
Course unit
WIRELESS SYSTEMS AND NETWORKS
INO2043955, A.A. 2013/14
Information concerning the students who enrolled in A.Y. 2012/13
ECTS: details
Type 
ScientificDisciplinary Sector 
Credits allocated 
Educational activities in elective or integrative disciplines 
INGINF/03 
Telecommunications 
9.0 
Course unit organization
Period 
First semester 
Year 
2nd Year 
Teaching method 
frontal 
Type of hours 
Credits 
Teaching hours 
Hours of Individual study 
Shifts 
Lecture 
9.0 
72 
153.0 
No turn 
Examination board
Board 
From 
To 
Members of the board 
5 A.A. 2016/2017 
01/10/2016 
15/03/2018 
ROSSI
MICHELE
(Presidente)
ZANELLA
ANDREA
(Membro Effettivo)
BADIA
LEONARDO
(Supplente)
BENVENUTO
NEVIO
(Supplente)
CALVAGNO
GIANCARLO
(Supplente)
CORVAJA
ROBERTO
(Supplente)
ERSEGHE
TOMASO
(Supplente)
MILANI
SIMONE
(Supplente)
PUPOLIN
SILVANO
(Supplente)
VANGELISTA
LORENZO
(Supplente)
ZANUTTIGH
PIETRO
(Supplente)
ZORZI
MICHELE
(Supplente)

4 A.A. 2015/2016 
01/10/2015 
15/03/2017 
ROSSI
MICHELE
(Presidente)
ZANELLA
ANDREA
(Membro Effettivo)
BADIA
LEONARDO
(Supplente)
BENVENUTO
NEVIO
(Supplente)
CALVAGNO
GIANCARLO
(Supplente)
CORVAJA
ROBERTO
(Supplente)
ERSEGHE
TOMASO
(Supplente)
MILANI
SIMONE
(Supplente)
PUPOLIN
SILVANO
(Supplente)
VANGELISTA
LORENZO
(Supplente)
ZANUTTIGH
PIETRO
(Supplente)
ZORZI
MICHELE
(Supplente)

3 A.A. 2014/2015 
01/10/2014 
15/03/2016 
ROSSI
MICHELE
(Presidente)
BADIA
LEONARDO
(Membro Effettivo)
BENVENUTO
NEVIO
(Supplente)
CALVAGNO
GIANCARLO
(Supplente)
CORVAJA
ROBERTO
(Supplente)
ERSEGHE
TOMASO
(Supplente)
PUPOLIN
SILVANO
(Supplente)
ZANELLA
ANDREA
(Supplente)
ZANUTTIGH
PIETRO
(Supplente)
ZORZI
MICHELE
(Supplente)

2 
01/10/2013 
15/03/2015 
ROSSI
MICHELE
(Presidente)
BADIA
LEONARDO
(Membro Effettivo)
BENVENUTO
NEVIO
(Supplente)
CALVAGNO
GIANCARLO
(Supplente)
CORTELAZZO
GUIDO MARIA
(Supplente)
CORVAJA
ROBERTO
(Supplente)
ERSEGHE
TOMASO
(Supplente)
LAURENTI
NICOLA
(Supplente)
PUPOLIN
SILVANO
(Supplente)
TOMASIN
STEFANO
(Supplente)
VANGELISTA
LORENZO
(Supplente)
ZANELLA
ANDREA
(Supplente)
ZANUTTIGH
PIETRO
(Supplente)
ZORZI
MICHELE
(Supplente)

Prerequisites:

The student should have a good knowledge of basic probability theory, including random processes, random variables, their expectations, etc. Note that no previous courses are required as mandatory as the instructor will go through the needed preliminary theory at the beginning of each topic.
Nevertheless, for some of the mathematical analyses that will be presented in the course, additional knowledge on stochastic processes and in particular on Markov processed may be helpful. Hence, the prospective student may also want to attend:
Course no.: IN0521, Code: INP3049939, Name: NETWORK MODELING  MODELLI PER LE RETI
In addition, some basic knowledge on computer networks, including their basic tools for performance analysis (queueing theory) and some knowledge on networking protocols (in particular link layer and transport) is also beneficial. Hence, the prospective student may also want to attend:
Course no.: IN0521, Code: INP3050962, Name: TELECOMMUNICATION NETWORKS  RETI DI TELECOMUNICAZIONI 
Target skills and knowledge:

As a minimal set of achievements, the student will become knowledgeable about modern centralized and distributed wireless systems such as IEEE 802.11 (a/g/n/h) and Wireless Sensor Network technology (IEEE 802.15.4), getting to know the related protocol stacks in terms of physical layer, channel access and routing procedures.
Also, at the end of the course the student will have a solid understanding of the fundamental networking protocols used in wireless networks, of the reasons behind their design and on the relevant performance tradeoffs. Some fundamental aspects of the wireless channel and of modern physical layer technologies will also be covered in the course. These will be then related to the network protocols that are commonly used in wireless centralized (e.g., WiFi) and distributed (e.g., Wireless Sensor Networks) networks, discussing: design choices, performance measures and relevant tradeoffs.
Finally, the student will acquire the ability of analyzing a certain wireless communication scenario, and characterizing the performance of selected network protocols in order to correctly dimension the system. Also, he will be able to analyze a wireless networking solution through simulation and will possibly develop the sensibility to modify the involved protocols to enhance their performance. 
Examination methods:

To pass the exam, a student needs to pass a written examination and to provide the instructor with a written technical project (a teamwork carried out with other students of the course). For each of these two, the student needs to attain at least 18 points (i.e., the lowest passing grade). An additional oral test is optional and decided on a casebycase basis, depending on the performance attained for the written exam and the project and on whether the student aims at obtaining extracredit, so as to improve his/her final grade.
FINAL GRADE: the final grade will be attained as the weighted sum of the grade assigned to the written examination and of that of the technical project. Additionally an oral exam will also be taken into account and handled on a casebycase basis.
WRITTEN EXAM: the written exam usually contains one exercise and two theory questions. The exercise is about dimensioning a wireless networking system, involving the transmission of some data flow through a network of terminals, where some of the links are wireless. Different exercises and their solution will be amply discussed by the instructor throughout the course. The two theory questions are either about deriving equations to characterize the performance of a certain protocol that has been presented in the course or discussing the advantages or disadvantages of a certain technology or protocol. Past exams can be found in the Internet site of the course, some of them include the solution to the technical exercise:
http://www.dei.unipd.it/~rossi/courses/SRW/Results.html
TECHNICAL PROJECT: technical projects can be of three types: T1) technical project (involving computer simulation or selected theoretical developments), T2) technical review (involving a review of relevant techniques from the scientific and technical literature), T3) experimental project (involving the design and implementation of a network protocol in real software). Proposals and possibilities for the technical projects will be amply discussed by the instructor throughout the course.
WHEN TAKING A NEW WRITTEN EXAM. If a student has been assigned a sufficient grade from a past written examination, he/she has the right of taking a new written exam to improve his/her grade. In the case he/she decides to do so, the student will have 15 minutes to check the exercises and questions of the new written exam and decide as to whether he wants to continue with this new exam or maintain the old grade (from the last written examination he/she has passed). In the former case, the grade from the new written exam will replace that of the last written exam he/she has passed. 
Assessment criteria:

To pass the exam, a student needs to pass a written examination and to provide the instructor with a written technical project. For each of these two, the student needs to attain at least 18 points (i.e., the lowest passing grade). An additional oral test is optional and decided on a casebycase basis, depending on the performance attained for the written exam and the project and on whether the student aims at obtaining extracredit, so as to improve his/her final grade.
CALCULATION OF THE FINAL GRADE:
The final grade vf, that will be registered online and on the "libretto", is obtained from the weighted sum of the grade assigned to the written examination "ve" and that assigned to the written project "vp" as follows:
vf = we*ve + wp*vp,
where the weighting coefficients we and wp are given as follows. Projects of type T1 and T2: we=0.6 and wp=0.4, projects of type T3: we=0.4 and wp=0.6. The instructor will propose a final grade to the student according to the above formula; the student has the right of taking an additional oral examination (optional and ondemand).
If requested by the student, the outcome of an additional oral test will also be taken into account and handled on a casebycase basis. 
Course unit contents:

The course aims at providing some advanced knowledge on protocol stacks for wireless communications, including the analysis of distributed wireless networks, state of the art wireless technologies and current trends. The topics that will be covered will range from link layer technology to routing over ad hoc wireless networks and application layer coding. Selected topics will be presented using recent research papers from the literature as a source of reference. In the first part of the course, the student will be introduced to the technology used in modern ISO/OSI stacks, characterizing the performance of the single layers and then of the protocol stack as a whole. In the second half of the course, the focus will be on distributed ad hoc network architectures, with particular emphasis on distributed WiFi networks (IEEE802.11 a/g/h/n) and wireless sensor networks (IEEE 802.15.4). The corresponding technologies (IEEE 802.11 and 802.15.4) will be introduced in detail (PHY/MAC/routing), characterizing their performance through suitable mathematical tools. The course will be research oriented and, at the end of it, the student will have a clear view on modern protocol technology, and will be able to carry out its performance evaluation through tractable mathematical tools.
The main topics that will be discussed in the course are:
 Wireless channel:
* Simulationbased introduction to wireless channel models: path loss, shadowing, fading and frequency selectivity
 Link layer:
* Link layer algorithms based on FEC: applications
* Hybrid ARQ systems: mathematical analysis and performance evaluation
* Fountain codes: theoretical foundations, optimal and suboptimal (practical) decoders
 Protocol stack analysis:
* Performance evaluation of protocol stacks over correlated fading channels. This analysis will cover all layers from the physical layer up to the transport, accounting for Markov channel models, ARQ system models and transpor protocol performance
 IEEE 802.11 a/g/h/n:
* Physical layer technology. Introduction to the OFDM technology, diversity and MIMO techniques
* Channel access technology (Medium Access Control, MAC)
* Mathematical analysis and performance evaluation of dynamic rate control algorithms (adaptive modulation and coding)
 Routing over "ad hoc" multihop wireless networks:
* Performance analysis of data dissemination in multihop mobile wireless networks
* Description and performance evaluation of selected routing algorithms for ad hoc wireless networks
 Wireless sensor networks (WSN):
* Relevant channel access and routing algorithms, analytical models and their performance analysis
* Study of WSN systems powered by energy harvesting sources 
Planned learning activities and teaching methods:

All course subjects will be treated by means of frontal lectures. Slides will be used by the instructor whenever needed to illustrate diagrams, schemes and performance results. All the slides will be made available through the website of the course before each lesson will take place. Mathematical calculations will be mainly dealt with at the blackboard.
Numerous exercises will be solved to demonstrate the application of the theory presented in the course for the performance evaluation of distributed wireless systems.
Relevant research directions will be also discussed. 
Additional notes about suggested reading:

All the material will be in English. Being this an advanced course, at the present time thereĀ is no book covering all the topics of the course. Also, most of the technologies that will be discussed, along with the corresponding modeling approaches / mathematical analyses, will be taken from relevant and recent scientific papers.
The instructor will provide all the relevant material that is necessary for the student to prepare the exam, including scientific papers, technical reports and the slides that will be used by the instructor for each lecture. All of this is available at the course site:
http://www.dei.unipd.it/~rossi/courses/SRW/SRW.html 
Textbooks (and optional supplementary readings) 

Andrea Goldsmith, Wireless Communications. : Cambridge University Press, 2005.


