DIGITAL COMMUNICATIONS
Stampa
Enrollment year
2019/2020
Academic year
2019/2020
Regulations
DM270
Academic discipline
ING-INF/03 (TELECOMMUNICATIONS)
Department
DEPARTMENT OF ELECTRICAL,COMPUTER AND BIOMEDICAL ENGINEERING
Course
ELECTRONIC ENGINEERING
Curriculum
Space Communication and Sensing
Year of study
Period
2nd semester (02/03/2020 - 12/06/2020)
ECTS
6
Lesson hours
46 lesson hours
Language
English
Activity type
ORAL TEST
Teacher
GAMBA PAOLO ETTORE (titolare) - 4 ECTS
MARINONI ANDREA - 2 ECTS
Prerequisites
The course is aimed at students with a basic knowledge of electrical communication and signal theory
Learning outcomes
The student will learn some of the advanced techniques for digital transmission and coding of the information. Accordingly, he/she will be able to design the basic elements of a modern digital communication system, explaining the rational behind his/her choices.
Course contents
The course is for students with a basic knowledge of transmission techniques and is devoted to digital communications.

Course introductory notes.
Stochastic variables and processes

Information Theory: entropy.
Information Theory: source coding.
Channel capacity.

Coding techniques for information protection
Codes for error detection and correction
Algebraic codes
Convolutional codes, maximum likelihood decoding, Viterbi algorithm
Concatenated codes
Turbo codes
LDPC codes

Transmission on AWGN channels
Digital signals: PSD and power
Nyquist criterion to avoid intersymbol interference (ISI)
Optimum decoder
Upper and Lower bounds for BER values

Channels with fading
Fading definition and effects
Diversity techniques
Linear equalizers: Zero Forcing Equalizers
Linear equalizers: LMS, fractional and Decision Feedback equalizers. Introduction to ML equalizers.

Synchronization and syntonization
Frequency error estimates (open-loop and closed-loop)
Phase error estimates (open-loop and closed-loop)
Timing error estimates (open-loop and closed-loop)

OFDM modulation (introduction)
Teaching methods
Lectures (hours/year in lecture theatre): 45
Practical classes (hours/year in lecture theatre): 0
Workshops (hours/year in the lab): 0

The concepts are introduced by means of lectures with slides integrated with explanation at the blackboard. Complementary topics are presented by means of one or two seminars by company representatives introducing examples of real digital communication systems
Reccomended or required readings
J.R. Barry, E.A. Lee, D.G. Messerschmitt. Digital Communication (third edition). Springer 2004
Assessment methods
Oral test, with questions aiming at understanding which are the concepts acquired by the student and his/her ability to explain how the functional blocks of digital systems work. The minimum score to pass the exam is 18, the top one is 30 cum laude.
Further information
Oral test, with questions aiming at understanding which are the concepts acquired by the student and his/her ability to explain how the functional blocks of digital systems work. The minimum score to pass the exam is 18, the top one is 30 cum laude.
Sustainable development goals - Agenda 2030