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Unformatted text preview: Final Exam of ECE301, Prof. Wang’s section Friday 7–9pm, December 17, 2010, LILY 1105. 1. Please make sure that it is your name printed on the exam booklet. Enter your student ID number, email address, and signature in the space provided on this page, NOW! 2. This is a closed book exam. 3. This exam contains multiple choice questions and workout questions. For multiple choice questions, there is no need to justify your answers. You have one hour to complete it. The students are suggested not spending too much time on a single question, and working on those that you know how to solve. 4. Neither calculators nor help sheets are allowed. Name: Student ID: Email: Signature: Question 1: [12.5%, Workout question] Consider a discrete time signal x [ n ] x [ n ] = n if 0 ≤ n ≤ 2 3 if 3 ≤ n ≤ 100 otherwise . (1) Suppose y [ n ] = x [ n 1]. 1. [7.5%] Find the discrete time Fourier transform of x [ n ]. 2. [5%] Find the discrete time Fourier transform of y [ n ]. If you do not know the answer to the first subquestion, you can assume x [ n ] = ( n + 1)2 n U [ n ] and you will still get full credit if your answer is correct. Question 2: [12.5%, Workout question] Consider a continuous time signal[12....
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This note was uploaded on 02/12/2012 for the course ECE 301 taught by Professor V."ragu"balakrishnan during the Spring '06 term at Purdue.
 Spring '06
 V."Ragu"Balakrishnan

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