Principles of Telecommunications 2
Keywords |
Classification |
Keyword |
OFICIAL |
Telecommunications |
Instance: 2006/2007 - 2S
Cycles of Study/Courses
Teaching language
Portuguese
Objectives
To grasp the fundamentals of digital modulations and spread spectrum techniques.
In the end of the semester the student should, at least, be able to understand the operation of modulation-based communication systems, choose adequate detection methods and compute error probabilities. The student should then also be familiar with direct sequence and frequency hopping spread spectrum techniques and be knowledgeable enough about the properties of the most common spreading codes.
Program
Topic 1: Bandpass transmission (digital modulations):
binary digital modulation techniques(PSK, FSK, ASK); coherent and noncoherent detection of PSK and FSK signals; DPSK; error probability in binary digital modulations; nonbinary digital modulations (MPSK, MFSK and QAM); symbol and bit error probabilities in MPSK, MFSK and QAM; spectral efficiency; synchronization techniques: carrier phase and timing recovery.
Topic 2: Spread Spectrum:
introduction and generic considerations; spread spectrum techniques: direct sequence (DS) and frequency hopping (FH); effects of jamming; Walsh, Barker and pseudo-random sequences (PN, Gold and Kasami sequences); multiple access (CDMA).
Mandatory literature
Sílvio A. Abrantes; Apontamentos de Espalhamento Espectral
Sílvio A. Abrantes; Apontamentos de Telecomunicações 2, 2004
Haykin, Simon;
Communication systems. ISBN: 0-471-17869-1
Complementary Bibliography
Sklar, Bernard;
Digital Communications. ISBN: 0-13-084788-7
Peterson, Roger L.;
Introduction to spread-spectrum communications. ISBN: 0-02-431623-7
Teaching methods and learning activities
- theory is presented in lecture classes;
- exercise solving and interaction with the teacher occur in theoretical-practical classes; students will be given a set of exercises to be solved in class and at home.
- Matlab/Simulink simulation work will be developed in 2-hour lab classes.
keywords
Technological sciences > Engineering > Communication engineering > Telecommunications engineering
Evaluation Type
Distributed evaluation without final exam
Assessment Components
Description |
Type |
Time (hours) |
Weight (%) |
End date |
Subject Classes |
Participação presencial |
56,00 |
|
|
Exams |
Exame |
3,00 |
|
2007-06-05 |
Lab work preparation |
Trabalho escrito |
14,00 |
|
|
|
Total: |
- |
0,00 |
|
Amount of time allocated to each course unit
Description |
Type |
Time (hours) |
End date |
|
Estudo autónomo |
49 |
2007-06-01 |
Studying for exams |
Estudo autónomo |
16 |
2007-06-05 |
|
Total: |
65,00 |
|
Eligibility for exams
Not to be absent more than the allowed number of times stated in "Normas de Avaliação".
Calculation formula of final grade
CF=0,35 x (MT1+MT2) + 0,3xAC
CF - final grade
MT1 and MT2 - mini-test grade
AC - continuous evaluation grade.
Continuous evaluation is accomplished during Lab Classes and is based on the student's performance on Lab work and reports.
To pass the course the average mini-test grade may not be lower than 35% of total grade (7 in 20).
Special assessment (TE, DA, ...)
Oral or written exam. Lab grade is not taken into consideration.
Classification improvement
Oral or written exam. Lab grade is not taken into consideration.
Observations
The following students are not required to attend class: military, working students or equivalent and those who have attained frequency in the preceding academic year.