IEEE VTC Spring 2002 Tutorials
Birmingham, AL, May 6, 2002
- Multiuser Detection and Decoding in CDMA (full-day)
- Wireless IP over 3G and beyond Mobile Networks(full-day)
- Smart antennas and MIMO systems (full-day)
- Joint Physical and Network Layer
Optimisation of Wireless Systems (full-day)
- WCDMA for UMTS (full day)
- Modelling and analysis of wireless communications systems
(full-day)
- Mobile Ad hoc Networks (half-day)
- Core Enabling Technologies For The Mobile Internet: Systems With Global And Limited Mobility (half-day)
- UWB Radio Technology in Wireless PANs (half-day)
- Orthogonal Frequency Division Multiplexing for Wireless Communications (half-day)
Tutorial 1: Multiuser Detection and Decoding in CDMA
Full-day
Lars K. Rasmussen
Over the past decade, much work has been done in the area of
multiuser detection (MUD). These efforts have now led to a more
thorough understanding of the principles at play and thus to a
structured framework for design and analysis. Within the past few
years, joint decoding of coded CDMA has also matured and there is
now a firm understanding of iterative decoding techniques based on
turbo principles. This tutorial is intended to provide an overview
of the fundamental theory and current understanding of joint
multiuser detection and decoding in CDMA.
Basic discrete-time models for CDMA is developed and used as the
foundation for presenting the variety of MUD strategies. The
presentation of the detection techniques is based on
maximum-likelihood and MMSE optimality criteria where we will go
into details of constrained and unconstrained detection. These
detector structures constitute the theoretical foundation for
multiuser detection upon which iterative strategies can be applied
for efficient implementation. Interference cancellation can thus
be seen as an iterative implementation of theoretically
well-founded structures. Linear detection strategies, in turn,
have proven very effective in an iterative decoding structure for
coded CDMA. Such structures are discussed in some detail and they
clearly represent the future of multiuser technologies.
The tutorial will focus on the optimal ML detector, linear
detectors, trellis-search detectors and especially on iterative
interference cancellation strategies as they are particularly
interesting for practical implementation. This provides a broad
foundation within the area upon which a detailed discussion of
iterative joint decoding strategies for coded CDMA is based. Joint
decoding of coded CDMA is discussed in some detail and especially
iterative joint decoding based on turbo principles and linear MUD
strategies are considered.
Outline
- Development of basic concepts and models
- Discrete-time models
- Conventional detection
- Philosophy behind multiuser detection
- One-shot detection
- Conventional detection
- Optimal (0,1)-constrained ML detection
- Linear detection
- Limited trellis search detection
- Relaxation and heuristic methods
- Iterative detection (multistage interference cancellation)
- Concepts of interference cancellation
- Interference cancellation structures
- Linear interference cancellation
- Weighted linear interference cancellation
- Non-linear interference cancellation
- Iterative joint decoding of coded CDMA
- Interference cancellation
- Iterative MMSE filtering
- Recursive Bayesian filtering
Intended Audience
This tutorial is intended for R & D engineers, academics and
graduate students with an interest in detection and decoding
strategies for CDMA. The tutorial will provide an overview of
detection strategies and therefore only a general understanding of
digital communications and linear algebra is required.
Biography
Lars K. Rasmussen was born on March 8, 1965 in Copenhagen,
Denmark. He got his M.Eng. degree in 1989 from the Technical
University of Denmark, and his Ph.D. degree from Georgia Institute
of Technology (Atlanta, Georgia, USA) in 1993. From 1993 to 1995,
he was at the Mobile Communication Research Centre, University of
South Australia as a Research Fellow. From 1995 to 1998 he was
with the Centre for Wireless Communications at the National
University of Singapore as a Senior Member of Technical Staff. He
then spent 3 months at the University of Pretoria, South Africa as
a Visiting Research Fellow before spending 3 years in the
Department of Computer Engineering at Chalmers University of
Technology in Gothenburg, Sweden from 1999 to 2002 as an Associate
Professor. Since February 2002, he has been at the Institute for
Telecommunications Research, University of South Australia,
Adelaide, Australia as professor of telecommunications and head of
the Systems and Multiple Access group.
