Wong & Lok: Theory of Digital Communications
0. Overview
Chapter 0
Overview
Our goal is to acquire a basic understanding of digital communications. To do so, we study the basic design and analysis principles of digital communication systems. This set of n
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Chapter 4
The Processor
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Introduction
CPU performance factors
Instruction count
CPI and Cycle time
A simplified version
A more realistic pipelined version
Simple subset, shows most aspects
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D
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Chapter 6
Storage and Other I/O Topics
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Introduction
I/O devices can be characterized by
Behaviour: input, output, storage
Partner: human or machine
Data rate: bytes/sec, transfers/sec
I/O bus
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Chapter 3
Arithmetic for Computers
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Arithmetic for Computers
Operations on integers
Addition and subtraction
Multiplication and division
Dealing with overflow
Floating-point real numbers
Repres
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Chapter 2
Instructions:
Language of the Computer
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Computer Component
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Faculty of Computer Science & Engineering
2
Instruction execution process
Fetch: from memory
PC increa
HW #7 Solution
1. r (t ) = A[ bI , n pT (t nT )] cos(2f c t + ) A[ bQ , n pT (t nT )] sin( 2f c t + )
n
let, I =
b
I ,n
n
pT (t nT ) and Q =
n
b
Q ,n
pT (t nT )
n
then r (t ) = AI cos(2f c t + ) - AQ sin( 2f c t + )
r 2 (t ) = [ AI cos(2f c t + ) - AQ sin
HW #3
1. (a) Since s0(t) and s1(t) are antipodal signals, = 0
(b) Pb, 0 = Pb, 1 = Pb = Q(
s 0 (T0 ) s 1 (T0 )
), Let, T0 = T
2 Rn (0)
s 0 (T ) = - s 1 (T ) , Pb = Q(
s 0 (T0 )
)
Rn (0)
2
N0
N 0 | g |
| h | 2 =
, Since | g | 2 =
2
2
2
R n (0) =
Hence, R n
HW# 2 solution
1. Proakis (5-2, 5-4, 5-8, and 5-10)
EEL6535
2. (a) Suppose s0(t) is being sent. Then, Y(t) = s0(t) + X(t), where X(t) is the AWGN,
T
and Z =
T
g(t)[s0(t) + X(t)]dt =
0
g(t)s0(t) dt +
0
T
E[ Z ] =
T
T
g(t)s0(t) dt +
0
g(t)X(t)dt
0
g(t)E[X(t
HW#1 solution
2. & 5. Proakis problems (pp.76-79)
EEL6535
3. Pr( X > Y) = Pr( X Y > 0 )
Given any two constants a and b(not both zeros), aX + bY is also a
Gaussian random variable with amx + bmY and variance
2
a2 X + 2ab X Y + b2 Y2 ( class note p 1.16).
Wong & Lok: Theory of Digital Communications
4. ISI & Equalization
Chapter 4
Intersymbol Interference and Equalization
The all-pass assumption made in the AWGN (or non-dispersive) channel model is rarely practical. Due
to the scarcity of the frequency spe
Wong & Lok: Theory of Digital Communications
3. Synchronization
Chapter 3
Synchronization
Information about the communication channel, such as the channel phase response, is necessary for
the construction of the various receivers discussed in Chapter 2. I
Wong & Lok: Theory of Digital Communications
2. Modulation & Demodulation
Chapter 2
Modulation and Demodulation
The most fundamental building block of a digital communication system is the modulator-demodulator
(MODEM) pair. In this chapter, we study the
Wong & Lok: Theory of Digital Communications
1. Review
Chapter 1
Review on Background Materials
We start by reviewing some important concepts which will be needed in the following chapters.
1.1
Signals and Systems
1.1.1 Denitions
Continuous-time signal A
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Chapter 1
OVERVIEW:
Abstracts and Technology
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The Computer Revolution
Progress in computer technology
Makes novel applications feasible
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Based on the Moores Law
Computers in automobiles
Cell