Telecommunication Systems


Educational goals

The main objective of the course is to introduce the basic principles of modern telecommunication systems, to analyze the operation and the basic components of such systems and to offer the students the means to deal with pertinent applications. By the successful completion of the course the student should be able to:

  • Describe the the operation and the basic components of telecommunication systems.
  • Explain and compare the techniques for source encoding.
  • Calculate the fundamental parameters of a transmission line (input impedance, reflection coefficient, VSWR etc.).
  • Decide whether the load of the transmission line is matched or not, compare the matching networks propose the most appropriate network for a specific apllication.
  • Calculate and assess the quality parameters of telecommunication systems.
  • Explain the impact of noise and calculate the signal to noise ratio and the probability of error of telecommunication systems.
  • Explain, compare and evaluate the methods for error control and correction.
General Skills
  • Search, analysis and synthesis of information by using the appropriate means and technology.
  • Desicion making.
  • Independent and cooperative work.
  • Respect to the natural environment.
  • Criticism and self-criticism ability.
  • Free, creative and inductive thinking.

Course Contents

Introduction to telecommunication systems: Structure, operation and quality criteria.

Review of signal analysis in the  frequency domain. Signal spectrum an bandwisth, power spectral density, spectral efficiency.

Principles of sampling and analog to digital conversion.

Information theory and source coding: Measure of information, basic source coding techniques, Huffman coding, voice coding, JPEG, MPEG.

Transmission: Transmission lines (TLs), the differential equation of the uniform TL, time domain and frequency domain, lossless TL, characteristic impedance, reflection coefficient and matching, standing wave patterns, standing wave ratio, matching networks. Types of TLs. Basic principles of wireless transmission.

Digital transmission and noise: Line coding. Additive white Gaussian noise analysis, signal-to-noise ratio and noise figure. Maximum aposteriori detector and error probability. Intersymbol interference and pulse shaping. Baseband MPAM, eye diagram. Shannon channel capacity theorem.

Error control: ARQ, Forward Error Correction (FEC) coding and decoding. Basic block, convolutional, turbo and LDPC codes. Performance of codes. Interleaving.

Teaching Methods - Evaluation

Teaching Method
  • Lectures in the classroom.
Use of ICT means
  • Power point presentations.
  • Moodle.
  • Tools for simulation of telecommunication systems.
  • Electronic communication with students.
Teaching Organization
Activity Semester workload
Exercises with simulation software38
Literature analysis, individual study and problem solving90
Total 180
Students evaluation

Α. Intermediate examination (IΕ) (40%)
- Multiple choice questions.
- Questions with short answers.

Β. Final written examination (FΕ) (60%)
- Problem solving and calculations.
- Comparative evaluation of various systems/situations relative to wireless communications.

The final score (FS) of the course should be at least five (5). It is calculated by FS = FΕ*0,7+ IΕ*0,3 when IE is not less than 5. Otherwise FS = FE.

The evaluation criteria are listed in the webpage of the course and are explained to the students in the classroom.

Recommended Bibliography

Recommended Bibliography through "Eudoxus"
  1. (Ελληνικά) B. Sklar, "Ψηφιακές Επικοινωνίες", Εκδόσεις Α. Παπασωτηρίου & Σια ΟΕ, 2η εκδ., 2011, ISBN: 978-960-491-019-9.
  2. B.P. Lathi, Zhi Ding, "Σύγχρονες Αναλογικές και Ψηφιακές Επικοινωνίες", Εκδόσεις Τζιόλα και Υιοί ΑΕ, 4η έκδ., 2018., ISBN: 978-960-418-737-9, Κωδικός Βιβλίου στον Εύδοξο: 59421499.
  3. A. Bateman, «Ψηφιακές Επικοινωνίες», Εκδόσεις Τζιόλα και Υιοί ΑΕ, 2000, ISBN: 978-960-8050-03-7, Κωδικός Βιβλίου στον Εύδοξο: 18548676.
Complementary greek bibliography
  1. (Ελληνικά) Π.Γ. Κωττής, "Εισαγωγή στις Τηλεπικοινωνίες", Εκδόσεις Τζιόλα και Υιοί ΑΕ, 2011, ISBN: 978-960-418-362-3.
  2. J.G. Proakis, M. Salehi, "Συστήματα Τηλεπικοινωνιών", Εκδόσεις Γ.Χ. Φούντα, 2η έκδ., 2015, ISBN: 9789603307631.
  3. Γ. Ευθύμογλου, "Προσομοίωση και Επίδοση Τηλεπικοινωνιακών Συστημάτων", Σύνδεσμος Ελληνικών Ακαδημαϊκών Βιβλιοθηκών (, 2015, ISBN: 978-960-603-062-8.
  4. Ν. Μήτρου, "Ψηφιακές Επικοινωνίες: Συνοπτική Θεωρία και Εργαστήριο", Σύνδεσμος Ελληνικών Ακαδημαϊκών Βιβλιοθηκών (, 2015, ISBN: 978-960-603-299-8.
  5. Γ.Κ. Μαργκάς και Α.Σ. Πακτίτης, "Γραμμές Μεταφοράς Υψηλών Συχνοτήτων", Εκδόσεις Στέλλα Παρίκου & ΣΙΑ Ο.Ε., 2006, (2η έκδοση) ISBN: 978-960-405-858-7.
Complementary international bibliography
  1. K. Wesolowski, “Introduction to Digital Communication Systems”, John Wiley & Sons Ltd., 2009, ISBN: 978-0-470-69519-7.
  2. J.G. Proakis, M. Salehi, “Digital Communications”, McGraw-Hill, 5th ed., 2008, ISBN 978–0–07–295716–7
  3. F.T. Ulaby, U. Ravaioli, “Fundamentals of Applied Electromagnetics”, Pearson, 7th ed. 2015, ISBN: 9780133357035.
Scientific journals
  1. ΙΕΕΕ Communications Magazine
  2. IEEE Transactions on Communications
  3. IEEE Communications Surveys and Tutorials
  4. IEEE Transactions on Information Theory
  5. IEEE Transactions on Communications