FACULTY

APPLIED TECHNOLOGIES

DEPARTMENT

AIRCRAFT TECHNOLOGY ENGINEERING

LEVEL OF STUDIES

UNDERGRADUATE

MODULE CODE

AE2130T

SEMESTER OF STUDIES

3^RD

MODULE TITLE

TELECOMMUNICATIONS

INDEPENDENT TEACHING ACTIVITIES

TEACHING HOURS PER WEEK

CREDIT UNITS

Lectures

3

4

Practice

2

2

COURSE TYPE

Specialty course

PRE-REQUIRED COURSES:

TEACHING AND EXAMINATION LANGUAGE:

GREEK

THE COURSE IS OFFERED TO ERASMUS STUDENTS

COURSE WEBSITE  (URL)

http://ahatzi.teiste.gr/?page_id=10

Learning Objectives

The course material aims at helping students understand and familiarize themselves with the basic concepts of the module of Telecommunicatons, given it is their first contact with the specific field. First, the basic signals and telecommunication systems are analyzed and classified according to their basic characteristics, in the time domain using Fourier series and in the  frequency domain using Fourier transformations.  Then, there is a broad presentation of the basic modulation and demodulation systems regarding  amplitude and frequency and noise effect. Later we develop topics such as time and frequency multiplexing. Finally, attention is paid to the basic principles of signal convertion from analog to digital form and the digital modulation techniques.

After successfully completing the course, students should be able to :

·                     Describe and distinguish the basic telecommunication signals and systems

·                     Understand the principles and the basic features/parameters of modulation systems.

·                     Understand the basic characteristics of signal convertion systems from analog to digital

·                     Apply their knowledge in order to carry out basic design calculations for modulation devices

·                     Analyze, compose design solutions and evaluate comparatively the optimum modulation device according to the coupling requirements

·                     Work individually or collaborate in a team for the solution of realistic problems arising in the  field of telecommunication systems

General Skills

·                     Search, analysis and combination of data and information through the use of the necessary technologies

·                     Independent work

·                     Team work

·                     Generation of new research ideas

Unit 1: Logarithm applications in telecommunications  (gain, losses, definition dB, dBm, applications)

 Unit 2: Representation of signals and systems

Distinction between analog and digital signals, periodic-aperiodic and energy-power signals, Dirac Δ function and  step function, continuous and discrete time systems, analysis of linear systems time invariant, lowpass-bandpass-highpass filters

Unit 3: Time response , Frequency response, Fourier series of periodic signal, Continuous-time Fourier Transformation, spectrum, spectrum density, properties and applications of Fourier transformation 

Unit 4: Introduction to modulation (base band signals, frequency displacement)

Unit 5: Amplitude modulation I

 Modulation and Demodulation AM, signal generation AM 

Unit 6: Amplitude modulation II

 Modulation and demodulation of single and double sideband, Modulation and demodulation of residual sideband

Unit 7: Angle modulation I  

Modulation and demodulation of spectrum and frequency

Unit 8: Angle modulation II

Narrow band Frequency modulation, Broadband frequency modulation,  band amplitude in FM signal, Signal FM generation, Linear filter response to FM signal

Unit 9: Noise in analog modulation devices

             SNR for homodyne SSB signal reception, Noise in AM systems  using envelope detection, noise in FM reception, threshold phenomenon, FM threshold reduction

Unit 10: Access techniques

Time multiplex, frequency multiplex, Time-frequency multiplex, Operation-application-identification of multiplexer and demultiplexer circuits 

Unit 11: Data convertion

Sampling theorem , quantization, encoding, Pulse code, PCM modulation

Unit 12: Modulation ASK – FSK – PSK

ΤEACHING METHOD

Face to face , in the classroom

USE OF INFORMATION AND COMMUNICATION TECHNOLOGIES

·                     Special software of virtual modulation

·                     Learning support through the use of e-class platform

·                     Use of Internet

TEACHING ORGANIZATION

STUDENT EVALUATION

Examinations take place after the completion of lectures and include written examination on the material taught. Examinations are carried out in Greek, without the use of any tutor’s notes and include:

•    Multiple choice questions or short answer questions 

•    Problem solving regarding signal analysis in time and frequency field, as well as modulation techiniques 

-Suggested Bibliography :

    Βιβλίο [32998396]: Συστήματα Επικοινωνίας Αεροσκαφών, Χατζηευφραιμίδης Αντώνης

    Βιβλίο [18548860]: Αρχές τηλεπικοινωνιακών συστήματων, Taub Herbert, Schilling Donald L

    Βιβλίο [41963451]: Συστήματα Επικοινωνίας, Simon Haykin, Michael Moher

    Βιβλίο [1638]: Τηλεπικοινωνίες, Νασιόπουλος Αθανάσιος

-Συναφή επιστημονικά περιοδικά: