Tutorials

Monday, 31 March 2008
9:00 - 12:30

TUT01:   Beyond 3G: Technical Overview of 3GPP Long Term Evolution, 3GPP2 Ultra Mobile Broadband, and WiMAX
Presenter: Hyung G. Myung, QUALCOMM/Flarion Technologies

Course Description : The current 3rd generation cellular wireless systems are evolving into 4th generation. As a pathway to 4G, 3GPP is currently developing Long Term Evolution (LTE) standard and 3GPP2 is working on Ultra Mobile Broadband (UMB) standard. IEEE 802.16-based WiMAX is also gaining attention as a 4G solution. In terms of air interface techniques, all three systems use OFDMA-based multi-carrier modulation, multi-input multi-output (MIMO) techniques, and other advanced features to greatly improve the mobile wireless services.

In this tutorial, we first survey the underlying techniques of the three beyond-3G systems such as OFDMA, SC-FDMA, MIMO, fractional frequency reuse (FFR), and advanced coding. Then, we give technical overview of 3GPP LTE, 3GPP2 UMB, and WiMAX. Specifically, we describe the system architecture, physical layer, and medium access control (MAC) layer of each system.

The tutorial is designed for Research engineers, software development engineers, and systems test engineers in wireless industry as well as students and professors in wireless communications field will benefit from the proposed tutorial which gives a technical insight into the widely-anticipated beyond-3G cellular techniques and standards.

Biography: Hyung G. Myung received B.S. and M.S. degrees in electronics engineering from Seoul National University in 1994 and in 1996, respectively, and the M.S. degree in applied mathematics from Santa Clara University in 2002. He received his Ph.D. degree from the Electrical and Computer Engineering Department of Polytechnic University in January of 2007. From 1996 to 1999, he served in the Republic of Korea Air Force as a lieutenant officer, and from 1997 to 1999, he was with Department of Electronics Engineering at Republic of Korea Air Force Academy as a faculty member. From 2001 to 2003, he was with ArrayComm as a software engineer. During the summer of 2005, he was an assistant research staff at Communication & Networking Lab of Samsung Advanced Institute of Technology. Also from February to August of 2006, he was an intern at Air Interface Group of InterDigital Communications. He is currently with QUALCOMM/Flarion Technologies as a senior engineer. His research interests include DSP for communications and wireless communications.

Monday, 31 March 2008
9:00 - 12:30

TUT02: WiMAX: An Advanced Broadband Wireless System
Presenter: Doru Calin, Bell Labs, Alcatel-Lucent

Course Description: The tutorial is primarily addressing the emerging broadband wireless solutions as specified by the IEEE 802.16 standards, often referred to as WiMAX (Worldwide Interoperability for Microwave Access) technology. WiMAX is an Orthogonal Frequency Division Multiplexing (OFDM) based system which offers promising high spectral efficiency, scalable carrier bandwidth options (e.g. from 1.25MHz to 20MHz), flexible spectrum options (e.g. 2-6 GHz), multiple duplexing options (Time Division Duplexing & Frequency Division Duplexing), various subchannelization options and users mobility thanks to its 802.16e variant, and more recently 802.16m. Technologies such as Hybrid Automatic Repeat Request (H-ARQ), Space Time Coding (STC), Advanced Antenna Systems (AAS), Multiple Input Multiple Output (MIMO) and Space Division Multiple Access (SDMA) have been enhanced to support mobile environments and to improve the broadband access speed. WiMAX supports a rich set of applications via a connection oriented service flow mechanism in both uplink and downlink directions, where service flow parameters can be dynamically managed through Medium Access Control (MAC) messages in order to meet the Quality of Service (QoS) requirements of various service classes. Examples of supported services are Unsolicited Grant Service (UGS), Real-Time Polling Service (rtPS), and Extended Real Time Polling Service (ErtPS) - particularly suitable for real time applications like speech with activity detection (VoIP). While the 802.16 standards provide a rich set of design options and a great deal of flexibility in defining the WiMAX related products, a significant challenge is often encountered in the selection of the most appropriate set of features & parameters and in finding the desirable deployment scenarios.

