信號(hào)與系統(tǒng)11-121試卷及參考解答卷

1、學(xué)院 姓名 學(xué)號(hào) 任課老師 考場(chǎng)教室_選課號(hào)/座位號(hào) 密封線以內(nèi)答題無(wú)效第5頁(yè) 共5頁(yè)電子科技大學(xué)2011 -2012 學(xué)年第 1 學(xué)期期 末 考試 A 卷課程名稱：_ 信號(hào)與系統(tǒng)B大綱 考試形式： 一頁(yè)紙開卷 考試日期： 20 12年 1月 6 日 考試時(shí)長(zhǎng)：_120_分鐘課程成績(jī)構(gòu)成：平時(shí) 10 %， 期中 20 %， 實(shí)驗(yàn) 10 %， 期末 60 %本試卷試題由_1_部分構(gòu)成，共_5_頁(yè)。題號(hào)一二三四五六七八九十合計(jì)得分Attention: You must answer the following questions in English.1. (15 points) Consider

2、 an LTI system with unit impulse response , if the input is , determine the output .Figure 12.（15 points）The Fourier transform of the signal is shown in Figure 1. Determine the function of time .Figure 1Figure 23.（15 points）Consider the system illustrated in Figure 2, if we know and . Suppose the in

3、put ，sketch the spectrum of ,and .Figure 2Figure 34.( 15 points ) Let denote the Fourier transform of the signal depicted in Figure 3.Figure 3(a) Find (b) Find (c) Find 5.(20 points) Consider a causal system for which the input and output arerelated by the differential equation(a) Determine the syst

4、em function of the system and sketch the pole-zero pattern, then indicate the ROC of .(b) Determine the unit impulse response of this system, is this system stable ?(c) If the input is , determine the output .6. (20 points) Consider an LTI system with input and output .(a) Find the system function . (b) Determine the unit impulse response , is this system causal and stab