Keynotes

Keynote 1

 Title: Cooperative Wireless Communications

Date: July 2nd, 2013

 

  Prof.  Lajos Hanzo

School of ECS, University of Southampton

UK

Abstract: In the early days of wireless communications the research community used to view multipath-induced dispersion as an undesirable propagation phenomenon, which could only be combated with the aid of complex channel equalizers. The longer the Channel Impulse Response (CIR) was, the more complex the channel equalizer became. However, provided that the complexity of a sufficiently high-memory channel equalizer was affordable, the receiver could benefit from the fact that the individual propagation paths faded independently. To leaborate a little further, even if one of the paths was experiencing a high attenuation, there was a good chance that some of the other paths were not, which led to a potential diversity gain.However, if the channel does not exhibit several independently fading paths, techniques of artificially inducing diversity may have to be sought. A simple option is to employ a higher direct-sequence spreading factor, which results in a higher number of resolvable multipath components and hence in an increased diversity gain. Naturally, this is only possible if either the available bandwidth may be extended according to the spreading factor or the achievable bitrate is reduced by the same factor. A whole host of classic diversity combining techniques may be invoked then for recovering the original signal.An alternative technique of providing multiple independently faded replicas of the transmitted signal is to employ relaying, distributed space-time coding or some other cooperation-aided procedure, which is the subject of this course. One could also view the benefits of decode-and-forward based relaying as receiving and then flawlessly regenerating and re-transmitting the original transmitted signal from a relay – provided of course that the relay succeeded in error-freely detecting the original transmitted signal.This course reviews the current state-of-the-art and proposes a number of novel relaying and cooperation techniques. An important related issue is the availability or the absence accurate channel information, which leads to the concept of coherent versus non-coherent detection at the realys and at the destination. Similarly, the related initial synchronization issues also have to be considered.Naturally, when using hard-decisions in the transmission chain, we discard valuable soft-information, which results in an eroded performance, albeit also reduces the complexity imposed. Hence the hard- versus soft-decoding performance tradeoff will also be explored in the course, along with the benefits of interleaved random space-time coding invoked for multi-source cooperation.Another important aspect of cooperative communications is constituted by the so-called Cooperative Multi-Point Processing (COMP) technique, which jointly processes all the signals gleaned at all the base-stations (BSs), which will also be covered by the proposed course. In most existing studies he interconnection of all the BSs is assumed to be perfect. By contrast, in this course realistic dispersion-contaminated optical interconnections will be considered.
Short Bio: Lajos Hanzo (http://www-mobile.ecs.soton.ac.uk) FREng, FIEEE, FIET, Fellow of EURASIP, DSc received his degree in electronics in 1976 and his doctorate in 1983. In 2009 he was awarded the honorary doctorate “Doctor Honoris Causa” by the Technical University of Budapest. During his 35-year career in telecommunications he has held various research and academic posts in Hungary, Germany and the UK. Since 1986 he has been with the School of Electronics and Computer Science, University of Southampton, UK, where he holds the chair in telecommunications. He has successfully supervised 80 PhD students, co-authored 20 John Wiley/IEEE Press books on mobile radio communications totalling in excess of 10 000 pages, published 1294 research entries at IEEE Xplore, acted both as TPC and General Chair of IEEE conferences, presented keynote lectures and has been awarded a number of distinctions. Currently he is directing an academic research team, working on a range of research projects in the field of wireless multimedia communications sponsored by industry, the Engineering and Physical Sciences Research Council (EPSRC) UK, the European IST Programme and the Mobile Virtual Centre of Excellence (VCE), UK. He is an enthusiastic supporter of industrial and academic liaison and he offers a range of industrial courses. He is also a Governor of the IEEE VTS. Since 2008 he has been the Editor-in-Chief of the IEEE Press and since 2009 a Chaired Professor also at Tsinghua University, Beijing. For further information on research in progress and associated publications please refer to http://www-mobile.ecs.soton.ac.uk

Keynote 2

 Title: How much can we gain by exploiting buffers in wireless relay networks?

Date: July 3rd, 2013

 