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Tutorial 2: Wireless IP over 3G and beyond Mobile Networks
Full-day
Abbas Jamalipour, University of Sydney, Australia
This tutorial discusses implementation of wireless Internet
over next generation cellular systems and explains technical
implications toward an Internet access evolution from fixed into
mobile environment. Internet-based applications are the emerging
source of traffic in future wireless networks and broadband wireless
networks should consider the Internet as the primary service. The
tutorial explains current and future mobile and wireless Internet
technologies, and directs up-to-date trends of the two leading
technologies; i.e. Internet and cellular, into next generation
wireless networks such as UMTS, wideband CDMA, and beyond. The
tutorial gives audiences all knowledge they need to start and/or
continue research and development projects and to plan for wired and
wireless networking.
The tutorial also provides audiences with the state-of-the art
information on the third generation wireless networks and beyond
including trends in new era of wireless telecommunications,
standardization activities, global network harmonization, and all-IP
network. The tutorial will discuss the importance of the traffic
management, mobility and location management, protocol enhancement for
interworking of heterogeneous wired and wireless networks, and the
quality of service in future generations of wireless
networks. Concepts of new network architectures for future wireless IP
networks will be demonstrated in this tutorial.
Biography
Abbas Jamalipour has been with the School of Electrical and
Information Engineering at the University of Sydney, Australia, since
1998, where he is responsible for teaching and research in wireless
data communication networks and satellite systems. He received his
Ph.D. in Electrical Engineering from Nagoya University, Japan, in
1996. His current areas of research include wireless broadband data
communications and wireless IP networks, mobile and satellite
communications, traffic modeling and congestion control. He is the
author of the first technical book on LEO satellites, Artech House
1998. He is a Senior Member of IEEE. He is recipient of a number of
technology and paper awards and author for four technical books and
many papers in IEEE and IEICE Transactions and Journals as well as in
international conferences. He was an organizing committee member for
GLOBECOM'98 and is the Secretary to the Satellite and Space
Communications Committee of the IEEE ComSoc and a guest editor to two
special issues on 4G networks in IEEE magazines. He was a symposium
organizer for the IEEE Globecom2001, San Antonio, Texas and is a
technical editor to the IEEE Personal Communications Magazine.
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Tutorial 3: Smart antennas and MIMO systems
Full-day
Andreas F. Molisch, AT&T Labs - Research, Middletown, NJ
Juha Laurila, Nokia, Helsinki, Finland
Klaus Hugl, TU Wien, Austria
Ernst Bonek, TU Wien, Austria
Smart antennas are one of the most promising methods for increasing
capacity of mobile radio systems, both for upgrading second-generation
systems and for use in third- and fourth generation systems. The
tutorial will give a comprehensive overview over all relevant aspects of
smart antenna systems. Measurement and modeling of the spatial
propagation characteristics, which form the physical basis for any smart
antenna system are discussed as well as signal processing algorithms,
hardware architectures, experiences from the construction of an actual
testbed, and capacity issues. Also MIMO systems (multiple antennas at
base station and mobile station), the most recent, exciting development
in smart antennas, are discussed.
Biographies
Andreas F. Molisch received the Dipl. Ing., Dr. techn, and habilitation
degrees from the Technical University Vienna in 1990, 1994, and 1999,
respectively. From 1991 to 2001, he was with the Institut für
Nachrichtentechnik und Hochfrequenztechnik (INTHFT) of the TU Vienna,
most recently as associate professor. Since 2001, he has been with AT&T
Laboratories - Research. His current research interests are MIMO
systems, smart antennas, characterization of mobile radio channels, and
wideband systems. He is senior member of the IEEE, and (co)author of two
books, five book chapters, some 50 journal papers, and numerous
conference contributions.
