Corso di laurea: Ingegneria delle telecomunicazioni Programmazione per l'A.A. 2021/2022

General principles (2 CFU – 14 h):

Introduction to electromagnetics, relevance and applications. Maxwell equations in time domain. Lorentz force. Fields conditions on discontinuity. Maxwell equations in sinusoidal regime. Polarization of the electromagnetic fields. Constitutive relations. Electromagnetic properties of media. Cold and collisionless plasma. Poynting vector and uniqueness conditions. Sommerfeld's radiation conditions.

Transmission lines (2.5 CFU – 17.5 h):

Guiding structures with cylindrical symmetry and metallic contour. TEM modes. Voltage and current on a transmission line. Telegraphers' equations in time and frequency domain. Phase velocity. Solution of Telegraphers' equations in progressive and stationary form. Reflection coefficient. Impedance transformer formula. Matched load, reactive load, generic load. Voltage standing wave ratio (VSWR). Matching techniques, quarter-wave transformer, matching with stubs. Resonant conditions on transmission lines. Transmission lines with losses. Narrowband signal propagation and group velocity. Impedance of coaxial cable and bifilar line.

Reflection and transmission of plane waves (1.5 CFU – 10.5 h):

Homogeneous and inhomogeneous plane waves. Normal incidence. Penetration depth. Snell's laws. Fresnel coefficients for parallel (TM) and orthogonal (TE) polarization. Transmission in lossless media. Total transmission and total reflection. Transmission in lossy media. Leontovic condition.

Radiation and antennas (2 CFU – 14 h):

Electromagnetic potentials. Field radiated by an elementary electric dipole. Field radiated by an elementary current loop. Duality. Field radiated by linear antennas. Far field conditions. Input resistance and radiation resistance. Effective length. Transmitting antenna, directivity and gain. Short dipole, half-wave dipole, monopole. Receiving antennas. Polarization and power matching. Effective area. Friis's formula for link budget. Linear and planar antennas arrays. Image sources.

Laboratory (1 CFU – 25 h):

Experimental verification of Snell's laws at optical frequencies. Study and design of waveguides and linear antennas using numerical CAD. Measurement of radiation patterns of linear antennas.

Textbook Information

1. S. J. Orfanidis, "Electromagnetic Waves and Antennas".

2. G. Franceschetti, Electromagnetics, Theory, Techniques, and Engineering Paradigms, Springer.

3. C. G. Someda, "Electromagnetic Waves", CRC Press.

4. F. T. Ulaby, U. Ravaioli Fundamentals of Applied Electromagnetics (7th Edition), Pearson Education.

Underlying network technologies



Background on physical interfaces and IEEE 802.11 standards

Laboratorio: network cabling






Cfu: 0,5




2: Internetworking in una rete Internet:


Tecniche di forwarding e routing,; transparent bridging, Indirizzamento IP, (*)

Subnetworking, indirizzi privati, NAT, PAT; VLAN (*)

Risoluzione degli indirizzi (ARP, BootTP, DHCP) (*) ;

protocolli IP (IPv4, cenni IPv6)Error reporting in una Internet (ICMP); (*)

Architetture e Protocolli di routing (RIP, OSPF, BGP) (*)

TCP, UDP

Laboratorio : configurazione routers/switchs, VLAN, routing


Cfu 2,5




3. Multicast nelle reti IP:


hardware multicast, multicastIP, IGMP, Routing multicast, MBone


Cfu: 0,5




4. Network security


Network security issues

Classification of network attacks. Principles of cryptography. Authentication schemes.

IpSec protocol




Cfu 0,75






5. Network performance fundamentals and queueing theory


Network performance metrics (*). Introduction to queueing theory. Poisson processes. Discrete-time(*) Markov chains. Continuous-time (*) Markov chains. M/M/1 systems(*). M/M/1/n systems. M/G/1 systems. M/G/1 systems with priority. M/D/1 systems. Introduction to networks of queues.

Performance evaluation: case studies

Performance analysis of data-link control protocols. Performance analysis of MAC protocols: random access and carrier sensing schemes. Numerical exercises on performance evaluation.




Cfu 2,5






6.QoS management nelle reti IP:


Classificazione, CAC, Controllo del traffico, Scheduling, Gestione delle
code,
Modello IntServ: Modello DiffServ


Cfu: 1




7. MPLS:


Forwarding Equivalent Class, Label Switched Router, Tabelle di routing (LIB, NHLFE,ILM), Gestione
etichette, Label Switched Path, Distribuzione delle accociazioni FEC/Etichette (Label Distribution Protocol), Integrazione MPLS_Diff SERV, Ingegneria del traffico; RSVP-TE(*)



* Contenuti minimi richiesti


Cfu 1,25













Gli studenti della coorte 2020-21 che hanno nel piano di studi l'insegnamento INTERNET da 6 CFU sono esonerati dagli argomenti della sezioni

1. Underlying network technologies

5. Network performance fundamentals and queueing theory

1 J. Kurose, K. Ross: Computer Networking, Addison-Wesley (Italiano/Inglese)

2 Mario Baldi, Pietro Nicoletti: Internetworking (Italiano)

3 Tiziano Tofoni: MPLS: Fondamenti e applicazioni alle reti IP (Italiano)

4. Luc De Ghein: MPLS Fundamentals (Inglese)

5. Achille Pattavina: Reti di Telecomunicazioni, Networking e Internet

1. Evolutional trends of networking

Architectural and conceptual issues for the next-generation Internet. Principles of network programmability. Advanced approaches for network control and management. Software Defined Networking (SDN) and Network Function Virtualization (NFV).

2. Advanced network applications

Main application protocols: HTTP, SMTP, DNS. Peer-to-peer applications. Data Center networking. Multimedia network applications: video streaming and Content Delivery Networks.

3. Technologies for wireless access networks

Wireless LANs and ad hoc networks. Vehicular networks. UAVs. Underwater communications. Body and intrabody area networks. Satellite-based networks.

4. Architectures and systems for optical transport networks

Fundamentals of fiber optic communications. Optical switches and routers.

5. Tools for network modeling and design

Network optimization techniques. Machine learning in networking. Game theory.

1) J. Kurose, K. Ross: Computer Networking, Addison-Wesley.

2) A. Tanenbaum: Computer Networks, Prentice-Hall.

3) D. Bertsekas, R. Gallager: Data Networks, Prentice-Hall.

4) A. Pattavina: Internet e Reti - Fondamenti.