ECE 220
HOMEWORK 1 SOLUTIONS
Format: The final solution is shown for the questions without any detailed steps. If you wish to see the details, please see a TA. 1. (a) (b) (c) frequency 500 50 125 radian freq 1000 100 250 phase /2 /3 amplitude 5 5 5
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 1: Chapters 1 and 2
Rules:
1. Due by noon, Friday, February 8, 2013, in the ECE4960 box next to room 219 Phillips Hall
2. Solve all the problems below for 100 points  independent work only.
3
EE 2200 / Spring 2010: Section FOUR
1
ECE 2200 / Spring 2010 SECTION Four (Week 5: Feb 2225)
1. The impulse response h[n] of an FIR lter is h[n] = [n 1] 3 [n 3] + 0.1 [n 4] + 0.04 [n 7] Write the dierence equation for the FIR lter. 2. Consider the unit s
ECE3150: Introduction to Microelectronics
c Ehsan Afshari
Spring 2013
Report and the simulation les are due on Monday May 13th, 12pm.
Please plan accordingly, designs after the deadline will not be considered.
Extra Credit
In this extra credit project, yo
When dealing with graphs on chapter 3
All you need are 3 things

w (frequency of the forcing function) if you have something like u+5u+3u = Cos 3t : your forcing
frequency is 3
look for the in Cos t or Sin t

wo (natural frequency)

(damping coefficie
1. [ 18 pts total ] The functions x; ( t ) and x; ( t ) solve the system of differential equations
%=xl . %=2x1312 . (1)
(a) [6 pts ] Ifsystem (1) is written in the form .5 ' = A; , nd the eigenvalues of the matrix A.
' z n o (nutsm : 0 99M; gar L,
X
ECE 2200
Multimedia Signal Processing
Spring 2013
Exam 3 Problems from Previous Years
These problems are from previous exams.
1.
Multiple choice: general questions.
(a) Recall that a onedimensional orthogonal blockbased transform can be computed via
mat
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 8: CDMA + Mobility Management
Rules: 1. Due by Friday, May 3, 2013
2. Solve all the problems below for 100 points  independent work only.
3. Show full solution to the problems  do not skip s
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 7: Chapter 9 (including MAC Protocols)
Rules: 1. Due by Friday, April 26, 2013
2. Solve all the problems below for 100 points  independent work only.
3. Show full solution to the problems  d
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 6: Chapter 5 (Radio Propagation Models, SmallScale Fading and Multipath)
Rules: 1. Due by Friday, April 12, 2013
2. Solve all the problems below for 100 points  independent work only.
3. Sho
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 4: Dynamic Channel Allocation
Rules: 1. Due by Tuesday, March 10, 2013
2. Solve all the problems below for 100 points  independent work only.
3. Show full solution to the problems  do not sk
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 3: Chapter 3 (Introduction to the Cellular Principle)
Rules:
1. Due by Friday, February 22, 2013, in class
2. Solve all the problems below for 100 points  independent work only.
3. Show full
Wireless Networks
Prof. Zygmunt J. Haas
Spring 2013
Homework # 2: Chapter 3 (Introduction to the Cellular Principle)
Rules:
1. Due by 12:00noon, Friday, February 15, 2013
2. Solve all the problems below for 100 points  independent work only.
3. Show full
BJT Amplier Circuits
As we have developed dierent models for DC signals (simple largesignal model) and AC signals (smallsignal model), analysis of BJT circuits follows these steps: DC biasing analysis: Assume all capacitors are open circuit. Analyze the
ECE 3150: Introduction to Microelectronics
Question1 HW2
March 21, 2013
In this question, we are given a discretized dierential equation in the form of x[n] = 1/2x[n] + 1/4x[n
1]+1/4x[n +1] at the steady state and a set of boundary conditions. Starting f
ECE3150, Cornell University Final Exam
Spring 2010, Prof. Lal
Question 2. inverter as an amplifier
a. (3 points) Write down the expression for the current flowing through the ntype transistor in
terms of VIN and VOUTand transistor parameters, assum
Eigenvalues
r1 r2 0
Type of
Critical
Point
Source
Stability
r1 r2 0
Sink
Asymptotically
Stable
Notice how all the solutions
approach 0
r2 0 r1
Saddle
Point
Unstable
Notice how all the arrows go
outward and only 1 arrow hits
zero in (b).
In (a) only look a
ECE2200, Fall 2010, Homework 1
due September 16 in class
Print your name, NetId, and lab section in the top right corner on all pages.
NOTE: This homework is based on Chapters 3,4 and 5 in the textbook.
Problem 1
Let x1 (t) = cos(30t) and x2 (t) = cos(270
ECE2200, Fall 2010, Homework 3
due September 23 in class
Print your name, NetId, and lab section in the top right corner on all pages.
NOTE: This homework is based on Chapters 46 in the textbook.
Problem 1
The textbook uses [n] to denote the discrete imp
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SECTION
1
NAME
ECSE2610 Computer Components and Operations
Homework # 13 (last homework)
Due Wednesday, May 2, 2012 in studio
1. (5 points) Consider the following instructions:
A. ADD mem<address> to Accumulator
B. STORE Accumulator to mem<address>
F
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SECTION
1
NAME
ECSE2610 Computer Components and Operations
Homework # 12
Due Wednesday, April 25, 2012 in studio
1. (10 points) Design a combination lock controller that has the same specification as the last
example we did in the class. The only dif
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SECTION
1
NAME
ECSE2610 Computer Components and Operations
Homework # 11
Due Wednesday, April 18, 2012 in studio
1. (10 points) Design a combination lock with two inputs, X1 and X2. Open for the sequence
X1, X2, X2, X1. State any assumptions you make
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SECTION
1
NAME
ECSE2610 Computer Components and Operations
Homework # 10
Due Wednesday, April 11, 2012 in studio
Problems are from the Wakerly textbook, 4th edition.
1. (4 points) 7.18
2. (4 points) 7.46
3. (4 points) Consider the following state dia