Juha Laurila received the M.Sc. (E.E.) degree from the Helsinki
University of Technology, Finland in 1995 and Dr.Tech. degree from the
Vienna University of Technology, Austria in 2000. Since 2000 he has been
working as a senior research engineer at Nokia Research Center (Radio
Communications Laboratory) Helsinki, Finland. His current research
activities are related to the utilisation of multiple antenna techniques
in cellular systems.. J.Laurila has authored or co-authored more than 20
international reviewed journal and conference publications.
Ernst Bonek was born in Vienna, Austria, 1942. He received the Dipl.
Ing. And Dr.techn. degrees from the Technische Universität (TU) Wien. In
1984, he was appointed Full Professor of Radio Frequency Engineering at
the TU Wien. His present field of interest is mobile communications at
large.Recent contributions concern the characterization of mobile radio
channels,cordless telephony, and advanced antennas and receiver designs.
Altogether, he authored or co-authored some 100 journal publications. He
holds three patents, and seven more are pending. His current positions
in scientific organizations include: chairman of the "Antennas and
Propagation" working group in the European research initiative "COST
273"; Area Editor of "Wireless Personal Communications"; Chairman of
URSI (Union of radio scientists) commission, Senior Member of IEEE.
Klaus Hugl was born in Austria, in 1974. He received his Dipl. Ing. with
highest honors from Technische Universität Wien (TU-Wien) in 1998. He
currently works towards his PhD at Institut für Nachrichtentechnik und
Hochfrequenztechnik (INTHF) of TU-Wien. His research interests are smart
antennas, especially downlink beamforming and spatial channel
modeling/characterization.
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Tutorial 4: Joint Physical and Network Layer Optimisation of Wireless Systems: Smart Antennas, Turbo Coding, Space-Time Coding,
Adaptive Transceivers, Intelligent Networking
and 'all that' for Improved QoS
Full-day
Lajos Hanzo
University of Southampton
This overview is based on the Wiley/IEEE Press monographs ``Blogh,
Hanzo: Third-Generation Systems and Intelligent Wireless Networking:
Smart Antennas and Adaptive Modulation''; ``L. Hanzo, et al.: Adaptive
Wireless Transceivers: Turbo-Coded, Turbo-Equalised and Space-Time
Coded TDMA, CDMA and OFDM systems''; ``L. Hanzo, et al.: Turbo Coding,
Turbo Equalisation and Space-Time Coding'' (for sample chapters and
full contents please refer to https://www-mobile.ecs.soton.ac.uk). The
short course provides an insight into the effects of turbo-coded,
turbo-equalised and space-time coded adaptive TDMA, CDMA and OFDM
transceivers as well as smart antennas and a range of other efficient
networking techniques on the achievable teletraffic capacity of
wireless systems. This research-oriented presentation considers the
joint benefits of both physical and network-layer performance
enhancement techniques.
More specifically, conventional systems would drop a call in progress,
if the communications quality falls below the target quality of
service and it cannot be improved by handing over to another physical
channel. By contrast, the adaptive transceivers of the near future are
expected to simply 'instantaneously drop the throughput, rather than
dropping the call' by reconfiguring themselves in a more robust mode
of operation. It is demonstrated that the proposed beam-forming
and adaptive transmission techniques may double the expected
teletraffic capacity of the system, whilst maintaining the same
AVERAGE performance as their conventional fixed-mode counterparts.
Whilst this overview is ambitious in terms of providing a
research-oriented outlook, potential attendees require only a modest
background in wireless communications. Network operators, service
providers, managers and researchers embarking on the joint
optimisation of the physical and network layer may find the coverage
of the presentation beneficial.
Biography
The lecturer of this course is Lajos Hanzo. During his
26-year carreer he 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.
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Tutorial 5: Title of the tutorial: "WCDMA for UMTS"
Full-day
Harri Holma, Nokia Networks, IP Mobility Networks
This tutorial covers the main parts of the WCDMA FDD/3GPP standard,
its utilization and its performance. The main focus is on the physical
layer standard with a short introduction on the radio access network
architecture. The coverage and capacity of the WCDMA air interface is
presented with a number of simulation results and with some
measurement results. The packet access is covered and the latest
development of High Speed Downlink Packet Access (HSDPA) is
presented. The integration of GSM/EDGE and WCDMA networks is
described.
