4.0 Introduction 4.1 Periodic Sampling 4.2 Frequency-Domain Representation of Sampling 4.3 Reconstruction of a Bandlimited Signal from its Samples 4.4 Discrete-Time Processing of Continuous Time signals 4.5 Continuous-time Processing of Discrete Time Signal

5.1 Digital Processing of Continuous-Time Signals Digital processing of a continuous-time signal involves the following basic steps: (1) Conversion of the continuous-time signal into discrete-time signal, ()Processing of the discrete-time signal, (3) Conversion of the processed discrete- time signal back into a continuous-time signal

电子科技大学《数字信号处理》英文PPT课件： Chapter 3 Transform-Domain Representation of Discrete-Time Signals

Enhancement of HIPERLaN/2 Systems using Space-Time Coding Mikael gidlund Radio Communication Systems Group Department of Signals, Sensors and Systems Royal Institute of Technology(KTh) SE-100 44 Stockholm. Sweden Email: mikael gidlund@mhse

本章将学习建立信号与系统的数学描 述与数学表示,借以研究信号与系统分 析中的基本概念及基本性质,为以后各 章的学习打下基础

•拉氏变换的定义——从傅立叶变换到拉氏变换 •拉氏变换与傅氏变换的关系 •拉氏变换的性质，收敛域 •卷积定理(S域) •系统函数和单位冲激响应

一、Z变换的基本概念和基本性质 二、变换的域分析 三、离散系统的系统函数 四、离散系统的频率响应

本课程的重要性和要 解决的问题 信息时代的特征 用信息科学和计算机技术的理论 和手段来解决科学、工程和经济 问题 对各种信息进行提取、传输和处 理,必然涉及到信号与系统

一、(10分)已知某连续时间信号如图所示。 1.绘出信号x1(t)=x(4-)的波形; 2.若x(t)的频谱是X(o),试用X()表 示信号x1(t)的频谱X()

Another(important! ) example: Periodic Impulse train n(t)=∑(t Sampling function important for sampling .2T