Fundamentals of Communications

Lecturer:

Tutor:

Supervisor:

Department of Radioelectronics

Synopsis:

Basics of communication, channel schema and capacity. Transmission environment. Wire communication. Transmission by high- and low-voltage lines and nets. Radio communication. Analog and digital modulations. AM and FM broadcasting, stereo-broadcasting. TV principles and standards. Digital audio and video broadcasting. Circuit concepts and properties for radio transmitters and receivers. Mobile communications.

Requirements:

Syllabus of lectures:

1. Communication basics, channel general schema and capacity. Communication chain

2. Analog modulation I: amplitude and frequency (spectra, energetic and noise parameters)

3. Analog modulation II: phase. Base-band pulse modulation, PCM

4. Pulse modulation on carriers: ASK, FSK (MSK), PSK, QAM (spectra, constel. diagram)

5. Passive and active elements of radioelectronic devices, their properties. RF amplifiers

6. Radio devices blocks: oscillators, mixers, modulators a demodulators, phase lock loop

7. Concepts and properties of radio transmitters and receivers

8. Analog (NTSC, PAL, SECAM) and digital (MPEG, OFDM) TV

9. Mobile communication systems, principles of radio positioning and navigation

10. Wire transmission, metallic symmetrical and coaxial transmission lines, optical fibers

11. Signal transmission by branched non-homogenous lines, multiple line access

12. Local and long-distance data networks - rings, packets; transmission security methods

13. Transmission by heavy-current nets, transmission by non-branched VHV and HV lines

14. Transmission by branched nets for HDO purposes, local transmissions (PDSL)

Syllabus of tutorials:

1. Explanation and demonstration of first three laboratory measurements

2. Task 1: parameters of radio receiver (mirror frequency suppression, selectivity, sensitivity)

3. Task 2: properties and parameters of stereo encoder

4. Task 3: signal transmission by optoelectronic line (Shannon-Kotelnik theorem, converters)

5. Explanation and demonstration of second three laboratory measurements

6. Task 4: operational point, input and output impedances, transfer functions of A-class amplifier

7. Task 5: transmission of AM signal in controlled A, AB, B, C class resonance amplifier

8. Task 6.: measurement of radio transmitters with digital modulations

9. Measurement evaluation and assignment of theoretical examples to examination

10. Introduction to measurement cycle. Basic quantities to measure analog/digital messages

11. Creating data ring by modems, diagnostics of I2 and I1 interface, error measurement

12. Setting ISDN participant applications for using in dispatcher operation

13. Modeling the system HDO and diagnostics of control signals in real system

14. Measurement and adjustment of system for local transmissions using low-voltage net

Study Objective:

Study materials:

Misra, D.K. Radio-frequency and microwave communication circuits.

Toronto: John Wiley. 2001

Note:

Further information:

No time-table has been prepared for this course

The course is a part of the following study plans:

• Heavy-current Engineering- structured studies (compulsory elective course)