ECE 5520 Digital Communication Systems (Spring 2020)
Course Notes
Chapters 14 Introductions and Backgroud
Syllabus
Chapter 1
The Big Picture
History of Modems
Signal Processing in Modems
Chapter 2: ContinuousTime Signals and Systems
Fourier Series (FS)
ContinuousTime Fourier Transform (CTFT)
Linear TimeInvariant (LTI) Systems
Homework 1: Chapter 2, Problems 1(20 points), 3(20 points), 6(10 points), 10(20 points), 11(30 points).
Homework 1 solutions: here.
Chapter 2:
Energy and Power Spectral Density
Homework 1
Chapter 3: Discrete Signals and Systems.
Sampling Theorem
Chapter 3:
Sampling Theorem
Discrete Fourier Transform (DFT)
DiscreteTime Signals and Systems
Homework 2: Chapter 2, Problem 12 (10 points), Chapter 3, Problems 1(50 points), 2(10 points), 3(15 points), 4(10 points), 5(15 points)
Homework 2 solutions: Problem 12, Matlabe Code
Homework 2
Chapter 4:
Some Useful Random Variables
Chapter 4:
Some Useful Random Variables
The Central Limit Theorem
Significance of Various Random Variables in
Digital Communications
SignaltoNoise Ratio and dB Scale
Homework 3:Chapter 4: Problems 1 (10 points), 2(8 points), 3(8 points), 4(20 points), 5(8 points), 6(8 points), 7(8 points), 8(8 points), 9(8 points), 10(14 points).
Homework 3 solutions: here.
Midterm 1 Exercise Exam: here, solutions.
Chapter 4:
Autocorrelation Function and Power Spectral Density of Contintuoustime Random Processes
Autocorrelation Function and Power Spectral Density of Discretetime Random Processes
White Noise
Homework 3
Exercise Exam 1
Chapter 5:
Pulse Amplitude Modulation
PulseShape Designs for BandLimited Communications
Homework 4: Chapter 5, Problems 1(20 points), 2(10 points), 3(10 points), 4(20 points), 5(10 points), 6(10 points), 7(20 points).
Homework 4 solutions: here.
Chapter 5:
PulseShape Designs for BandLimited Communications
Timing Phase
Modulation Techniques: AM
Chapter 5:
Modulation Techniques: QAM
Homework 4
Chapter 5:
Modulation Techniques
SSB, VSB
QAM basd complex signals
PSK
QAM Matlab code
Power efficient QAM constellation
PAPR
Homework 5: Chapter 5, Problems 8(20 points), 9(10 points), 10(20 points), 11(20 points), 13(10 points), 16(10 points), 17(10 points).
Homework 5 solutions: here.
Homework 5
Chapter 5:
Modulation Techniques
Power efficient QAM constellation
PAPR
Vestigial SideBand (VSB) Modulation
Chapter 5:
Vestigial SideBand (VSB) Modulation
Staggered QAM
Relationship Between VSB and SQAM
Homework 6: Chapter 5, Problems 18(20 points), 19(20 points), 23(20 points), 24(20 points), 25(20 points).
Homweork 6 Matlab codes: here.
Homework 6 solutions: here.
Chapter 5:
Differential Encoding and Decoding
Baseband Equivalent of a Passband Channel
Channel Impact and Equalization
Homework 6
Exercise Midterm 2
Chapter 5 Questions (here)
Chapter 6
Motivations
Nyquist Criterion for ISI Free Data Transmission (revisited)
Extension of Nyquist Criterion to TimeFrequency Plane
Multicarrier Technique: the general concepts
Filtered Multitone (FMT) and Filter Bank Multicarrier (FBMC)
Homework 7: Chapter 6, Problems 1(10 points), 2(10 points), 3(10 points), 4(10 points), 5(30 points), 6(10 points), 7(20 points).
Chapter 6
Orthongonal Frequency Division Multiplexing (OFDM)
Chapter 6
OFDM in Practice
Homework 7
OFDM Project
Chapter 7
System Model
BER Performance of ASK Systems
BER Performance of QAM Systems
Homework 8: Chapter 7, Problems 17(40 points), 18(10 points), 19(20 points), 20(10 points), and 21(20 points).
Chapter 7
7.4 BER Performance of PSK Systems
7.5 BER Performance of Differentially Encoded PSK Systems
7.6 Channel Capacity
Chapter 7
7.6 Channel Capacity
Homework 8
Chapter 10
The Measure of Information
The Source Coding Theorem
Huffman Coding
Chapter 10
Huffman Coding
Speech Coding (Linear Predictive Coding)
Exercise Final Exam: here
Chapter 10
Speech Coding (Waveform Coding)
Homework 9
Exercise Final Exam (Solutions)
