CODE 114551 2024/2025 5 cfu anno 1 INTERNET AND MULTIMEDIA ENGINEERING 10378 (LM-27) - GENOVA ING-INF/03 English GENOVA 1° Semester Questo insegnamento è un modulo di: AULAWEB

## AIMS AND CONTENT

### LEARNING OUTCOMES

The course is designed to provide a foundational understanding of digital communications. It begins with a review of signal theory, random phenomena, and noise, followed by an in-depth exploration of baseband digital transmissions. Throughout the course, these concepts will be presented, discussed, and compared. The primary objective is to equip students with the essential knowledge required to comprehend and design modern telecommunication systems.

### AIMS AND LEARNING OUTCOMES

Attendance, active participation to lectures, and individual study will allow students

- to know the main characteristics of electric signals and systems, their classifications in time and frequency domain.

- to understand the random phenomena, starting with a review of probability theory, including stochastic processes.

- to appreciate the theoretical and actual advantages deriving from the use of digital systems

- to understand the main elements of a digital communication system;

- to know the main baseband transmission systems and to compare the principal parameters affecting their performance;

### TEACHING METHODS

Traditional lectures (50 hours) in attendance.

Further information will be available on the AulaWeb page devoted to the course.

### SYLLABUS/CONTENT

- General concepts: analog and digital messages.

- Electrical signal properties: voltage, current, power, available power.

- Linear time invariant systems: pulse response, convolution, transfer function.

- Probability: definitions, conditioned probability, Bayes theorem, Bernoulli trial.

- Random variables: definition and properties (mean, variance), probability distribution and density functions.

- Random processes: definition and properties, mean, self-correlation, white noise, power spectrum, Wiener Khinchin theorem, thermal noise

- Scheme of a digital communication system.

- Digital transmission over baseband channels: PAM. Intersymbol interference: Nyquist criterion. PAM power spectrum. Main line codes and their spectra.

- Bit and frame synchronization: basic techniques.

A. B. Carlson, P. B. Crilly, J. C. Rutledge, “Communication Systems”, 4th edition,  Mac Graw Hill, 2002

B. Sklar “Digital Communications: Fundamentals and Applications”, Prentice Hall 2001

Handouts by the teacher.

People who cannot attend the lectures will fruitfully use the handouts and the text books.

## LESSONS

### Class schedule

The timetable for this course is available here: Portale EasyAcademy

## EXAMS

Written + oral

### ASSESSMENT METHODS

The written exam is devoted to assess whether the students have actually learnt  the use random variables, the spectra estimation, the use of constellation, and the evaluation of link budgets.

The oral exam is aimed at evaluting the synthsis, reasoning, and critical capacities of studens on the topics covered by the lectures.

### FURTHER INFORMATION

Students with disabilities or learning disorders are allowed to use specific modalities and supports that will be determined on a case-by-case basis in agreement with the Delegate of the Engineering courses in the Committee for the Inclusion of Students with Disabilities. Students are invited to contact the teacher of this course and copy the Delegate (https://unige.it/commissioni/comitatoperlinclusionedeglistudenticondisabilita.html).