Evaluation and Grading
Students will have two midterm exams and a final exam.
The exams will be written.
Grade = 0.25 x Midterm I + 0.25 x Midterm II + 0.5 x Final
EEE 483 Analog Communication Systems (3+2) - Fall 2016-2017
Analog Communications - Contents:
- Hilbert
Transform. Pre-envolope. Complex Envelope. Band Pass Signals and
Systems.
- Frequency Translation. Amplitude Modulation.
- Frequency Modulation. FM Stereo.
- Phase Locked Loop.
- Frequency Division Multiplexing.
- Superheterodyne Receiver.
Fall Semester 2014-2015
LABORATORY STUDY (Dec. 05, 2014)
- Impliment the transistor
AM modulator given in the links. Choose the carrier frequency (V2) =
1000 Hz and the message sūgnal frequency (V1) = 10 Hz. The transistor
amplifier should be class C (or B) type amplifier. And the band pass
filter input resistance should be at least ten times greater than the
collector resistance. This is required not to load and change the
characteristics of the transistor circuit.
cir2.jpg and
fig1.gif . Local copy:
cir2.jpg and
fig1.gif
Example:
ammod.pdf
Colletor output
Band pass filter output
- Do the spice simulation of the AM circuit provided in the
lab document:
8-Modulation.pdf.
Local copy: 8-Modulation.pdf
- Ivestigate AM modulation by block diagram implementation
in Matlab. See the followink links
Academic_Fig2.png
and amplitude-modulation.
Local copy: Academic_Fig2.png
and amplitude-modulation
Computer Experiments
Basic Matlab programming exercices.
- EEE483COMPEXP1.m
- EEE483COMPEXP2.m
- EEE483COMPEXP3.m
EEE 492 Digital Communication Systems (3+2) - Spring
2017-2018
A communication system simply transfers a message from one
point (source) to another (sink) through a communication channel.
Analog communication systems evolved to digital communication systems
in parallel to the development of digital circuit and systems. Digital
circuits and systems have widespread applications, since they are easy
to implement and relatively cheap when compared to analog systems.
In this course we are going to learn analog to digital conversion,
digital modulation methods, time division multiplexing, concept of
information and information measure, digital communication channel
limitations; channel noise, interference, etc.
Digital Communications - Contents:
Analog pulse modulation:
pulse amplitude modulation, flat-top amplitude modulation, pulse
position modulation, pulse width modulation. Analog to digital
conversion: sampling, Nyquist rate, quantization, encoding. Nyquist
rate. Base band digital transmission: pulse code modulation, delta
modulation, differential pulse code modulation. Time division
multiplexing. M-ary coding, symbol rate, bit rate, inter symbol
interference. Nyquist rate, Nyquist channel. Matched filter.
Correlative coding. Pass band digital transmission: amplitude shift
keying, frequency and phase shift keying. Signal expansion with
orthogonal basis (signals), signal vectors. Detection of signals in
noise.
Spring Semester 2015-2016
SOME LINKS AND DOCUMENTS FOR PWM/PPM AND ADC CIRCUITS
Grades
Spring Semester 2017-2018
Midterm
Exam Questions and Answers
Grades
Content of final exam
- Differential pulse code modulation.
- Analog to digital conversion / PCM
- Encoding / Sgnalling (NRZ, ON-OFF, etc.)
- Correlative level coding (duo-binary coding, etc.)
Spice Simulations: - Voltage Divider - vd.cir
- AC Voltage Divider - vdac.cir
- RC Circuit - rc.cir
- Passive Bandpass Filter - bandpass.cir
- Tuned Circuit - tunedcircuit.cir
- Common Emitter Transistor Amplifier - trce.cir
- AM Signal Generator - amgen.cir
- Switching Modulator - switchmod.cir
- Envelope Detector - envdetector.cir
- Bipolar Chopper - bpchopper.cir
- Voltage Controlled Oscillator Emulation - vcoe.cir
- Sample and Hold Circuit - sampling.cir
- Pulse Width Modulation - pwm.cir
