Mobile Communications

Course Description

Basic characteristics of wireless systems are described, with an emphasis on mobile systems. The phenomena in the wireless channel and methods of suppressing the influence of the channel on the reliability of communication are studied. A cellular planning overview and the basics of MIMO technology are given. The most important mobile systems are presented, with a more detailed look on features of 5G network.

Learning Outcomes

  1. Explain the basic features of a wireless channel and equalization techniques.
  2. Explain the main characteristics of mobile systems from different generations.
  3. Evaluate correctness of cellular planning.
  4. Explain the basics of MIMO technology.
  5. Recognize the main features of 5G network.

Forms of Teaching

Lectures

Lectures are conducted with the help of power-point presentations with explanations on the board. Lectures are available online in electronic form.

Exercises

Solving numerical examples.

Independent assignments

During the semester, projects from the course area are planned. More complex tasks would be solved, most often with the use of software tools. Each project would be handled by smaller group of students.

Laboratory

Laboratory exercises are planned during the course. At the end of each exercise, the activity and understanding would be check.

Grading Method

Continuous Assessment Exam
Type Threshold Percent of Grade Threshold Percent of Grade
Laboratory Exercises 0 % 10 % 0 % 10 %
Homeworks 0 % 5 % 0 % 5 %
Mid Term Exam: Written 0 % 30 % 0 %
Final Exam: Written 0 % 35 %
Final Exam: Oral 20 %
Exam: Written 0 % 65 %
Exam: Oral 20 %

Week by Week Schedule

  1. General information about communications, wireless communications, basic concepts - two-way transmission, multiple access, frequency, power. Historical development of wireless communications, services and generations of mobile systems.
  2. Antenna systems, electromagnetic wave attenuation in free space, receiver sensitivity, link budget.
  3. Mechanisms of EM wave propagation, reflection and transmission, scattering, diffraction, two-ray model, introduction to fading, Doppler effect, multipath propagation.
  4. Channel filter model, deterministic channel functions, channel impulse response, coherence bandwidth, Doppler dispersion, coherence time. Special cases of wireless channel. Narrowband and broadband systems.
  5. Fading. Diversity.
  6. The bit error rate in the communication channel. Wireless channel models.
  7. Equalization techniques.
  8. Midterm exam
  9. Cellular system basics. Capacity in cellular network, Handover.
  10. Fourth generation mobile systems (4G)
  11. MIMO System model; System capacity. MIMO - Example of realisation in LTE system
  12. Architectures of 4G/5G mobile networks, Protocol architectures of radio acess network (RAN) and core network in 4G/5G systems
  13. Quality of Service (QoS) in 4G/5G networks, Network Function Virtualization in 5G networks
  14. The concept of network slicing, Technologies of wireless interface in 5G networks
  15. Final exam

Study Programmes

University graduate
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Literature

A. F. Molisch (2010.), Wireless Communications, Wiley-IEEE Press
Erik Dahlman, Stefan Parkvall, Johan Skold (2020.), 5G NR, Academic Press
T. S. Rappaport (2002.), Wireless Communicatios, Prentice Hall;
(.), E. Zentner: Antene i radiosustavi, Graphis 2001.,
(.), Svaka literatura koja u naslovu ima ključne riječi: Wireless Communications,
David Tse, Pramod Viswanath (2005.), Fundamentals of Wireless Communication, Cambridge University Press
Andrea Goldsmith, (2005.), Wireless Communications, Cambridge University Press

Exercises

Laboratory exercises

For students

General

ID 222449
  Summer semester
5 ECTS
L1 English Level
L1 e-Learning
45 Lectures
0 Seminar
15 Exercises
12 Laboratory exercises
0 Project laboratory

Grading System

Excellent
Very Good
Good
Sufficient