面都有了长足的发展，单片DSP芯片最快每秒可完成16亿次(1600MIPS)的运算，生产DSP器件的公司也不断壮大。DSP芯片的硬件实现，软硬件的同时实施，若再结合相应的数字信号处理方面的书籍，初学者便能在较短的时间内系统的、感性的理解和学习数字信号处理的相关知识。 关键词：MATIAB 数字信号处理（DSP） 离散 信号与系统 用户环境 Abstract Include digital signal processing discrete signals and systems analysis of the basic theory, discrete Fourier transform, discrete fast Fourier transform and digital signal processing implementation. In this paper, the design is a discrete signal and system analysis and MATLAB implementation, and I designed a software platform based on MATLAB experimental system, highlighting the technical theory of digital signal processing applications, such as in signal analysis, signal analysis and application of time-frequency and other contents, are using MATLAB to achieve their project application. Set based on MATLAB software, numerical analysis, matrix computation, signal processing and graphical display on the whole, constitute a convenient, user-friendly user environment, but also has scalability characteristics. At the same time as the microelectronics and digital signal processing technology, the most successful DSP chip when the number of Texas Instruments (Texas Instruments, referred to as TI) in the range of products, the DSP market share of nearly 50% of worldwide share. Current DSP chip prices lower and lower, cost performance increase with the benefits, with great potential. After ten years of development, DSP devices in high-speed, programmable, small size, low power consumption and so have seen significant development, the fastest single DSP chip 1.6 billion times per