The tutorial will provide an overview of the key features specific to the 802.16 standards along with insights into the many flexible system design options offered by these technologies.

Biography: Dr. Doru Calin has over twelve years of broad and rich professional experience in the telecommunication industry, wireless arena, cutting edge & applied research (standards, products and services), built at top-notch corporate research labs both in Europe and USA. His current research interests are in the areas of broadband wireless systems design, support of high quality mobile video and VoIP over broadband wireless networks, cross-layer optimization, converged networks and performance analysis. Dr. Calin joined Bell Labs in early 2001 and had main lead responsibilities on a multitude of projects in areas including 4G broadband wireless, 3G wireless network planning and optimization, creation of wireless services and economical analysis, wireless geo-location techniques and wireless ad hoc networks. Prior to joining Bell Labs, he was a researcher at the Institute National des Telecommunications (Telecom INT), France, a technical consultant for Bouygues Telecom (a wireless service provider), and a Senior Research Engineer at Motorola Labs. He holds a M.S. degree in electrical engineering from University of Bucharest, Romania, and received M.S. and Ph.D. degrees in electrical and computer engineering from the University of Versailles. Dr. Calin is a Senior Member of the IEEE and has published over 40 papers in scientific Journals, book chapters and refereed conferences. He holds seven issued patents and has co-authored over fifteen pending patents in the areas of wireless networks and algorithms design. He has received a number of major awards, including the Bell Labs President's Gold Award and Motorola 3GPP standard award.

Tuesday, 1 April 2008
8:30 - 13:00

TUT03: Dynamic Spectrum Access in Cognitive Radio Networks: New Opportunities and Challenges for Efficient Spectrum Utilization
Presenters: Milind M. Buddhikot, Bell Labs, Alcatel-Lucent
Dave Cavalcanti, Philips Research North America
Monisha Ghosh, Philips Research North America

Course Description: Recently, new policies and regulatory rules for more efficient allocation and utilization of radio spectrum have been at the center of discussions involving governments, industry, and academia. The radio spectrum has undoubtedly become a key resource for modern society, and several facts have been fuelling the debate on new spectrum usage models. The recent enormous growth in the wireless industry has come from using only a small part of the spectrum, nominally less than 10% under 3 GHz. There is growing evidence of scarcity and overcrowding in these bands reflected, for example, by the price paid for 3G cellular spectrum. However, measurements have shown that other parts of the spectrum, although allocated, are virtually unused, and known widely as spectrum white spaces. These white spaces are seen as new opportunities for better utilization of the radio spectrum, as well as for enabling new wireless and mobile applications. Cognitive Radios (CRs) are seen as the technology to harness these spectrum white spaces in order to solve to the current low spectrum utilization problem. CR is the key technology that will enable flexible, efficient and reliable spectrum use by adapting the radio's operating characteristics to the real-time conditions of the environment. CRs enable new spectrum usage modes, such as Dynamic Spectrum Access (DSA), where secondary users share the spectrum with primary users on a non-interfering basis. For instance, in the USA, FCC has allowed the fixed access to TV bands under the DSA model and the IEEE 802.22 standard is being developed to enable secondary users to share the TV spectrum without interfering with broadcasting services. But the DSA model itself imposes several challenges, which are being addressed by research, industry, and regulatory communities in a multitude of angles.

This tutorial presents a clear taxonomy of various forms of DSA networks, describes in details various models and identifies required technology capabilities and architectural innovations and policies changes. This tutorial addresses the key building blocks of cognitive radio networks and will highlight the key open research issues for the realization of the DSA model. Furthermore, the tutorial will provide the audience with insights in the current standardization activities as well as the regulatory issues.

