CODICE 104760 ANNO ACCADEMICO 2021/2022 CFU 5 cfu anno 1 INTERNET AND MULTIMEDIA ENGINEERING 10378 (LM-27) - GENOVA SETTORE SCIENTIFICO DISCIPLINARE ING-INF/03 LINGUA Inglese SEDE GENOVA PERIODO 2° Semestre MATERIALE DIDATTICO AULAWEB PRESENTAZIONE A digital communication system conveys information in form of discrite symbols from its source to a destination some distance away. The approach used to face the subject is from a general viewpoint: since all the communication systems have the same basic funtion of transfring information, the course presents the principles and problems of conveying informarmation in terms of digital messages in electrical form through a noisy channel. OBIETTIVI E CONTENUTI OBIETTIVI FORMATIVI The course is aimed at providing the bases of digital communications: the baseband and bandpass transmissions will be presented, discussed, and compared. The goal is to give the students an adequate knowledge needed to understand the key elements for designing and developing modern telecommunication systems. OBIETTIVI FORMATIVI (DETTAGLIO) E RISULTATI DI APPRENDIMENTO Attendance, active participation to lectures, and individual study will allow students - 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; - to know the main bandpass transmission systems and to compare the principal parameters affecting their performance. PREREQUISITI Students are expected to have a reasonable background in signal theory, probability theory, random processes and analog modulations. MODALITA' DIDATTICHE Traditional lectures (50 hours) in attendance except for specific restrictions due to the Covid-19 emergency. Further information will be available on the AulaWeb page devoted to the course. PROGRAMMA/CONTENUTO General concepts: analog and digital messages. 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. PAM optimum receivers. - Bit and frame synchronization: basic techniques. - 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 bandpass 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 a digital transmission TESTI/BIBLIOGRAFIA 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 DOCENTI E COMMISSIONI SANDRO ZAPPATORE Ricevimento: Booked via e-mail. Commissione d'esame SANDRO ZAPPATORE (Presidente) CARLO ANDREA BRACCINI ALDO GRATTAROLA (Presidente Supplente) LEZIONI INIZIO LEZIONI https://corsi.unige.it/10378/p/studenti-orario Orari delle lezioni L'orario di questo insegnamento è consultabile all'indirizzo: Portale EasyAcademy ESAMI MODALITA' D'ESAME Written + oral MODALITA' DI ACCERTAMENTO The written exam is devoted to assess whether the students have actually learnt 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. Calendario appelli Data appello Orario Luogo Tipologia Note 12/01/2022 10:00 GENOVA Scritto 03/02/2022 14:30 GENOVA Scritto 14/06/2022 14:30 GENOVA Scritto 07/07/2022 10:00 GENOVA Scritto 13/09/2022 14:30 GENOVA Scritto ALTRE INFORMAZIONI None