Optional learning units

Semester 2
Option 1
Option 2
Option 3
Mobile Communications Laboratories
Mobile Communication Systems
Mobile Computing
Network Planning and Performance
Network Services and Applications
Optical Communications
Optical Communications Laboratories
Optical Networks
Wireless Networks and Protocols

Mobile Communications Laboratories

Lecturers: Nuno Borges Carvalho (coordinator), António Navarro, Atílio Gameiro

Aims: The objective of a discipline of this type is to give support to some other more theoretical disciplines in the area of wireless communication systems.
The main idea is to be able to measure in the laboratory important information that will be available to radio engineers in the field. These include the explanation of measurement instruments, and the most important figures of merit for mobile
communication system scenarios.

1. Identify the different blocks of the radio sub-system, its impact in the mobile
communication performance and the figures of merit used for characterization at
the different reference points of the radio link.
2. Identify and understand the main important Figures of Merit in radio systems.
3. Figures of merit for RF system design.
4. Parameter definition specific for mobile communications
5. Measurement techniques for evaluating the described figures of merit
6. Video Link Design and Session Protocols
7. Video and Network Measurements

Mobile Communication Systems

Lecturers: Atílio Gameiro (coordinator), António Navarro, Nuno Borges Carvalho

Aims: The objective of this course is to provide comprehensive and updated vision of the requirements and techniques used in the design of mobile and wireless communication links. It is expected that at the end of the course the students will be:
• able to identify and understand the main requirements, issues, limitations, parameters and components used in the design of point to point and multi-user radio links,
• using such a knowledge understand the rationale for the solutions adopted in existing or emerging systems and be able to participate in the development and proposal of new ones to answer the goals foreseen for future systems.

1. Introduction
2. Wireless networks
3. Wireless Channels
4. Link design and performance evaluation
5. Impairments and link degradation factors
6. Diversity
7. Spread Spectrum AN
8. Multicarrier systems
9. Multiple antenna systems

Mobile Computing

Lecturers: Adriano Moreira (coordinator), Helena Rodrigues, Rui Aguiar, Rui José

Overview: Mobile Computing has been emerging as a new paradigm for computing systems, and essentially corresponds to a vision where computation is available everywhere, where everything communicates with everything else, and where virtual and physical environments become closely interconnected. With computing devices becoming progressively smaller and more powerful, it is reasonable to expect that almost any device, from clothing to coffee mugs, will be embedded with some sort of computational capability and able to connect with a large number of other networked devices. This will dramatically change our perception of what a computer system is, as the entire environment, with all its integrated devices and associated services, becomes indistinguishable from the computer. In such scenario, the environment becomes the interface and computation devices, as we currently know them, fade into the background. Pervasive computing systems are thus radically different from traditional distributed systems, and set many new research challenges that cut across various disciplines.

Aims: This course aims to introduce students to the current challenges and opportunities in Mobile Computing, to create some insight regarding the way how mobile computing is evolving towards a world of pervasive computing and networking. The focus of the course is on the challenges and reference approaches for enabling software infrastructures to become integrated into their physical and social environments. Reference case studies will be used to guide the study of the most commonly used approaches and issues. This course will also make the bridge between mobile and pervasive computing, exploring common objectives, design principles, and research challenges, but highlighting the way in which mobile computing can be seen as a step towards a new computing paradigm. It will also explore some recent results on usability studies and new types of applications and activities in the context of users’ continual and instantly accessible presence in mobile, ubiquitous and context-aware systems.

1. Foundations of Mobile and Ubiquitous Computing
2. Mobile devices and platforms
3. Location techniques and space modelling
4. Software architectures for mobile and ubiquitous computing
5. Situated Computing
6. Real world deployment

Network Planning and Performance

Lecturers: Rui Valadas (coordinator), Amaro de Sousa, Maria Solange Lima, Paulo Salvador, Susana Sargento

Aims: The objectives of the course are to teach students (i) the main tools used in the dimensioning, traffic engineering and performance evaluation of telecommunications networks (ii) to apply these tools in realistic cases, and (iii) to characterize workloads and network traffic through statistical analysis and measurements.

1. Methodologies for performance evaluation
2. Network dimensioning and traffic engineering optimization
3. Network performance and monitoring
4. Traffic modelling and statistical characterization

Network Services and Applications

Lecturers: Susana Sargento, Manuel Ricardo, Pedro Sousa, Rui Aguiar

Aims: The objective of the course is to provide an extensive study of the challenges and solutions to support today's network services and applications with emphasis on the Internet protocol stack. The range of topics under study includes recent developments both at network, transport and applications level of the TCP/IP protocol stack, giving students the chance to ground their theoretical and experimental knowledge in that field.

