Digital Communications 1

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

In the course, students will get acquainted with basic aspects of the system design and analysis of a digital communication system. The course concentrates on generally coded digital modulation definitions, analysis of spectral properties, and analysis of the communication channel influence. A detailed design of optimal and suboptimal detector is also addressed including the detector error performance. The channel coding, channel sharing and synchronization and equalization are introduced on the basic level. A more detailed approach to these topics is subject of more specialized courses EX37DK2 and EX37SEK. The seminars are focused on the practical design, simulation and performance verification of basic subsystems.

Requirements:

Syllabus of lectures:

1. Prostředky CAD návrhu a simulace dig. kom. systémů.

2. Obecná definice (kódované) digitální modulace, klasifikace modulací, základní vlastnosti.

3. Definice dig. modulací - lineární/nelineární, bez paměti (PSK, QAM, FSK,...).

4. Definice dig. modulací - lineární/nelineární, s pamětí (TCM, CPFSK, CPM, GMSK,....).

5. Definice dig. modulací - časo-prostorové, adaptivní, multidim. data (STM, OFDM, MCM,...).

6. Digitalní modulace s impulsními nosnými signály - Ultra-WideBand. Sdílení komunikačního kanálu (CDMA, FDMA, TDMA, SDMA).

7. Základy kanálového kódování. Blokové a konvoluční kódy.

8. Spektrální vlastnosti dig. modulací.

9. Komunikační kanál lin./nelin., s AWGN, s únikem a mnohocestným šířením, prostorově diverzitní.

10. Detekce (kódovaných) digitálních modulací. Kritérium optimality.

11. Struktury detektorů - korelační detektor, detektor v signálovém prostoru.

12. Detekce modulací a kódů s pamětí, Viterbiho algoritmus. Suboptimální detektory.

13. Základní principy synchronizace a ekvalizace.

14. Vlastnosti detektorů (chybovost detekce, ISI).

Syllabus of tutorials:

1. CAD tools for digital communication systems design and simulation

2. Design and simulation of linear modulator

3. Design and simulation of nonlinear modulator

4. Spectral properties of digital modulations

5. Communication channel models

6. Design and simulation of linear modulation detector

7. Viterbi algorithm

Study Objective:

Study materials:

1. Proakis, J.G. Digital Communications. McGraw-Hill. 1995

2. Benedetto, S., Biglieri, E., Castellani, V. Digital Transmission Theory. Prentice-Hall. 1987

3. Simon, M.K., Hinedi, S.M., Lindesy, W.C. Digital Communication Techniques-Signal Design and Detection. Prentice-Hall. 1995

4. Oppermann I., Hamalainen M., Iinatti J.: UWB theory and applications, John Wiley & Sons, 2004

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Telecommunications and Radio-engineering - High-frequency and Microwave Technology- structured studi (compulsory elective course)
• Telecommunications and Radio-engineering - Opto-electric Systems- structured studies (compulsory elective course)
• Telecommunications and Radio-engineering - Radio Communications, Navigation and Radar Systems- struc (compulsory course)
• Telecommunications and Radio-engineering - Multimedia, Sound and Television Technology- structured s (compulsory elective course)
• Telecommunications and Radio-engineering - Telecommunications- structured studies (compulsory elective course)