Biographies:

Milind M. Buddhikot is a Member of Technical Staff (MTS) in the Networking and Network Management Research Center in Bell Labs, Alcatel-Lucent. His research interests are in the areas of systems, software, protocols and security for dynamic spectrum access networks, integrated public wireless networks, and multi-hop all-wireless mesh networks.   Milind holds a Doctor of Science (D.Sc.) in computer science (July 1998) from Washington University in St. Louis. He has served on program committees of several conferences and currently serves as the Associate Editor of IEEE/ACM Transaction on Networking (TON) and Elsevier's COMNET journal.   Milind is a co-founder of IEEE DySPAN symposium which has emerged as a premier conference on the topic of Dynamic Spectrum Access. He served as a Deputy Chair of IEEE DySPAN 2007. Milind is a co-recipient of the Bell Labs President's Silver Award for outstanding innovations and contributions in March 2003 and Bell Labs Team Award in Dec 2003. His contributions were also cited in the Lucent Chairman's Team Award he received in Year 2006. Milind holds 3 patents and has filed more than 12 patents.   Milind also serves as CO-PI on the U.S. National Science Foundation (NSF) PROWIN and NSF CRI grants and has served on numerous NSF panels.

Dave Cavalcanti (Dave.Cavalcanti@philips.com) is Senior Member Research Staff at Philips Research North America since 2005. He received his PhD in computer science and engineering in 2006 from the University of Cincinnati. He received his M.S. in computer science in 2001 and B.Sc. in electrical engineering in 1999 from the Federal University of Pernambuco, Brazil. His research interests are wireless and mobile networks, cognitive radio networks, integration of heterogeneous wireless networks, MAC layer protocols for WLANs and WPANs, ad hoc, and sensor networks. Dr. Cavalcanti has participated in several standardization groups within IEEE 802, including 802.11, 802.15, and especially the 802.22, where he has been an active contributor. He has published papers in several areas including cognitive radio networks; MAC layer issues in WLANs and WPANs, integration of cellular systems, WLANs, and ad hoc networks; connectivity issues in ad hoc and sensor networks; and performance analysis of QoS in cellular networks. He also delivered tutorials in areas such as integration of heterogeneous wireless networks and Internet simulations.

Monisha Ghosh is a Principal Member of Research Staff at Philips Research currently working on cognitive and cooperative radio networks. She received her B.Tech. in Electronics and Electrical Communication Engineering from the Indian Institute of Technology in 1986, and M.S. and Ph.d. in Electrical Engineering in 1988 and 1991 respectively from the University of Southern California. From 1991 to 1998 she was a Senior Member of Research Staff in the Video Communications Department at Philips Research, where she was involved with digital transmission of high data rate signals over terrestrial, satellite and cable channels. From 1998 to 1999 she was at Lucent Technologies, Bell Laboratories, working on wireless cellular systems. Her research interests include estimation and information theory, error-correction and digital signal processing for communication systems.

Tuesday, 1 April 2008
8:30 - 13:00

TUT04: Emerging Technologies in Wireless LANs: Theory, Design, Deployment
Presenter: Benny Bing, Georgia Institute of Technology

Course Description: Wireless LAN applications have blossomed tremendously over the last few years. What started out as cable replacement for static desktops in indoor networks has been extended to fully mobile broadband applications involving moving vehicles, high-speed trains, and even airplanes. Wi-Fi data rates have also continued to increase from 2 to 54 Mbit/s with current 802.11n proposals topping 600 Mbit/s. This development may eventually render wired Ethernet redundant in the enterprise network. When wireless LANs were first deployed, they give laptop and PDA users the same freedom with data that cellphones provide for voice. However, a wireless LAN need not transfer purely data traffic. It can also support packetized voice and video transmission. People today are spending huge amounts of money, even from office to office, calling by cellphones. With a wireless LAN infrastructure, it costs them a fraction of what it will cost them using cellphones or any other equipment. Thus, voice telephony products based on Wi-Fi standards have recently emerged. A more compelling use of wireless LAN is in overcoming the inherent limitations of wireless WANs. An increasing number of municipal governments around the world and virtually every major city in the U.S. are financing the deployment of mesh networks with the overall aim of providing ubiquitous Internet access and enhanced public services. In addition, cheap phone calls using voice over IP may become one of the biggest benefits of a citywide municipal network. This has led some technologists to predict that eventually we are more likely to see meshed wireless LAN cells that are linked together into one network rather than widespread use of high-powered WAN handsets cramming many bits into expensive and narrow slices of radio spectrum.

