Jaypee Institute of Information Technology (JIIT) 2008 B.E Electronics & Tele-Communication Engineering Test 3 : Digital Signal Processing - Question Paper
JAYPEE UNIVERSITY OF INFORMATION TECHNOLOGY, WAKNAGH AT
Test-3
B.Tcch (ECE), V Semester
bourse Code: 07B51ECT10 Max Time: 1 hr 30 min Course Name: Digital Signal Processing__Max Marks: 60
Note: Attempt all questions. Maximum marks will he scale down to 30.
Ql. (a) Consider the finite duration signal x(n)=(l. 2, 2, Ucompute ihe tour poini DFT, using its definition.
<b) Determine the impulse response h(n) of the system described by following difference equation:
>(> = x(n) + 2j(rt - I) - >t -1) |6+6]
OR
Determine the output y(n) of a system whose impulse response h(n) is given bv:
h(n)={*U,-l>
to an input x(n)-{l,2.3.4,5,6,5,4,3,2,1,1,2,3,...}which is periodic with Nl I, by using overlap add method. (12)
02. Obtain an expression for the unit sample response [h<n)J of an ideal FIR low pass filter and discuss the magnitude response realized with Hamming window. AisoNuitc necessary expressions for time domain and frequency domain response for this window. j j 2|
Q3. Design a digital filter using Bessel filter (analog) transfer function
#(*)*5;- Employ a sampling frequency <y, =1 rad/sec. 1121
5+35 + 3
Q4. (a) Briefly explain the application of multi-rate of decimation process in signal processing. |6j
(b) Realms the following system function using suitable structure:
161
QS. (a) Compute 8 point FFT for the sequence r(n) = n +1 by using DIF FFT algorithm |6|
(b) Using suitable analytical steps show that IDFT of a frequency domain sequence can be obtained by modifying FFT algorithm. |6|
Attachment: |
Earning: Approval pending. |