PASIPHAE staff actively participates in the postgraduate programme (MSc) of the Electrical and Computer Engineering department, which leads to a master’s diploma in “Applied Informatics & Multimedia”. PASIPHAE is responsible for two optional/compulsory MSc modules, namely “wireless networks” and the “advanced topics in antennas and wireless propagation and measurements” ones, besides participating in the “computer networks” module that is a core module of the programme. All courses are taught in English, targeting in-depth theoretical analysis and laboratory-based experimentation in state-of-the-art areas of wireless telecommunications and their utilisation/exploitation by networked media. Short description of these modules is presented below.

Wireless Networks
Theory/Lab Sessions 5 hours/2 hours Credits 7.5
Semester 2 Faculty Evangelos Pallis

Aim: The course aims to provide an understanding of the fundamental concepts of contemporary Wireless, Mobile and Personal Telecommunication systems. The course includes a historical overview of wireless and mobile systems, the cellular concept and its operational characteristics (Cell, Radiochannel, Trucking and Quality of service, Handoff, Cell splitting, Radiowaves’s propagation, Multipath fading), the GSM system (fundamental principles, architecture of GSM, operations and services), the GSM Radiointerface (frequency allocation, Multiplexing, Channels), the road towards 3G systems (Mobile Internet, WAP, GPRS, EDGE, UMTS, 3G Networks), the Wireless Local Loop (DECT protocol, Description, Applications), as well as the Private Mobile Radios (PMR concept, TETRA protocol, Applications). The course also deals with digital broadcasting technologies and elaborates on the Digital Dividend by delving into cognitive radio technologies, dynamic spectrum access and radio-resource trading policies. It also elaborates on secondary systems’ radio-spectrum exploitation for Ad-Hoc secondary networks, Wireless Mesh and mobile IP systems, Wireless Sensor Networks (WSN) and TCP/IP and wireless Industrial networks. The methodology exploits pedagogical and didactical approaches based on recent advances in wireless networks as those presented and analysed in selected journal publications and conference papers, aiming to delve into state-of-the-art concepts, besides enabling students to collaboratively work on projects that will be submitted and evaluated at the end of the semester.

Course description: PHYSICAL AND WIRELESS MAC LAYER ALTERNATIVES: Wired transmission techniques: design of wireless modems, power efficiency, out of band radiation, applied wireless transmission techniques, short distance base band transmission, VWB pulse transmission, broad Modems for higher speeds, diversity and smart receiving techniques, random access for data oriented networks, integration of voice and data traffic. WIRELESS NETWORK PLANNING AND OPERATION: Wireless networks topologies, cellular topology, cell fundamentals signal to interference ratio calculation, capacity expansion techniques, cell splitting, use of directional antennas for cell sectoring, micro cell method, overload cells, channels allocation techniques and capacity expansion FCA, channel borrowing techniques, DCA, mobility management, radio resources and power management securities in wireless networks. WIRELESS WAN: Mechanism to support a mobile environment, communication in the infrastructure, IS-95 CDMA forward channel, IS – 95 CDMA reverse channel, pallert and frame formats in IS – 95, IMT – 2000; forward channel in W-CDMA and CDMA 2000, reverse channels in W-CDMA and CDMA-2000, GPRS and higher data rates, short messaging service in GPRS mobile application protocols. WIRELESS LAN: Historical overviews of the LAN industry, evolution of the WLAN industry, wireless home networking, IEEE 802.11. The PHY Layer, MAC Layer, wireless ATM, HYPER LAN, HYPER LAN – 2. WIRELESS SENSOR NETWORKS: Brief discussion on WSN, Efficient design and implementation of WSN systems and applications that connect the physical world to the virtual world ,the Zig-Bee Protocol and the ZigBee Mesh technology for the nodes communication, 2.4Ghz IEEE 802.15.4, the TinyOs etc.The development of a platform based on WSN for environmental measurements. INDUSTRIAL NETWORKS: Brief discussion on Industrial networks and fieldbus protocols, Industrial Ethernet and Wireless networks. Applications. WPAN AND GEOLOCATION SYSTEMS: IEEE 802.15 WPAN, Home RF, Bluetooth, interface between Bluetooth and 802.11, wireless geolocation technologies for wireless , geolocation standards for E.911 service. DIGITAL INTERACTIVE BROADCASTING: Brief discussions on image encoding according to MPEG-2 standard, audio MPEG-2 encoding, MPEG-2 transport stream, transmission bit rates, quality of service (video and audio), Profiles and Levels used at the MPEG-2 encoding, GOP size, Frame distance. Study and implementation of a system for provision of interactive multimedia services employing a DVB-T platform. Study and evaluation of the quality of service provision regarding multimedia services when the return channel is based on broadband wireless technologies (e.g. WLAN, GPRS) and in wired technologies (PSTN, ISDN). COGNITIVE RADIOS: Introduction to cognitive radio, Techniques for design, analysis, and optimization of dynamic spectrum access and management, Optimization techniques, Game theory, Dynamic spectrum access and management, Centralized dynamic spectrum access, Distributed dynamic spectrum access cooperative andnon-cooperative approaches, learning algorithms and protocols, Economics of dynamic spectrum access and trading, applications of spectrum trading models.