Prof. Robert Schober

Electrical and Computer Engineering Dept

University of British Columbia

Canada

Abstract:
Wireless relays will play an important role in future wireless
communication networks. This talk will focus on the new concept of
buffer-aided relaying. In conventional relay protocols, the schedule
of when the different nodes in the network transmit is pre-fixed and
non-adaptive. In contrast, buffer-aided relaying protocols exploit the
additional degrees of freedom introduced by relays with buffers and
employ an adaptive transmission schedule which takes into account the
quality of the different links in the network. We will show that this
new approach leads to substantial performance improvements in relay
networks with fading links. In particular, buffer-aided relays enable
significant gains in throughput as well as outage and error
probability at the expense of an increased delay. These gains are
introduced by adaptive link selection and/or adaptive transmission
mode selection. We will first introduce the basic concept of
buffer-aided relaying using the example of a simple three node one-way
relay network before considering more complex networks such as
relay-selection networks, multi-antenna relay networks, and two-way
relay networks.We show that in some cases buffer-aided relaying protocols can double
both the diversity gain and the throughput compared to conventional
relaying protocols. Furthermore, in multi-antenna networks,
buffer-aided relaying can also help to overcome the performance loss
that half-duplex relays typically suffer compared to full-duplex
relays.
Short Bio: Robert Schober received the Diplom (Univ.) and the Ph.D. degrees in
electrical engineering from the University of Erlangen-Nuermberg in
1997 and 2000, respectively. From May 2001 to April 2002 he was a
Postdoctoral Fellow at the University of Toronto, Canada, sponsored by
the German Academic Exchange Service (DAAD). Since May 2002 he has
been with the University of British Columbia (UBC), Vancouver, Canada,
where he is now a Full Professor. Since January 2012 he is an
Alexander von Humboldt Professor and the Chair for Digital
Communication at the Friedrich Alexander University (FAU), Erlangen,
Germany. His research interests fall into the broad areas of
Communication Theory, Wireless Communications, and Statistical Signal
Processing.Dr. Schober received several awards for his work including the 2002
Heinz Maier–Leibnitz Award of the German Science Foundation (DFG), the
2004 Innovations Award of the Vodafone Foundation for Research in
Mobile Communications, the 2006 UBC Killam Research Prize, the 2007
Wilhelm Friedrich Bessel Research Award of the Alexander von Humboldt
Foundation, the 2008 Charles McDowell Award for Excellence in Research
from UBC, a 2011 Alexander von Humboldt Professorship, and a 2012
NSERC E.W.R. Steacie Fellowship. In addition, he received best paper
awards from the German Information Technology Society (ITG), the
European Association for Signal, Speech and Image Processing
(EURASIP), IEEE WCNC 2012, IEEE Globecom 2011, IEEE ICUWB 2006, the
International Zurich Seminar on Broadband Communications, and European
Wireless 2000. Dr. Schober is a Fellow of the Canadian Academy of
Engineering, a Fellow of the Engineering Institute of Canada, and a
Fellow of the IEEE. He is curre

Keynote 3

 Title Wireless MAC layer reconfigurability
(from a software-defined networking perspective)

Date: July 4th, 2013

 

Prof. Giuseppe Bianchi

University of Roma

Italy

Abstract:
Wireless MAC protocols have been traditionally deployed as monolithic, one-size-fits-all, standards. In contrast, flexibility and programmability of wireless devices appear crucial to foster innovation and customization, so as the accommodate the need of customers (and applications) for personalized delivery and quality of experience, and overcome performance limitations by smartly exploiting opportunistically available spectrum and resources in dense environments. Moreover, wireless protocols originally designed for general scenarios are now stretched so as to fit the very diverse needs of niche contexts and deployments (industrial automation, domotics, military, emergency, machine to machine, etc).
In this talk, we revisit very recent advances in the field of wireless MAC programmability. We specifically focus on programming approaches which do not require open source network interface cards, but still permit dynamic MAC protocol stack reconfiguration in negligible (sub-microsecond) time. This is accomplished by decoupling a set of “dumb” (hard-coded) primitives, from a third-party provided “smart” MAC protocol logic, provided in the form of (extensible) finite state machines which formally specify how such primitives shall be executed. We argue that such ideas and approaches, although technically different and relying on different abstractions, appear to enrich the wireless access domain with software-defined networking concepts that are today leading the data centers and wired networks innovation.
Short Bio:  Giuseppe Bianchi is Full Professor of Telecommunications at the School of Engineering of the University of Roma Tor Vergata, current chair of the relevant Bachelor/Master teaching programme in Internet Technology engineering, and former chair of the Telecommunications and microelectronics PhD programme. His research activity, documented in about 180 peer-reviewed papers accounting for more than 9300 citations, spans several areas including wireless LANs, privacy and security, design and performance evaluation of broadband networks, network monitoring. His analytical models concerning the performance analysis of 802.11 WLAN networks are well known in the research community. He is editor for IEEE/ACM Trans. on Networking and Elsevier’s Computer communication, and area editor for IEEE Trans. on Wireless Communications. He has (co-)chaired more than 10 international IEEE/ACM conferences/workshops, the next major one being IEEE Infocom 2014 (technical co-chair). He has been involved in several European funded project, with general and/or technical coordination roles for the projects FP6-DISCREET (privacy in smart environments), FP7-PRISM (privacy-preserving network monitoring), FP7-DEMONS (distributed network monitoring) and FP7-FLAVIA (programmable wireless systems).