1. Introduction
2. Internetworking
3. Mobile IP
4. Service integration and QoS
5. Applications and Services
6. Overlay networks
7. Future research directions

Optical Communications

Lecturers: Henrique Salgado (coordinator), Mário Ferreira, Mário Lima, Miguel Rodrigues

Aims: The course aims to provide the students with the fundamentals of present optical com-munication systems as well a deep understanding of more advanced topics in fibre optic transmission and future engineering challenges in this field.
It discusses both theoretical and applied issues covering in a first part the principles of optoelectronics and fibre optics operation followed by a presentation of a number of selected topics of recognized importance and recent results in contemporary optical communications .

1. Optical fibers: single and multimode, attenuation, modal dispersion, group-velocity dispersion, polarization-mode dispersion.
2. Sources: light-emitting diodes, laser diodes, modulation, chirp, linewidth, relativity intensity noise.
3. Photodiodes and receivers: pin, avalanche, responsitivity, transit time. Receiver performance.
4. Receiver sensitivity degradations: exctintion ratio; intensity noise, jitter, dispersion.
5. Nonlinear effects in fiber: Raman, Brillouin and Kerr (SPM, XPM, FWM).
6. Optical amplifiers: gain, saturation, noise; Erbium doped and semicondutor amplifiers; preamplified receiver performance; Raman amplifiers.
7. WDM Systems: multiplexing components; filters, gratings and multiplexers; system architectures; WDM systems crosstalk.
8. Multichannel systems: time multiplexing, subcarrier and fiber supported radio systems.
9. Solitons: solitons, loss-managed and dispersion managed-solitons.
10. Coherent detection: comparison of coherent techniques, noncoherent/coherent.
11. Signal processing in optical systems: elements of signal detection and estimation; precoders; ZF, MMSE, ML and MAP receivers; applications to the compensation of linear dispersion and nonlinear distortion; case studies.

Optical Communication Laboratories

Lecturers: Paulo André (coordinator), Abel Costa, António Teixeira, Henrique Salgado

Aims: The main goal of the Optical Communications Laboratory course is to provide a solid formation in optical communication practical measurements, focusing on the design, test and demonstration of new technologies for future broadband photonic communication systems.

1. Fundamental of optical communications measurements
2. Properties of optical fibres I (attenuation, modal distribution, polarization effects)
3. Properties of optical fibres II (bandwidth, dispersion)
4. OTDR measurements
5. Emitters and transmitters (Laser, LED and modulators)
6. Optical Amplifiers
7. WDM systems
8. Optical receivers
9. Optical filters
10. Degradation of system performance due to transmitter and optical fibre
11. Implications of optical amplifier in overall system performance

Optical Networks

Lecturers: Ferreira da Rocha (coordinator), Armando Pinto, José Ruela

Aims: The main objective of this course is to give the student the ability to analyse and design optical networks, taking into account the constraints of the physical layer, the type of traffic to be transported and the upper level protocols. To fulfil this objective the course starts by covering the first generation optical networks, where the optical technology is limited by transmission. The second generation networks are then covered in detail, starting with the study of optical network elements needed for the implementation of all-optical network nodes.


1. Introduction to optical networking.
2. First generation networks - SFH/SONET.
3. WDM networking architectures.
4. Elements for WDM networks.
5. Design of optical networks.
6. Emerging trends.

Wireless Networks and Protocols

Lecturers: Rui Aguiar (coordinator), Adriano Moreira, Manuel Ricardo

Aims: Wireless Networks and Protocols (WNP) is a course for students aimed at specializing in the mobile communications theme of MAP-Tele. The WNP course has two main objectives:
1. to provide the students with the competences required to understand current wireless networks and their main functions;
2. to provide students with the competences required to create future wireless networks and/or its associated functions.
In order to meet these objectives a set of scientific topics were identified: a) wireless networking, b) mobility, c) authentication, d) Quality of Service (QoS), and e) network support for services.

1. Introduction to Wireless Networks and Protocols.
2. Fundamentals of wireless communications.
3. Telecommunications systemss.
4. IEEE wireless data networks
5. Convergence and interoperability of wireless systems.
6. Authentication and access control.
7. Quality of Service aimed at providing abstractions, case studies, and research issues related to QoS topic.
8. Support for services and applications