Outline
- Introduction to WCDMA
- Background and Standardization
- Radio Access Network Architecture
- Physical Layer
- Packet Access Including HSDPA
- Capacity and Coverage
- Radio Resource Management
- Integration with GSM/EDGE
Biography
HARRI HOLMA joined Nokia Research Center 1994 and received his
M.Sc. from Helsinki University of Technology 1995. Since 1994 he has
been working with 3rd generation WCDMA air interface with special
interest on radio network performance. In January 1998 he joined Nokia
Network and he is currently working as Senior Specialist with
EDGE/WCDMA radio network performance area. Mr. Holma has edited the
book "WCDMA for UMTS", and has been an author in three chapters in the
book "WCDMA for 3rd Generation Mobile Communications" by Ojanperä and
Prasad.
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Tutorial 6: Modelling and analysis of wireless communications systems
Full-day
A. Annamalai, The Bradley Dept. of Elect. and Comput. Eng., Virginia
Tech.
C. Tellambura, SCSSE/Faculty of Information Technology, Monash
University
Demand for user mobility has sparked tremendous growth in wireless
personal communication systems. Owing to the growing interest in
ubiquitous highspeed wireless communications and testimonies to the
rapidly increasing penetration of the wireless technology around the
globe, world wide research efforts into the performance of wireless
systems have grown rapidly. Therefore, the overall aim of this
tutorial is to provide a comprehensive and timely coverage of
performance analysis techniques on fading channels. The performance of
various mobile and wireless systems has been analyzed by many authors
over the last four decades. Recent developments, tailored towards
unified analysis of wireless communications systems, have shown exact
solutions to some outstanding problems in wireless and digital
communications. In this tutorial, we will review both latest
developments as well as more classical results. The coverage of this
tutorial is quite broad encompassing review of mathematical tools and
their applications to performance analysis of diversity systems for
all common binary and Mary signals over generalized fading channels,
evaluation of pairwise error probability for coded modulation with and
without channel state information, outage analysis for cellular mobile
radio, and investigation into low-complexity receiver structures and
packet combining strategies.
Biographies
A. Annamalai (M'94) received his B.Eng. degree with the
highest distinction from the University of Science of Malaysia in
1993, and M.A.Sc. and Ph.D. degrees from the University of
Victoria in 1997 and 1999, respectively, all in electrical and
computer engineering. Currently, he is with the Bradley Department
of Electrical and Computer Engineering of Virginia Tech as an
Assistant Professor. He was an RF design engineer with Motorola
from 1993-1995. Dr. Annamalai's current research interests are in
high-speed data transmission over wireless links, adaptive
modulation and coding, smart antenna, OFDM and wireless
communication theory. Recently, he was awarded the 2001 IEEE Leon
K. Kirchmayer Prize Paper Award for his work on diversity systems.
He is an Editor for the IEEE Journal on Selected Areas in
Communications (Wireless Communications Series), an Associate
Editor for the IEEE Communications Letters and is the Technical
Program Chair of the IEEE VTC2002 (Fall).
C. Tellambura received his B.Sc. degree with honors from the
University of Moratuwa, Sri Lanka, in 1986, M.Sc. in electronics
from the King's College, UK, in 1988, and Ph.D. in electrical
engineering from the University of Victoria, Canada, in 1993. He
was a post-doctoral research fellow with the University of
Victoria and the University of Bradford. Currently, he is a Senior
Lecturer at Monash University, Australia. He is an Editor for the
IEEE Transactions on Communications and the IEEE Journal on
Selected Areas in Communications (Wireless Communications Series).
His research interests include coding, communications theory,
modulation, equalization and wireless communications.