This first part of this tutorial will provide participants with a solid understanding of emerging wireless LAN technologies. Specific topics include quality of service, security, high throughput systems, mesh networking, WLAN/cellular interworking, coexistence, radio resource management, cognitive systems, range and capacity evaluation, hotspots, new applications, and public wireless broadband.

Ultra-wideband (UWB) is a license-free spectrum sharing technique where the transmitted RF energy is spread over a wide bandwidth so that interference to existing spectrum users is kept at a minimum. Driven largely by UWB technology, high-speed short-range Wireless Personal Area Networks (WPANs) are expected to proliferate in the coming years. A band-hopping OFDM transmission method developed by the WiMedia Alliance (and standardized by ECMA) has gained significant industry support for deploying high-rate WPANs. One key application envisioned for this technology is cable replacement for Universal Serial Bus (USB) 2.0 devices. In addition, IEEE 802.15 and ECMA have formed task groups aimed at developing new specifications for wireless connectivity in the 60 GHz frequency band. The 60 GHz band offers a large amount of bandwidth (up to 7 GHz) and relaxed transmit power limits, and therefore has the potential to meet the demand for multi-gigabit data rates. However, the need for directionality in millimeter wave operation implies that antenna sector switching and beamforming may be needed although the smaller antenna sizes make these techniques very attractive.

The second part of the tutorial will focus on the PHY and MAC layer methods developed by the WiMedia Alliance. It will also cover several challenges involving 60 GHz WPANs, including hardware and antenna design, multi-channel support, transmit power and interference considerations.

Biography: Dr. Benny Bing is a research faculty member with the School of ECE at the Georgia Institute of Technology. He has published 50 technical papers and 10 books. In early 2000, his book on wireless LANs was adopted by Cisco Systems to launch Cisco's first wireless product, the Aironet Wi-Fi product. He was subsequently invited by QUALCOMM and the Office of Information Technology to conduct customized wireless LAN courses. Dr. Bing is an editor for the IEEE Wireless Communications Magazine. He has guest edited for the IEEE Communications Magazine (2 issues) and the IEEE Journal on Selected Areas on Communications. In October 2003, he was invited by the NSF to participate in a workshop on Residential Broadband. Dr. Bing is a Senior Member of IEEE and an IEEE Communications Society Distinguished Lecturer.

Tuesday, 1 April 2008
9:00 - 12:30

TUT05:   Location-based Services for Mobile
Presenters: Shu Wang, Jungwon Min, Byung K, Yi, LG Electronics Mobile Research

Course Description: Location based services (LBS) for mobile are the services supported by cellular networks for providing mobile users with various location sensitive applications such as E911, Friendfinder, personalized advertisement, etc.   LBS accelerate the convergence of 3C (computer, communication and consumer electronics).   One aspect of LBS market is the rapid growth of GPS market, which is predicted to reach $28.9 billion by 2010 by GPS World. It is believed that LBS is bringing huge revenue opportunities for wireless network operators and service providers. The driving force behind of the growth of LBS market includes regulator's mandates, the development of more efficient location technologies and the expanding of LBS from network operator to third service provider.

In this tutorial, the state of art of mobile location based services (LBS) will be explored in terms of technologies, standards and implementations.   There are five major parts in this proposed tutorial.   Within the first part, an introduction to LBS is presented along with an overview of the growing LBS market. Two examples of LBS, E911 and telematics, are emphasized. In the second part, LBS from a network operator perspective is discussed with a survey of wireless location technologies, the exploration of location management in cellular network, and LBS standards activities. The architecture and operation of the network-dependent LBS control plane of cdma2000 and UMTS networks are reviewed, respectively.   In the third part, the IP-based LBS user plane is discussed from a service provide perspective. An overview of the related standards by OMA and 3GPP2 is given and the principles of LBS user plane are illustrated from multiple application scenarios.   In the fourth part, several implementation issues of LBS are discussed as well as development examples.   In the fifth part, the security and privacy issues of mobile LBS are discussed from an end user perspective along with related practices and regulations. Finally, the further works and standard activities for LBS are presented.

