This tutorial provides a comprehensive overview of the modelling, analysis, and simulation of mobile radio channels. It offers a detailed understanding of fundamental issues and examines state-of-the-art techniques in mobile radio channel modelling. Important classes of mobile fading channels will be presented, including terrestrial and satellite channels, various types of wideband channels, advanced multiple-input multiple-output (MIMO) channels, mobile-to-mobile channels, vehicle-to-vehicle channels, and channel models for cooperative communication systems. Among them are the following:
- Introduction and basic principles of mobile radio channel modelling
- Explanation of different methodologies for the modelling of mobile radio channels
- Examination of general channel modelling concepts starting from geometrical models over reference models up to simulation models
- Design of reference and simulation models for mobile radio channels using the sum-of-sinusoids (SOS) and the sum-of-cisoids (SOC) principle
- Discussion of various methods for the modelling of given Doppler, delay, and angular profiles
- Presentation of various classes of narrowband and wideband mobile radio channels
- Elaboration on the modelling and simulation of space-time-frequency MIMO channels
- Description of mobile-to-mobile and vehicle-to-vehicle MIMO channels
- Exploration of mobile radio channels for cooperative networks, including double Rayleigh and double Rice channels
- Outlining methods for the design of measurement-based channel models
- Providing an overview of standardized channel models.
Duration of the tutorial: The tutorial will last one half-day.
The tutorial is mainly addressed to scientists, especially Ph.D. students and postdoc researchers, who are working in the area of mobile communications with emphasis on propagation and physical layer issues. In addition to that, the tutorial is also suitable to telecommunication engineers, electrical engineers, and physicists, who are working in industry or research centres in the field of wireless communications, and therefore have a professional interest in subjects dealing with mobile radio channels. Last, but not least, the tutorial is addressed to professors and lecturers teaching courses on mobile communications, where the mobile radio channel plays a major role.
Matthias Pätzold was born in Engelsbach, Germany, in 1958. He received the Dipl.-Ing. and Dr.-Ing. degrees from Ruhr-University Bochum, Bochum, Germany, in 1985 and 1989, respectively, all in Electrical Engineering. In 1998, he received the habil. degree in Communications Engineering from the Technical University of Hamburg-Harburg, Hamburg, Germany. From 1990 to 1992, he was with ANT Nachrichtentechnik GmbH, Backnang, Germany, where he was engaged in digital satellite communications. From 1992 to 2001, he was with the Department of Digital Networks at the Technical University Hamburg-Harburg. In 2001, he joined the University of Agder, Grimstad, Norway, where he is a full professor for Mobile Communications and the Head of the Mobile Communications Group. He authored and co-authored more than 250 technical journal and conference papers. His publications received ten best paper awards. He is author of the books “Mobile Radio Channels - Modelling, Analysis, and Simulation” (in German) (Wiesbaden, Germany: Vieweg, 1999), “Mobile Fading Channels” (Chichester, U.K.: Wiley & Sons, 2002), which has been translated into Chinese in 2008, and “Mobile Radio Channels” (Chichester, U.K.: Wiley & Sons, 2011).
Maged Elkashlan, Trung Q. Duong, Vo Nguyen Quoc Bao, and Arumugam Nallanathan
More and more of popularity of customers have posed a demanding challenge for current cellular networks. The most critical issue of wireless systems is to satisfy the ever increasing demand of multimedia services, which imposed a huge increase in bandwidth. One of prominent solution is to use the cognitive radio concept, where secondary users (SUs) are allowed to concurrently occupy the same spectrum band which is assigned to primary users (PUs) as long as SUs’ transmission do not cause any harmful interference on the PUs. The fundamental deadlock of cognitive radio systems is, however, the interference management problem between PUs and SUs, which leads to the fact that the secondary reliability is severely degraded. One important direction of research is to use the concept of cooperative communications, where relays have demonstrated a vital role in terms of enhancing secondary communications reliability. As a result, cognitive cooperative communications have appealed the mobile operators as an efficient approach to enhance coverage and capacity for future wireless communications. The following topics will be included:
- Cooperative spectrum sharing
- Security issues in cooperative cognitive networks
- Novel multiple access techniques in cooperative cognitive networks
- Relay selection techniques in cooperative cognitive networks
- Multi-hop and multiway techniques cooperative cognitive networks
- MIMO techniques in cooperative cognitive networks
- Hardware impairment issue in cooperative cognitive networks
Intended length of the tutorial: Half-day (3 hours)
This tutorial will introduce the theory, principles, and protocols of cognitive cooperative communications. It will take the audience step-by-step from the basics of two-hop cognitive cooperative networks, through to various more advanced protocols to include multi-relay and multi-hop cognitive cooperative networks in various generalized fading environments. Advanced topics will include multi-relay multiuser relaying, MIMO multiuser relaying, spatial diversity concept, cognitive two-way relaying, best relay selection, and partial relay selection. Specific focus is given to performance analysis, power allocation, and relay placement. All results will be backed up with important design insights and impact of key network parameters on the network behavior. A coherent guide of the main theory and a unified easy-to-follow analysis will be presented, as well as simulation studies which examine the various network design tradeoffs.