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Tutorial 7: Mobile Ad hoc Networks
Half-day
Elizabeth M. Belding-Royer
and Sung-Ju Lee
Ad hoc networking, while not a new idea, has
received a lot of attention in the past few years. As such, numerous
new protocols have been developed that are revolutionizing the way
this communication works. This tutorial will educate the attendees on
the fundamentals of ad hoc networking technology and research, as well
as the state of the art in this area. We will begin the tutorial with
a description of the characteristics of wireless ad hoc networks that
distinguish them from their wired and cellular network counterparts.
We will then cover recent unicast and multicast routing approaches in
great detail. In addition, we will cover Bluetooth and enabling
technologies such as IEEE 802.11. We will conclude with recent
implementation and standardization efforts, as well as directions for
future research. Attendees will gain an in-depth understanding of ad
hoc networking issues, as well as of many of the proposed solutions
that are likely to be, or have already been, adopted by industry.
Biographies
Elizabeth M. Belding-Royer is an Assistant Professor in the Department
of Computer Science at the University of California, Santa Barbara.
She completed her Ph.D. in Electrical and Computer Engineering at UC
Santa Barbara in 2000. Elizabeth's research focuses on mobile
networking, specifically routing protocols, security, scalability,
address autoconfiguration, and adaptability. Elizabeth is the author
of numerous papers related to ad hoc networking, and is an active
participant of the IETF working group for Mobile Ad hoc Networks.
Elizabeth serves on the technical program committee and organizing
committee for various networking related conferences. She is a member
of the ACM, ACM SIGMOBILE, IEEE, and IEEE Communications Society. See
https://www.cs.ucsb.edu/~ebelding for further details.
Sung-Ju Lee is a research scientist/engineer at the Internet Systems and
Storage Lab (ISSL) of Hewlett-Packard Laboratories. S.-J. received his M.S.
and Ph.D. in Computer Science at the University of California, Los Angeles,
and B.S. at Hanyang University, Korea. S.-J. published over twenty
papers in the field of mobile networking and content delivery
networks. He is a co-guest editor of the Wireless Communications and
Mobile Computing's special issue on Mobile Ad Hoc Networking, is
an area editor on ad hoc networks for ACM SIGMOBILE Mobile Computing
and Communications Review (MC2R), and serves as a technical program
committee and organizing committee member of various networking related
conferences. He is a member of IEEE, IEEE Communications Society, IEEE
Computer Society, ACM, ACM SIGCOMM, and ACM SIGMOBILE. His research
interests include mobile networking and computing, wireless
networks, ad hoc networks, content distribution networks, personal
area networks, streaming media, and performance evaluation. See
https://www.hpl.hp.com/personal/Sung-Ju_Lee for further details.
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Tutorial 8: Core Enabling Technologies For The Mobile Internet:
Systems With Global And Limited Mobility
Half-day
Prof. dr Milica Pejanovic, Faculty of Electrical Engineering, University of Montenegro
The convergence of wireless communications and Internet yields
remarkable opportunities for innovations in technology, applications
and services. Combination of the pervasive explosions in each of these
fields will enable wide-band wireless access to the Internet as well
as advanced multimedia services. This tutorial presents the essential
elements of the emerging disciplines and builds the framework to
understand how the component parts contribute to new system
solutions. It is basically achieved through a comprehensive
description of Internet delivery over current and near-future wireless
networks and different methods of providing Internet services in
wireless networks such as GPRS, EDGE, some of the Third Generation
Cellular and local area wireless IP. At the beginning, the tutorial
covers a review of current mobile/cellular technologies. A summary of
digital cellular (second, second plus and third generation) and
cordless wireless communication systems is presented emphasizing the
role of cellular engineering and radio channel characterization. The
next key topic deals with the issue of mobility itself focusing on
possible connectivity solutions and the emerging standardized elements
of Mobile IP. Adaptation of Internet architecture and web based
computing to the limitations and constraints of the mobile radio
channel and associated human interface is described through the
presented set of Wireless Application Protocol specifications. Thus,
WAP concept and features, including protocol elements, are fully
explained. Further on, the tutorial mainly addresses current working
view of second plus (GPRS, EDGE) cellular technologies as well as the
associated data services models seeking to provide integrated
multimedia services. Also, functional features and concepts of
solutions for local-based mobile computing are given. Thus, adaptation
of considered cellular technologies for limited mobility services
through wireless LANs (IEEE 802.11, HIPERLAN, Bluetooth)
implementation is presented. Relationships and comparisons of all
discussed mobile computing and wireless Internet core technologies
that fulfill the vision of wireless personal communications together
with expected prospects and trends are discussed at the tutorial end.