In summary, this tutorial is intended to provide a comprehensive overview of mobile LBS for a wide array of audiences, including LBS services providers, application developers, marketing managers and system researchers, etc. It includes not only the background information and standards activities but also some hand-on development examples.
This presentation is designed for both engineers and managers who have background in cellular communication system with interest on developing location based service.

Biographies:

Shu Wang is a staff research engineer in the research & standards department of LG Electronics Mobile Research LLC. He has is the LGE representatives to the 3GPP2 Technical Specification Group C Working Group 3 and 4. Before this, he worked with LinkAir Communications, Harris Broadcast Corp., and UCLA wireless media lab.

Jungwon Min is a senior research engineer at the research and standards department of LG Electronics Mobile Research LLC. Her interest covers from source coding to application layer in mobile communication technologies and related standards including speech coding and location service. She is the representative of LG Electronics to the Work Group 1 of 3GPP2 Technical Specification Group. She graduated from Seoul National University with BS in electrical engineering, and also has MS degrees in EECS and in Technology and Policy from MIT.

Byung K. Yi , Dr. Yi is a senior executive vice president of LG Electronics. He also is a director of TIA and a former chair of 3GPP2 Technical Specification Group C.

Soonyil Kwon , Dr. Kwon is the director of the research and standards department of LG Electronics Mobile Research LLC. He also is a vice chair of 3GPP2 Technical Specification Group C.

Tuesday, 1 April 2008
9:00 - 12:30

TUT06: Coding for MIMO Communication Systems
Presenters: Tolga M. Duman, Arizona State University
Ali Ghrayeb, Concordia University

Course Description: The demand for voice and data transmission over wireless channels is increasing at a tremendous pace. Unfortunately, the characteristics of the wireless channel (e.g., fading and interference) impose obstacles for satisfying this demand. The single most effective technique to accomplish reliable communication over a fading channel is "diversity" which attempts to provide the receiver with independently faded copies of the transmitted signal. Channel coding may also be used to provide (a form of time) diversity for immunization against the impairments of the wireless channel. In addition, various diversity techniques may be combined to further improve the system performance in a wireless environment. Space-time coding which combines channel coding with space diversity is a recent example of combining different diversity techniques and has proven to be effective in providing high data rates over fading channels.

This tutorial presents various developments on coding for MIMO communication systems in a comprehensive manner.   The tutorial is geared to students, researchers and industry affiliations, and individuals working for government, military, science and technology institutions and would like to learn more about error control coding for multiple antenna communication systems.

Biographies:

Tolga M. Duman received a B.S. from Bilkent University in 1993, M.S. and Ph.D. degrees from Northeastern University in 1995 and 1998, respectively, all in electrical engineering. He joined the Electrical Engineering faculty of Arizona State University as an assistant professor in August 1998, where he is currently an associate professor. Dr. Duman's current research interests are in digital communications, wireless and mobile communications, channel coding, turbo codes, coding for recording channels, and coding for wireless communications. Dr. Duman published about 40 journal papers and over 70 refereed conference papers in these areas. He is the recipient of the National Science Foundation Career Award, IEEE Third Millennium Medal, and IEEE Benelux Joint Chapter best paper award (1999). He is a member of IEEE Information Theory and Communication Societies. He is an editor for IEEE Transactions on Communications, and for IEEE Transactions on Wireless Communications.

Ali Ghrayeb received a Ph.D. in electrical engineering from the University of Arizona in May 2000. From 2000 to 2002, he was an assistant professor in the Electrical Engineering Department at the American University of Sharjah, UAE. Since August 2002, he has been with the Department of Electrical and Computer Engineering, Concordia University, Montreal, Canada, where he is currently an associate professor. His research interests include digital and wireless communications, channel coding, turbo codes, space-time codes, linear and nonlinear equalization, and coding for data transmission and storage. He has published over 80 refereed technical articles in the above research areas. He is a member of IEEE Communication and Vehicular Technology Societies. He is an associate editor for IEEE Transactions on Vehicular Technology and Wiley Wireless Communications and Mobile Computing Journal.

