(1a.) Definitions for xn sequence: DTFT  Xe xne
j n
jn
IDTFT  xn
1 2
Xe j e jn d

(1b.) The DTFT is uniformly convergent if xn is absolutely summable, i.e., xn . Meansquare convergent if xn is not absolutely summable (has fini
EE 448 Midterm Exam
March 6, 2007 Name: ID (last 4 digits): Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 2 hours to complete the exam. Write your name and ID number on all pages
Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
Problem 6
Problem 7
Problem 8
Problem 9
Note: Part B can be further simplified to numerator = [32, 144, 640] and denominator =
[ 3, 28, 64, 256]
Problem 10
Problem 1
Note: the numerator of all Z transform should be 2+0.2z^(1).
Problem 2
Note: z=0 is not a pole and should not be excluded from ROC R1. The right answer for
ROC R1 is : z<0.3.
Problem 3
Note: For the 2sided sequence in Part (a), the minus sig
Homework # 3
Instructions:
You may solve the problems according to the following schedule:
1. After Lecture #6: Problems 1 4
2. After Lecture #7: Problems 5 7
1. Determine the ztransform and ROC of the following four sequences:
(a) x1 [n] = (0.4)n [n] +
EE 448 Midterm Exam
March 9, 2015
Name:
ID (last 4 digits):
Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 100
minutes to complete the exam. Write your name and ID number on all pages of
Chapter 8
The Web, DHCP,
NTP and NAT
TCP/IP Essentials
A LabBased Approach
Fall 2015
World Wide Web (WWW)
The first WWW browser was written by Sir Tim BernersLee in
1990.
The popularity of WWW resulted in the exponential growth for the
Internet.
In W
Homework # 4
Instructions:
You may solve the problems according to the following schedule:
1. After Lecture #8: Problems 1 4
2. After Lecture #9: Problems 5 6
3. After Lecture #10: Problems 7 10
1. Determine all possible causal stable transfer functions
Problem 1
Problem 2
Problem 3
Problem 4
Problem 5
a) From the given parameters,
s p 0.59 0.47 0.12
min( p , s ) min(0.001, 0.007) 0.001 20log10 ( ) 60db
From Table 10.2, only the Blackman window can meet the requirement on
minimum attenuation.
5.56 5.56
Homework # 5
Instructions:
You may solve the problems according to the following schedule:
1. After Lecture #11: Problems 1 5
1. Design a secondorder highpass filter HHP (z) with a 3dB cutoff frequency at
c = 0.47 by transforming the following lowpas
Problem 1(c): Answer is ii). Causality implies that the ROC extends from the outermost pole. Stability implies that the ROC should also include the unit circle. Therefore, the outermost pole should be inside the unit circle. Hence, all poles should b
a) Analog signal gn g a t tnT w/ highest freq m . Freqdomain exp DTFT Ge jw  CTFT G a j. 1 Ge jw T G a j w  j 2k . 2 2 m or T m to avoid aliasing. T T T
k
b) Bilinear transform and an expression (w/ analog freq to digital freq w). s
EE 448 Midterm Exam
March 14, 2005 Name: ID (last 4 digits): Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 2 hours to complete the exam. Write your name and ID number on all page
EE 448 Midterm Exam
March 8, 2004 Name: ID (last 4 digits): Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 2 hours to complete the exam. Write your name and ID number on all pages
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EE 448 Final Exam
May 9, 2005 Name:
ID (last 4 digits):
Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 2 hours to complete the exam. Write your name and ID number on all pages o
EE 448 Final Exam
May 3, 2004
Name: ID (last 4 digits): Score:
Instructions: This exam is closedbook and closednotes with the exception of an 8.5 11 crib sheet. You have 2 hours to complete the exam. Write your name and ID number on all pages of
IPv6
TCP/IP Essentials
EL5373 Supplement Topic
Fall 2015
IPv6 Background
In the early 1990s, the IETF realized that IPv4 address space was near
exhaustion
Host density ratio (H) analysis for address assignment efficiency: RFC1715
H
log (number of object