Maged Elkashlan received the Ph.D. degree in Electrical Engineering from the University of British Columbia, Canada, in 2006. From 2006 to 2007, he was with the Laboratory for Advanced Networking at the University of British Columbia. From Proposal for IEEE Wireless Communications Magazine 2007 to 2011, he was with the Wireless and Networking Technologies Laboratory at the Commonwealth Scientific and Industrial Research Organization (CSIRO), Australia. He also held adjunct appointment at the University of Technology Sydney, Australia, between 2008 and 2011. In 2011, he joined the School of Electronic Engineering and Computer Science at Queen Mary, University of London, United Kingdom. He also holds visiting faculty appointments at the University of New South Wales, Australia and Beijing University of Posts and Telecommunications, China. His research spans the area of wireless communications and signal processing, with special emphasis on distributed wireless networks, cooperative wireless networks, MIMO systems, cognitive radio, and physical layer security. He has served as Technical Program Committee member for several IEEE conferences such as IEEE International Conference on Communications (ICC) and IEEE Global Communications Conference (GLOBECOM). He is currently an Editor of the IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS and IEEE COMMUNICATIONS LETTERS, and an Associate Editor of the IEEE TRANSACTIONS ON VEHICULAR TECHNOLOGY.
Trung Q. Duong received his Ph.D. degree in telecommunications systems at Blekinge Institute of Technology, Sweden in 2012. He was awarded the Best Paper Award of IEEE Student Paper Contest - IEEE Seoul Section in December 2006 and was listed in the finalist for the Best Paper Award at the IEEE Radio and Wireless Symposium, San Diego, U.S.A. in 2009. Dr. Duong has been acting as a frequent reviewer for many journals and conferences and serving as a TPC member for major IEEE conferences including ICC, GLOBECOM, WCNC, VTC, PIMRC. He has been a TPC co-chair of the International Conference on Computing, Managements, and Telecommunications 2013 (ComManTel13), International Workshop on Green Communications and Networking 2013 (GCN13), IEEE GLOBECOM 2013 Workshop on Trusted Communications with Physical Layer Security (TCPLS13),Wireless Symposium Chair of Advanced Technologies for Communications 2013 (ATC13). He has been working as a visiting scholar at Polytechnic Institute of New York University from December 2009 to January 2010 and Singapore University of Technology and Design from July 2012 to August 2012. He has been with Blekinge Institute of Technology (BTH), Sweden as a research staff since December 2007. Currently, he is working at BTH as a project leader/lecturer. He is an author/coauthor of 100 technical papers (44 ISI journals). He is a Senior Member of IEEE and also an Editor of IEEE COMMUNICATIONS LETTERS, a Guest Editor of EURASIP JOURNAL on COMMUNICATIONS and NETWORKING, special issue on “Cooperative Cognitive Networks”, Lead Guest Editor of IET COMMUNICATIONS, special issue on “Secured Physical Layer Communications”. His current research interests include merging technologies for green communications and networking such as cross-layer design, cooperative communications, cognitive radio networks, and physical layer security.
Vo Nguyen Quoc Bao received the B.E. and M.Eng. degree in electrical engineering from Ho Chi Minh City University of Technology (HCMUT), Vietnam, in 2002 and 2005, respectively, and Ph.D. degree in electrical engineering from University of Ulsan, South Korea, in 2009. In 2002, he joined the Department of Electrical Engineering, Posts and Telecommunications Institute of Technology (PTIT), as a lecturer. Since February 2010, he has been with the Department of Telecommunications, PTIT, where he is currently an Assistant Professor. His major research interests are modulation and coding techniques, MIMO systems, combining techniques, cooperative communications, and cognitive radio. Dr. Bao is a member of Korea Information and Communications Society (KICS), The Institute of Electronics, Information and Communication Engineers (IEICE) and The Institute of Electrical and Electronics Engineers (IEEE). He is also a Guest Editor of EURASIP Journal on Wireless Communications and Networking, special issue on “Cooperative Cognitive Networks” and IET Communications, special issue on “Secure Physical Layer Communications”.