[1] “Wireless Communications: Principles and Practice”, Theodore S. Rappaport, Prentice Hall, ISBN: 0780311671.
[2] “Principles of Wireless Networks- A united approach”, K. Pahlavan, P. Krishnamoorthy, Pearson, 2007.
[3] “Mobile Communications” Jochen Schiller, Person Education (2008).
[4] “Wireless Communication Systems”, X.Wang and H.V.Poor, Pearson education, 2004.
[5] “Mobile and Wireless design essentials”, M.Mallick, Wiley Publishing Inc. 2007.
[6] “Wireless Networks”, P.Nicopolitidis, M.S.Obaidat, G.I. papadimitria, A.S. Pomportsis, John Wiley & Sons, 2007.
[7] “Digital Television, DVB-T, COFDM & ATSC 8-VSB”, Mark Massel, ISBN 0-9704932-1-5.
[8] “Digital interactive TV and metadata”, Artur Lugmayr, Samuli Niiranen, Seppo Kalli, Springer, 2004.
[9] “Dynamic Spectrum Access and Management in Cognitive Radio Networks”, Ekram Hossain, Dusit Niyato, Zhu Han, Cambridge University Press, 2009, ISBN-13 978-0-521-89847-8.

Advanced Topics in Antennas and Wireless Propagation and Measurements
Theory/Lab Sessions 5 hours/2 hours Credits 7.5
Semester 2 Faculty Dimitrios Stratakis

Aim: The course is mainly intended for MSc and PhD students with a background in Electromagnetics. Understanding of advanced concepts of electromagnetic fields and electromagnetic radiation and propagation, advanced antenna structure and design, and advanced theory and practice of wireless systems and links and associated measurement methods and their use in modern telecommunications systems, are the main topics of this course. Based on the latest literature and especially on selected articles that will be presented, the students should have a much deeper understanding in particular subjects at antennas, wireless systems and links, and methods of measurement used in practice, which play an important role in modern telecommunications. The students, with collective or individual tasks that they will submit before the end of the academic semester, will get more theoretical and practical experience in the above topics.

Course description: Advanced topics in electromagnetics: Advanced topics of current interest in Electromagnetic Engineering, Maxwell Equations and time varying fields, gradient and vector potentials, Poynting’s theorem, properties of electromagnetic waves (reflection, refraction, polarization, etc.), solving of electromagnetic field integral equations by the method of moments, etc. Advanced antenna systems: Advanced techniques needed to analyze antenna systems are studied. Directionality and antenna gain, active antenna surface, radiation resistance, active height, mirroring, near and far antenna field, antenna temperature, antenna diagrams and design, bipolar and linear antennas, uniform and no uniform antenna arrays, surface antennas, receiving antennas, travelling wave antennas, antennas with reflector. Fundamental design and composition of antenna parameters with specified properties, antenna selection issues, antenna adjustment methods, antenna measurement methods. Advanced topics in propagation of electromagnetic waves and measurements: Propagation of electromagnetic waves (free space, earth propagation, ground waves, space waves, surface waves, line of sight conditions, impact of obstacles). Troposphere diffusion, refraction, multipath propagation, aliasing, differential receiving. Ionosphere Propagation and ionosphere refraction, reflection, Friis equation, equation of the Radar. One-way and two-way links, point to point links, point to-multi point links, link budget, bandwidth and capacity, radio communication design, power balance, interference, measurements on radio communication links, electromagnetic field measurement methods (broadband and narrowband) on modern wireless broadband radiocommunication systems.

[1] “Maxwell’s Equations and the Principles of Electromagnetism”, Richard Fitzpatrick, Infinity Science Pr Llc, 2008.
[2] “Electromagnetism”, Gerald L Pollack, Daniel Stump, Daniel R Stump, Addison Wesley Longman, 2001.
[3] “Engineering Electromagnetics”, 6th Edition, William H. Hayt and John A. Buck, McGraw-Hill, 2000.
[4] “Electromagnetic Waves and Antennas”, S. J. Orfanidis, http://, 2008.
[5] “Modern Antenna Handbook”, Constantine A. Balanis, John Wiley & Sons Inc., 2008.
[6] “Modern antenna design”, 2nd edition., Milligan, Thomas A., Wiley-Interscience, 2005.
[7] “Antenna Theory and Design”, Warren L Stutzman, Stutzman, Gary A Thiele, John Wiley & Sons, 1998.
[8] “Antennas: Fundamentals, Design, Measurement”, L. V. Blake, M. W. Long, 2008.
[9] “Antenna Design Optimization”, T L Pitzer, Wexford College Press, 2008.
[10] “Antenna Measurement Techniques”, Gary E Evans, Artech House Publishers, 1990.
[11] “Radiowave Propagation and Antennas for Personal Communications (Antennas & Propagation Library)”, Kazimierz Siwiak and Yasaman Bahreini, Artech House Inc., 2007.