Outline
- Overview of wireless networks
- Cellular, personal, cordless, LANs, broadband,
satellite networks
- The cellular concept
- Evolution of cellular networks (first,
second, second-plus, third, fourth generation)
- Frequency reuse, Multiple access,
Handoffs, Signaling, Roaming
- Radio propagation: multipath fading and
mitigation
- Features of Internet architecture
- Architecture elements
- QoS issues
- Packet communications and coding
techniques
- Mobile IP
- Concepts and specific issues in the mobile
communications
- Mobility for IPv6
- Wireless Application Protocol (WAP)
- Architecture
- Wireless Application Environment
- Protocol elements
- Global-mobility cellular technologies: concepts,
features and constraints
- GPRS
- EDGE
- IMT-2000/UMTS
- Limited-mobility cellular technologies
- IEEE 802.11
- HIPERLAN
- Bluetooth
- Performance issues, comparisons and
discussion
Biography
Milica Pejanovic is full professor at the University of Montenegro,
Faculty of Electrical Engineering, Podgorica. Mrs. Pejanovic graduated
in 1982. at University of Montenegro with BSc degree in Electrical
Engineering. She has got MSc and PhD degrees in Telecommunications at
University of Belgrade. Prof. Pejanovic has also performed research in
mobile communications at University of Birmingham, UK for the period
1984-1985. She has been teaching at University of Montenegro basic
telecommunications courses on graduate and postgraduate levels, as
well as courses in mobile communications and computer communications
and networks, being the author of three books and many strategic
studies. At Scuola Superiore di Reiss Romoli (SSGRR) at l'Aquilla
(Italy) she is engaged as a lecturer for a course on Mobile
Internet. She has published more than 100 scientific papers in
international and domestic journals and conference proceedings. She
has been a chairman for several conferences and workshops, giving
tutorials and presenting invited papers at many technical and
scientific conferences (IEEE, VTC, WPMC...). Her main research
interests are: radio channel modeling and fading mitigation, wireless
networks performance improvement, wireless broadband transmission
techniques, optimization of telecommunication development policy.
Prof. Pejanovic has considerable industry and operating experiences
working as industry consultant (Ericsson, Siemens..) and Telecom
Montenegro Chairman of the Board. Being the project leader, she
conducted several GSM networks design and implementation projects
worldwide. At the moment she is involved in their enhancement and
upgrade for the purpose of wide-band data communications. Prof.
Pejanovic is leading the Government team of experts working on
telecommunications sector restructuring, including the intended
Telecom Montenegro privatization, as well as establishment of an
appropriate regulation infrastructure. Prof. Pejanovic is IEEE Member
and she participates in ITU-D projects concerning telecommunications
infrastructure development and Internet promotion as well as in ITU-R
Working Group for IMT-2000. Also, being an ITU expert, as a speaker
and a lecturer, she is involved in ITU seminars dealing with IMT-2000
issues.
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Tutorial 9: UWB Radio Technology in Wireless PANs
Half-day
Kai Siwiak, Time Domain Corporation, Huntsville, AL
Ultra Wideband (UWB) signaling is a modern wireless technique of
transmitting and receiving short baseband signals without an RF
carrier. The technique re-uses previously allocated RF bands by
spreading the impulse energy thinly in a wide spectrum, thus rendering
signals imperceptible in the noise floor of conventional narrow band
receivers. The technological basics and performance of several methods
of generating and radiating UWB signals, including time position coded
impulse UWB, direct sequence coded UWB, and transmitted reference UWB
approaches, are examined. Applications and uses of UWB radio
technology in wireless PANs are compared with conventional
techniques. Short pulse, low power techniques have enabled practical
through-the-wall radars, centimeter precision 3-D positioning, and
communications capabilities at very high data rates, and with
exceptional spatial capacities.