Tuesday 1 April 2008
9:00 - 12:30

TUT07:   IP-based Mobility Protocols and Optimization Framework
Presenter: Ashutosh Dutta, Telcordia Technologies, Inc.

Course Description: Several IP-based mobility protocols, such as MIPv4, SIP, HIP, MIPv6 and Proxy MIPv6 have been designed to take care of mobility at different layers such as network layer, application layer and localized mobility. There are also corresponding optimization techniques for each of these mobility protocols designed to provide seamless service to the mobile users. However, there is no formal mechanism to analyze a mobility event. Also, the mechanisms and design principles needed to provide optimized handovers in the context of mobile Internet services are lacking.

As part of this tutorial, we will provide a formal analysis of handover in the mobile wireless Internet and investigate the handoff components that contribute to performance degradation. We will describe a systems model that can characterize a mobility event and explain the basic primitive handoff operations, such as network discovery, network selection, configuration, authentication, encryption, routing, and binding update. This tutorial will apply this framework to analyze few candidate mobility protocols at each layer and describe their associated optimization techniques. This systematic framework can provide a set of guidelines and design rules for optimizing the handoff components under various operating environment including ad hoc networks and mobile wireless Internet. Several mobility optimization efforts within different standards bodies, such as IRTF MOBOPTS WG, IETF MIPSHOP WG, IEEE 802.21, and 3GPP SAE will be covered. This tutorial will also highlight author's personal experience in implementing several mobility optimization techniques including experimental results from case studies in IMS/MMD and 4G mobility testbeds.

Biography: Ashutosh Dutta   (Senior   Member   of   IEEE and ACM) is   currently   a   Senior Scientist    in   Telcordia    Technology's   Internet    Network Research Laboratory   with   an   emphasis   on mobility optimization for the wireless Internet. For the past twenty years, he has dealt with mobile and wireless systems, and has been responsible for designing, implementing and managing many wireless and mobile computing related projects.   Prior to joining Telcordia Technologies, Inc., Ashutosh was the Director of Central Research Facilities in Columbia University from   1989 to 1997 and worked as computer engineer with TATAs from 1985 to 1987. His research interests include session control protocols, streaming multi-media, wireless multicast, and mobile wireless Internet. Ashutosh is the recipient of the 2000 and 2002 Telcordia CEO Award, winner of SAIC's ESTC 2002, IEEE EIT 2005 best paper award. Ashutosh was awarded the IEEE PCJ chapter leadership award for 2005. He has published more than 60 conference and journal papers and two book chapters. Ashutosh has a BS in EE (1985), MS in Computer Science (1989), and is currently finishing his part-time Ph.D at Columbia University. Ashutosh currently serves as the vice chair of IEEE Princeton and Central Jersey section.

Thursday, 3 April 2008
2:00 - 5:30

TUT08: Multi-User OFDM: A Half Day Recital of the Classic and of the Avantgarde
Course Description: Download pdf version >
Presenter: Lajos Hanzo, University of Southampton

Course Description: Space-time coded adaptive OFDM/MC-CDMA: Following a brief historical perspective, the importance of versatile multi-standard operation is emphasized and its is demonstrated that symbol-by-symbol adaptive OFDM modems have the potential of counteracting the near instantaneous channel quality variations of wireless channels.  Space-time or space-frequency coding also mitigates the channel quality variations, but their benefits erode, when the antennas experience correlated shadow-fading in the context of both OFDM and MC-CDMA. Only the combination of adaptive modulation aided MIMOs or cooperative distributed MIMO-aided OFDM/MC-CDMA modems have the ability to counteract the effects of correlated fading.

Multi-user decision-directed channel estimation: A prerequisite for using high-integrity coherent detection at the receiver is the availability of reliable channel transfer factor estimates. Robust parallel interference cancellation (PIC) assisted decision-directed multi-user channel estimation (DDCE) will be shown to approach the achievable performance of perfect channel estimation.

