# 5 - EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher...

This preview shows page 1. Sign up to view the full content.

This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher Wilson and Mayank Devam Name:__________________________ Quiz A _____ ______________________ UFID:________________ Last First Score: _____/10 Consider the following signal . In order to compute the 3-pt DFT of the signal we apply the definition for k=0,1,2 where N=3. Calculate the DFT Coefficients as specified below. 1. (2pt) Calculate the Coefficient X[0] 2. (2pt) Calculate the Coefficient X[1] 3. (2pt) Calculate the Coefficient X[2] 4. (2pt) Short Answer: The limits for summation in calculating the coefficients of the DFT are evaluated over N frequencies. Sometimes we will have a sequence x[n] with length L, where L < N. In such cases, what must be done to x[n] to carry out the computation? Pad the signal with N-L zeroes. 5. (2pt) Short Answer: What is the algorithm that can evaluate the DFT reducing the number of computations needed for N points from 2N2 to ? FFT. EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher Wilson and Mayank Devam Name:__________________________ _____ ______________________ UFID:________________ Last Quiz B First Score: _____/10 Consider the following signal . In order to compute the 3-pt DFT of the signal we apply the definition for k=0,1,2 where N=3. Calculate the DFT Coefficients as specified below. 1. (2pt) Calculate the Coefficient X[0] 2. (2pt) Calculate the Coefficient X[1] 3. (2pt) Calculate the Coefficient X[2] 4. (2pt) Short Answer: The limits for summation in calculating the coefficients of the DFT are evaluated over N frequencies. Sometimes we will have a sequence x[n] with length L, where L < N. In such cases, what must be done to x[n] to carry out the computation? Pad the signal with N-L zeroes. 5. (2pt) Short Answer: What is the algorithm that can evaluate the DFT reducing the number of computations needed for N points from 2N2 to ? FFT. EEL3135 Fall 2011 Quiz 5 BJ Trivedi , Christopher Wilson and Mayank Devam Name:__________________________ Quiz C _____ ______________________ UFID:________________ Last First Score: _____/10 Consider the following signal . In order to compute the 3-pt DFT of the signal we apply the definition for k=0,1,2 where N=3. Calculate the DFT Coefficients as specified below. 1. (2pt) Calculate the Coefficient X[0] 2. (2pt) Calculate the Coefficient X[1] 3. (2pt) Calculate the Coefficient X[2] 4. (2pt) Short Answer: The limits for summation in calculating the coefficients of the DFT are evaluated over N frequencies. Sometimes we will have a sequence x[n] with lengt h L, where L < N. In such cases, what must be done to x[n] to carry out the computation? Pad the signal with N-L zeroes. 5. (2pt) Short Answer: What is the algorithm that can evaluate the DFT reducing the number of computations needed for N points from 2N2 to ? FFT. ...
View Full Document

## This note was uploaded on 01/03/2012 for the course EEL 3135 taught by Professor ? during the Fall '08 term at University of Florida.

Ask a homework question - tutors are online