Biography
Kazimierz (Kai) Siwiak is Vice President - Strategic Development at
Time Domain Corporation, Huntsville, AL, and was a recent recipient of
the Dan Noble Fellow Award from Motorola Corporation. He is a
Registered Professional Engineer in Florida, Senior Member of the
IEEE, and has lectured on Ultra-wideband technology, and antennas and
propagation internationally. He received his B.S.E.E. and
M.S.E.E. degrees from the Polytechnic Institute of Brooklyn (now
Polytechnic University), Brooklyn, NY, and his Ph.D. from Florida
Atlantic University, Boca Raton, FL. Dr. Siwiak holds more than 70
patents world-wide, including 31 issued in the US. He has published
extensively, including one paper designated "Paper of the Year," by
IEEE Vehicular Technology Society. He has authored the text book,
Radiowave Propagation and Antennas for Personal Communications, Artech
House, now in Second Edition, and has contributed chapters to several
other books and encyclopedias. Prior to joining Time Domain, he held
positions at Motorola and at Raytheon.
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Tutorial 10: Orthogonal Frequency Division Multiplexing for
Wireless Communications
Half-day
Geoffrey Li and Len Cimini, ECE Georgia Tech
Orthogonal frequency division multiplexing (OFDM) has been shown to be
an effective technique to combat multipath fading in wireless
communications. This approach has been chosen as the standards in
several outdoor and indoor high-speed wireless data applications.
This tutorial initially presents the basic principles of OFDM. Then
we discuss the problems and some of the potential solutions to the
practical issues in implementing such a system. These include
techniques for peak-to-average power ratio reduction, time and
frequency synchronization, channel estimation, adaptive antenna arrays
and transmitter diversity. We conclude with a discussion of current
and proposed systems.
This tutorial not only gives a general description of OFDM for
wireless communications but also introduces the current research
results in this area.
Practicing engineers and researchers who are interested
in understanding and doing research in OFDM and related topics,
particularly those who are engaged in the design of high-speed
wireless data systems. OFDM is currently a very hot topic in
both the academic and industrial communities and
it is anticipated that this tutorial will be very well attended.
BIOGRAPHIES
Leonard J. Cimini, Jr., (S'77-M'82-SM'89-F'00) was born in
Philadelphia, PA. He received the B.S.E. (summa cum laude), M.S.E. and
Ph.D. degrees in electrical engineering from the University of Pennsylvania
in 1978, 1979, and 1982, respectively. During the graduate work he was
supported by a National Science Foundation Fellowship. Since 1982, he has
been employed at AT\&T, where his current research interests are in wireless
communications systems. Dr. Cimini is a member of Tau Beta Pi and
Eta Kappa Nu. He has been very active in the IEEE Communications Society.
He served as Editor-in-Chief of the IEEE J-SAC: Wireless
Communications Series and is currently serving as a Member At-Large
of the Board of Governors of the IEEE Communications Society.
He is also an Adjunct Professor at the University of Pennsylvania.
Ye (Geoffrey) Li (S'93-M'95-SM'97) was born in Jiangsu,
China. He received his B.S.E. and M.S.E. degrees in 1983 and 1986,
respectively, from the Department of Wireless Engineering,
Nanjing Institute of Technology, Nanjing, China,
and his Ph.D. degree in 1994 from the Department of Electrical
Engineering, Auburn University, Alabama.
After spending serval years at AT&T Labs - Research,
he joined Georgia Tech as an Associate Professor in 2000.
His general research interests include statistical signal processing
and wireless communications. He served as a guest editor for
two special issues on Signal Processing for Wireless Communications for
the IEEE J-SAC and is currently serving as an editor for Wireless
Communication Theory for the IEEE Transactions on Communications.
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