AIMS AND CONTENT

LEARNING OUTCOMES

The course will provide the bases of techniques for transmitting signals and for protecting data in digital communications. Specifically, band-pass modulations and linear block codes, as well as basics of Pulse Code Modulation. The aim is to furnish an adequate knowledge to understand the main components to improve the reliability of modern digital telecommunication system.

AIMS AND LEARNING OUTCOMES

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

- understand the main elements of a digital communication system;

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

- understand the basics of information theory;

- appreciate its practical applications in channel coding;

- learn the most used techniques to digitally transmit analog signals.

TEACHING METHODS

Traditional lectures (50 hours) in attendance.

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

SYLLABUS/CONTENT

- Scheme of a digital communication system. Digital transmission over band-pass channels;

- Digital transmission over bandpass channels: OOK, ASK, FSK, CPFSK, PSK and their power spectra. Noise equivalent bandwidth.

- Synthesis of modulators by means of QAM systems;

- Coherent reception for binary systems: optimal receivers for OOK, FSK, PRK;

- Noncoherent OOK, FSK, DPSK receivers: performance (error probability) evaluation;

- Bandpass M-ary QAM, APK and PSK receivers, performance evaluation. Link budget in digital transmission;

- Basic concepts of Information Theory and source coding;

- Channel coding: basic concepts, parity check codes;

- Digital transmission of analog signals: Pulse code modulation (PCM and DPCM), Delta modulation (DM).

RECOMMENDED READING/BIBLIOGRAPHY

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

Handouts by the teacher, i.e. notes specifically devoted to all the topics covered during the course, including relevant comments, examples, basic exercises.

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

TEACHERS AND EXAM BOARD

LESSONS

Class schedule

The timetable for this course is available here: Portale EasyAcademy

EXAMS

EXAM DESCRIPTION

Written + oral

ASSESSMENT METHODS

The written exam is aimed at assessing the basic concepts and applications of band-pass digital modulations, of channel coding techniques, and of PCM.

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).