ecen444-fall09-hw1

# ecen444-fall09-hw1 - 2 n-cos 3 4 n 6 sin 2 3 n 2 Problem 2...

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ECEN 444: Digital Signal Processing, Fall‘09 Homework #1 Homework Assignment #1 Due date – Sep. 16, 2009 (Wed), 12:40PM in class. Problem 1. Periodic signals (8 points) Determine whether or not each of the following signals is periodic. In case a signal is periodic, specify its fundamental period. (a) x a ( t ) = cos( 1 3 t + π 4 ) + sin( 1 2 t - π 4 ) (b) x ( n ) = cos( 1 3 n + π 4 ) + sin( 1 2 n - π 4 ) (c) x ( n ) = e j (3 n + π ) (d) x ( n ) = sin(
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Unformatted text preview: 2 n )-cos( 3 4 n + 6 ) + sin( 2 3 n- 2 ) Problem 2. Discrete Fourier series (12 points) Solve problem P4.7 in the textbook. Problem 3. Discrete-time Fourier transform (20 points) Solve problem P4.9 (b)(f) in the textbook. Problem 4. Discrete-time Fourier transform (10 points) Solve problem P4.14 in the textbook....
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## This note was uploaded on 02/08/2010 for the course ECEN 444 taught by Professor Chan during the Fall '09 term at Texas A&M.

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