7.1ATM的基本概念 7.2ATM协议结构 7.3IP/ATM集成交换

6.1N-ISDN概述 6.2用户网络接口 6.3N-ISDN的局间信令 6.4ISDN设备

2.1信令的基本概念和分类 2.2用户线信令 2.3中国No.1信令 2.4N0.7信令系统概述 2.5消息传递部分 2.6电话用户部分 2.7信令连接控制部分 2.8事务处理能力

4.1程控交换软件的概述 4.2运行软件的一般结构 4.3程序的级别及调度 4.4呼叫处理程序

一、卫星通信应用简介 二、Ku波段卫星接收系统原理及安装调试 三、卫星数据广播(IP)节目的接收与应用

Comb Filters The simple filters discussed so far are characterized either by single passband and/or a single stopband There are applications where filters with multiple passbands and stopbands are required The comb filter is an example of such filters Copyright 2001, S. K. Mitra

Later in the course we shall review various methods of designing frequency-selective filters satisfying prescribed specifications · We now describe several loworder- FIR and IIR digital filters with reasonable selective frequency responses that often are satisfactory in a number of applications Copyright 2001, S. K. Mitra

Linear-Phase FIR Transfer Functions It is nearly impossible to design linear- phase IIR transfer function It is always possible to design an FIR transfer function with an exact linear-phase response

Stability Condition in Terms of the Pole Locations A causal lti digital filter is BIBO stable if and only if its impulse response h[n] is absolutely summable, i.e

Phase and Group Delays The output y[n] of a frequency-selective LTI discrete-time system with a frequency response(@) exhibits some delay relative to the input x[n] caused by the nonzero phase response 0(@) =arg{()} of the system