Course detail

Communication Systems 1

FEKT-BKC-KS1Acad. year: 2021/2022

In the first part of the course, students become familiar with architecture of common analog and digital communication systems (block diagram, basic functions). Then, the building blocks operation and methods of signal processing (source coding, encryption, channel coding, equalization, modulation, synchronization, etc.) will be described in detail and examples of the building blocks application in current communication systems will be given. In the next part of the course, methods of sharing of communications resources (multiple access, frequency spectrum allocation, methods of signal transmission) will be presented and the principle of spread spectrum and OFDM systems will be explained. At the end, the effects of the transmission environment on signal propagation and methods of their elimination (fading, Doppler effect, diversity) will be described.

Language of instruction

Czech

Number of ECTS credits

7

Mode of study

Not applicable.

Guarantor

prof. Ing. Aleš Prokeš, Ph.D.

Department

Department of Radio Electronics (UREL)

Learning outcomes of the course unit

The graduate is able:
1. describe architecture of common analog, and digital communication systems,
2. explain basic building blocks operation,
3. apply some algorithms of signal processing,
4. explain the effects of the transmission environment and methods of sharing of communications resources,
5. orientate oneself in the use of partial building blocks in current communication systems.

Prerequisites

Fundamentals of signal processing and electronics are required.

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods depend on the type of course unit as specified in the article 7 of BUT Rules for Studies and Examinations. Methods include lectures, laboratory exercises and numerical exercises. Course is taking advantage of e-learning (Moodle) system.

Assesment methods and criteria linked to learning outcomes

Students can obtain 30 points for the activity in laboratory and numerical exercises. The final exam is awarded by 70 points (maximally).

Course curriculum

1. History, subdivision and common architecture of communication systems.
2. Source coding of speech, audio, video and digital data.
3. Cryptography. Conventional encryption. Public key encryption.
4. Channel coding. Linear codes. Hamming and cyclic codes.
5. Convolutional codes. LDPC codes. Introduction to turbo-codes. Concatenated codes.
6. Baseband modulation and demodulation. Line codes.
7. Signal detection in noise. Matched filter. Inter-symbol interference. Equalization.
8. Band-pass modulation. Analog modulation. Modulators and demodulators.
9. Digital modulation. Modulators and demodulators.
10. Carrier frequency and phase synchronization. Symbol and frame synchronization.
11. Multiple access systems. Multiplexing techniques. Spread spectrum systems.
12. OFDM Technology. Termination devices of communication systems. Transmitters and receivers.
13. Communication channel. Fading. Doppler effect. Diversity receiving systems.

Work placements

Not applicable.

Aims

The aim of the course is to acquaint students with the concept and common architecture of analogue and digital communication systems, with their basic building blocks operation and with the used methods of signal processing, explain the effects of the transmission environment and methods of sharing of communications resources, show examples of the use of partial building blocks in current communication systems.

Specification of controlled education, way of implementation and compensation for absences

Evaluation of activities is specified by a regulation, which is issued by the lecturer responsible for the course annually.

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

PROKEŠ, A. Komunikační systémy. Přednášky. Komunikační systémy. FEKT VUT Brno, Ústav radioelektroniky.: 2011. (CS)
SKLAR, B. Digital Communications: Fundamental and Applications, 3rd Edition. Pearson, 2020 (CS)
ŠEBESTA, V. Teorie sdělování. Skriptum FEI VUT v Brně, Vutium, 1998 (CS)
ŽALUD, V. Moderní radioelektronika. Praha, BEN, 2000 (CS)

Recommended reading

Not applicable.

Elearning

eLearning: currently opened course

Classification of course in study plans

  • Programme BKC-EKT Bachelor's 3 year of study, winter semester, compulsory

Type of course unit

 

Lecture

26 hod., optionally

Teacher / Lecturer

prof. Ing. Aleš Prokeš, Ph.D.

Syllabus

Theoretical fundamentals of communications. Theory of information. Channel capacity.
Components of communication systems.
Digital and analogue communication signals. Source coding. Adaptive prediction, Huffman code. Fundamentals of the audio and video compression.
Fundamentals of cryptography. Channel coding. Error correcting and detecting codes, redundancy. Cyclic, Hamming and convolutional codes. Turbo codes.
Baseband pulse transmission. Line coding. Synchronnous and asynchronnous transfer mode.
Passband data transmission. Amplitude and phase modulations.
Fundamentals of digital modulations FSK, ASK, PSK, QAM, MSK. Correlation coding. Matched filter. Carrier and symbol timming recovery.
Multiple-access techniques (FDMA, TDMA, CDMA). OFDM.
Fundamentals of spread-spectrum techniques. FH and DS systems.
Audio and video signal transmission. Telephone network. Radio and TV broadcasting.
Data Transmission. Telephone service, ISDN, AHDL. Wireless systems (trunking systems, WLL systems, point-to-multipoint systems). Terresterial Digital Audio Broadcasting (T-DAB, DVB).
Optical communication systems, modulation techniques.
Satelite communications. Local area networks.
Reliability of communicaton systems. Perspective of communication.

Exercise in computer lab

13 hod., compulsory

Teacher / Lecturer

prof. Ing. Aleš Prokeš, Ph.D.

Laboratory exercise

26 hod., compulsory

Teacher / Lecturer

prof. Ing. Aleš Prokeš, Ph.D.

Syllabus

Spectrum of modulated signals.
Data coding for transmission.
Performances of digital modulated signals.
Data communicaton using modems.
Matched filter.

Elearning

eLearning: currently opened course