Course detail

Wireless Communications

FEKT-MPA-RKOAcad. year: 2022/2023

The course addresses the theoretical apsects of modern radio communication theory. It emphasizes on the comprehension of principles of operation of communication systems. The students significantly improve their knowledge in the area of signal processing applied in communication theory, e.g. the algorithms of signal detection. Students get detailed informations about transmission over radio channel, transmission using the spread spectrum principle, OFDM technique and about MIMO systems. Moreover the students get knowledge on the advanced coding principles - e.g. the turbo and LDPC codes. During the practical computer ecxercises, the students verify the theoretical knowledge using the MATLAB computer simulations.

Language of instruction

English

Number of ECTS credits

Mode of study

Not applicable.

Guarantor

prof. Ing. Roman Maršálek, Ph.D.

Department

Department of Radio Electronics (UREL)

Offered to foreign students

The home faculty only

Learning outcomes of the course unit

The graduate of the course is able to: (a) choose a suitable filter for intersymbol interference reduction; (b) discuss the methods of optimal reception; (c) explain the principles of modulation techniques; (d) create a MATLAB program simulating the principles of digital communication theory; (e) illustrate the structure of OFDM modulator and demodulator; (f) compute the output of the space-time coders.

Prerequisites

The student who registers the course should be able to explain the basic terms from the area of probability and statistics, describe mathematicaly basic analogue and digital modulation techniques, create a simple program in the MATLAB environment, compute the response of linear systems to input, discuss the basic terminology and methods from the signal processing theory

Co-requisites

Not applicable.

Planned learning activities and teaching methods

Teaching methods include lectures and computer laboratories in MATLAB simulation software.

Assesment methods and criteria linked to learning outcomes

up to 15 points for PC-lab homeworks
up to 15 points for numerical homeworks
up to 70 points for final exam (40 points written part, 30 points oral part)
Detailed informations will be specified in the e-learning system

Course curriculum

1. Radio communication system, radio communication signals, complex envelope
2. Deterministic and stochastic acces techniques
3. Detection of radio communication signals, hypothesis testing, AWGN channel
4. Passband modulations, QAM, MPSK, CPFSK
5. Spread spectrum systems - DSSS, FHSS, spreading sequences
6. OFDM - intersymbol interferences, IFFT-based modulation, cyclic prefix and orthogonality
7. Synchronization I - estimation of RF carrier parameters, symbol timing estimation
8. Synchronization II - frame synchronization, network synchronization
9. Channel coding I - block coding, Hamming and cyclic codes, RS, LDPC
10. Channel coding II - convolutional and Turbo codes, interleaving
11. Multi antenna techniques - MIMO, beamforming
12. Examples of commercial satcom systems - Inmarsat, Intelsat, Starlink
13. Examples of communication systems for space missions

Work placements

Not applicable.

Aims

The aim of the course is to make students familiar with the wireless communication link, representation of information, signal detection, methods of intersymbol interference supression, advanced coding techniques including Turbo and LDPC, radio channel characteristics, digital keying, synchronization techniques and with properties of OFDM, CDMA and MIMO techniques in communications.

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

the computer in-class excercises are compulsory

Recommended optional programme components

Not applicable.

Prerequisites and corequisites

Not applicable.

Basic literature

PROAKIS, John G. Digital communications. 5th ed. Boston: McGraw-Hill, 2008, xviii, 1150 s. ISBN 978-0-07-295716-7. (EN)
HAYKIN, S., Digital Communication Systems, ISBN 978-0471647355 (EN)
PROAKIS, J. Fundamentals of Communication Systems (2nd Edition), ISBN 978-1292015682 (EN)

Type of course unit

Lecture

26 hours, optionally

Teacher / Lecturer

prof. Ing. Roman Maršálek, Ph.D.

Syllabus

1. Radio communication system, radio communication signals, complex envelope.
2. Channel capacity, information theory.
3. Detection of radio communication signals, hypothesis testing, AWGN channel.
4. Application of detection theory in radio communications.
5. Spread spectrum systems I - DSSS, FHSS, spreading sequences.
6. Spread spectrum systems I - rake receiver, synchronization.
7. Communication channel characteristics, equalizers, nonlinear channels.
8. UWB communications.
9. OFDM - principle, modulation using IFFT, cyclic prefix and orthogonality, applications in IEEE 802.11a,g. UW-OFDM and SC-FDMA, application in LTE.
10. Synchronization and equalization in OFDM, MB-OFDM and MC-CDMA systems.
11. MIMO systems, space time coding, singular decomposition, Alamouti code, TCM.
12. Trends in communications - massive MIMO, FBMC.
13. Radio transceiver imperfections and their modeling - IQ imbalances, nonlinearities, phase noise.

Fundamentals seminar

13 hours, compulsory

Teacher / Lecturer

Malek Ali

Exercise in computer lab

13 hours, compulsory

Teacher / Lecturer

Malek Ali

Syllabus

1. Complex envelope.
2. ISI.
3. Optimal receiver.
4. Synchronization.
5. CDMA.
6. OFDM - principle.
7. Radio channel.
8. RF chain.
9. OFDM II - influnce of RF parameters.
10. UWB principles.
11. Coding.
12. FBMC modem.

eLearning

eLearning: currently opened course

VUT

Faculties

University Institutes

Parts

Wireless Communications

Type of course unit