Nallanathan Arumugam is a Professor of Wireless Communications in the Institute of Telecommunications at King’s College London. He served as the Head of Graduate Studies in the School of Natural and Mathematical Sciences at King’s College London, 2011/12. He was an Assistant Professor in the Department of Electrical and Computer Engineering, National University of Singapore from August 2000 to December 2007. His research interests include Smart Grid, Cognitive Radio and Relay Networks. He published nearly 200 Journal and Conference papers in these areas with nearly 2000 citations and H-index of 23. He is a co-recipient of the Best Paper Award presented at the 2007 IEEE International Conference on Ultra-Wideband (ICUWB2007). He is an Editor for IEEE Transactions on Communications, IEEE Transactions on Vehicular Technology, IEEE Wireless Communications Letters and IEEE Signal Processing Letters. He was an Editor for IEEE Transactions on Wireless Communications (2006-2011) and a Guest Editor for EURASIP Journal on Wireless Communications and Networks: Special issue on UWB Communication Systems-Technology and Applications (2006). He currently serves as the Chair for the Signal Processing and Communication Electronics Technical Committee of IEEE Communications Society, Technical Program Co-Chair (MAC track) for IEEE WCNC 2014 and Co-Chair for the IEEE GLOBECOM 2013 (Communications Theory Symposium). He served as the Co-Chair for the IEEE ICC 2012 (Signal Processing for Communications Symposium), Co-Chair for the IEEE GLOBECOM 2011 (Signal Processing for Communications Symposium), Technical Program Co-Chair for the IEEE International Conference on UWB 2011 (IEEE ICUWB 2011), Co-Chair for the IEEE ICC 2009 (Wireless Communications
Huu-Thanh Nguyen and Ngoc-Nam Pham
Hanoi University of Science and Technology
Cloud computing and other data services in the recent years have become increasingly popular owing to the evolution of data center and parallel computing paradigms. New data center and cloud-based multimedia applications such as Video on Demand (e.g., YouTube), online storage and other cloud services etc., are becoming more common and are requiring additional network and server resources. Furthermore, data center networks nowadays are specifically designed to be extremely over dimensioned in terms of switching capacity and of number of deployed links and nodes to guarantee zero-loss and minimum latency packet forwarding. Thus, recent surveys have shown that the energy consumption in a data center considerably contributes to its operation costs. A remarkable part of the large energy volume consumed in data centers today is due to the over-provisioning of such network resources as switches, links, and servers to meet the stringent requirements on reliability. Therefore performance and energy issues are important factors for the design of large multi-tier data centers that can support multiple services.
The tutorial is divided into two parts. In the first part of the talk, we address the motivations for current research activities on the areas of Green ICT. Recent hot research topics for energy-efficient networking, especially green data centers and clouds will also be discussed. In the second part, experiences and research results within the framework of the project ECODANE (Reducing Energy COnsumption in Data center Networks) will be shared, including data center traffic measurement and modeling, energy profiling of network devices, energy-aware testbed, protocols and optimization algorithms.
Intended length of the tutorial: Half-day (3 hours)
Nguyen Huu Thanh received B.S and M.Sc in Electrical Engineering from Hanoi University of Science and Technology, Vietnam in 1993 and 1995, respectively. In 2002, he received his PhD with summa cum laude in Computer Science from the University of Federal Armed Forces Munich (Germany). From 2002 to 2004 he has been with the Fraunhofer Institute for Open Communication Systems (FOKUS) in Berlin, Germany. From 2004 Nguyen Huu Thanh has been working as associate professor in the School of Electronics and Telecommunications, HUST.
Pham Ngoc Nam received B. Eng. degree In Electronics and Telecommunications from Hanoi University of Science and Technology (Vietnam) and M.Sc. Degree in Artificial Intelligence from K.U. Leuven (Belgium) in 1997 and 1999, respectively. He was awarded a Ph.D. degree in Electrical Engineering from K.U.Leuven in 2004. From 2004 until now he has been working at Hanoi University of Science and Technology, Vietnam. His research interests include reconfigurable embedded systems and low-power embedded system design.