Multi-user detection: When the number of bits/modulated symbols is high, as in 64QAM, for example and the number of MIMO-elements is also considerable, optimum Maximum Likelihood (ML) detection imposes an excessive complexity and hence reduced-complexity near-ML soft-output Sphere-Detection (SD) methods will have to be employed.  We will also consider unorthodox Genetic Algorithm (GA) aided near-ML solutions. Genetic algorithm assisted joint channel estimation and complex sphere decoding for SDMA-aided rank-deficient multi-user OFDM will be another avantgarde techniques to be discussed.

However, compared to Single-Input-Single-Output (SISO) systems, channel estimation in the MIMO scenario becomes more challenging, owing to the increased number of independent transmitter-receiver links to be estimated. In the context of the Bell Layered Space-Time architecture (BLAST) or Space Division Multiple Access (SDMA) multi-user MIMO OFDM systems, none of the known channel estimation techniques allows the number of users to be higher than the number of receiver antennas, which is often referred to as a "rank-deficient" scenario, owing to the constraint imposed by the rank of the MIMO channel matrix.

Minimum BER multiuser detection for MIMO-OFDM: The family of minimum bit error rate (MBER) multiuser detectors (MUD) is capable of outperforming the classic minimum mean-squared-error (MMSE) MUD in terms of the achievable BER owing to directly minimizing the BER cost function. We will also show that the MBER MUD is capable of supporting significantly more users in so-called rank-deficient scenarios than the number of receiver antennas available, while outperforming the MMSE MUD.

Biography: During his 30-year career, Lajos Hanzo , FRAEng, DSc, FIEEE, FIEE has held various academic and research positions in Hungary, Germany and the UK. Since 1986 he has been with the University of Southampton, where he holds the Chair of Telecommunications. Over the years he has co-authored 15 books on mobile radio communications, published in excess of 700 research papers. Lajos has also been awarded a number of distinctions and he is an IEEE Distinguished Lecturer of both the Communications and the Vehicular Technology Society. For further information on research in progress and for associated papers and book chapters please refer to http://www-mobile.ecs.soton.ac.uk Lajos presented short courses for example at the following IEEE conferences: ICCS'94 in Singapore; ICUPC'95 in Tokyo; ICASSP '96 in Atlanta, USA; PIMRC'96 in Taipei, Taiwan; ICASSP'96 in Atlanta; ICCS'96 in Singapore; VTC'97 in Phoenix, USA; PIMRC'97 Helsinki, Finland; VTC'98, Ottawa, Canada; Globecom'98 Melbourne, Australia; VTC'99 Spring Houston, USA; EURASIP Confer- ence'99, June, 1999, Krakow, Poland; VTC'99 Fall Amsterdam, The Netherlands; VTC'2000 Spring Tokyo, Japan; VTC'2001 Spring Rhodes, Greece; Globe- com'2000 San Francisco, USA; Globecom'2001 San Antonio, USA; ATAMS'2001 Krakow, Poland; Eu- rocon'2001, Bratislava, Slovakia; VTC'2002 Spring Birmingham Alabama, USA; VTC'2002 Fall Vancou- ver, Canada; ICC'2002, New York, USA; Wireless'02, Calgary, Canada; WPMC'02 Honolulu, Hawaii; ATAMS '2002, Krakow, Poland; WCNC'03 New Orleans, USA; VTC'2003 Spring, Jeju Island, Korea; PIMRC'2003, Beijing, China; VTC'03 Fall Orlando, USA; VTC'04 Spring, Milan, Italy; EuropeanWireless Conference'04, Barcelona, Spain; ICC'04, Paris, France; EUSIPCO'04, Vienna, Austria; European Wireless Conference'2005, Nicosia, Cyprus; VTC'05 Spring Stockholm, Sweden; VTC'05 Fall, Dallas, USA; WPMC'05 Aalborg, Den- mark; VTC'06 Spring Melbourne, Australia; ICC'06 Istanbul, Turkey; VTC'06 Fall, Montreal, Canada; VTC'07 Spring, Dublin, Ireland; ICC'07, Glasgow, Scotland; IST'07, Budapest, Hungary; ColCom'07, Bogota, Colombia; VTC'07 Fall, Baltimore, USA; IC- SPC'07, Dubai.