Advances in multi-user scheduling and turbo equalization for wireless MIMO systems [Elektronische Ressource] / Martin Fuchs-Lautensack.ISLE

Martin Fuchs-Lautensack

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• Publié par: technische_universitat_ilmenau
• Publié le: 01 janvier 2009
• Nombre de lectures: 34
• Langue: English
• Poids de l'ouvrage: 67 Mo

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Advances in Multi-User Scheduling
and Turbo Equalization
for Wireless MIMO Systems
Martin Fuchs-Lautensack
Reports from the Communications Research Laboratory
at Ilmenau University of Technology
Editor: Univ.-Prof. Dr.-Ing. Martin Haardt
Ilmenau, Germany, 2008Research Reports from the Communications Research Laboratory
at Ilmenau University of Technology
Martin Fuchs-Lautensack
Advances in Multi-User Scheduling
and Turbo Equalization
for Wireless MIMO Systems
2009Bibliografische Information Der Deutschen Bibliothek
Die Deutsche Bibliothek verzeichnet diese Publikation in der Deutschen Nationalbibliografie;
detaillierte bibliografische Daten sind im Internet u¨ber http://dnb.ddb.de abrufbar.
ISBN 978-3-938843-43-7
c Verlag ISLE 2009
Alle Rechte, auch das des auszugsweisen Nachdruckes, der auszugsweisen oder vollstandigen¨
¨Wiedergabe, der Speicherung in Datenverarbeitungsanlagen und der Ubersetzung,
vorbehalten.
Verlag ISLE, Betriebsst¨atte des ISLE e.V. ,
Werner-von-Siemens-Str. 16, 98693 Ilmenau
Printed in GermanyFakult¨at fu¨r Elektrotechnik und Informationstechnik
der Technischen Universit¨at Ilmenau
Advances in Multi-User Scheduling and
Turbo Equalization for Wireless MIMO Systems
Martin Fuchs-Lautensack
geboren am 6.6.1977 in Ulm
Dissertation zur Erlangung des
akademischen Grades Doktor-Ingenieur (Dr.-Ing)
Anfertigung im: Fachgebiet Nachrichtentechnik
Institut fu¨r Informationstechnik
Fakultat fur Elektrotechnik und Informationstechnik¨ ¨
Gutachter: Univ.-Prof. Dr.-Ing. Martin Haardt
Univ.-Prof. Dr.-Ing. Albert Heuberger
Univ.-Prof. Dr.-Ing. Eduard Jorswieck
Vorgelegt am: 21.10.2008
Verteidigt am: 19.06.2009
Verf.-Nr.: EI 226
urn:nbn:de:gbv:ilm1-2009000114Preface
Welcome to the second volume of the Research Reports from the Communications Research
Laboratory at Ilmenau University of Technology. It is the doctoral dissertation of Martin
Fuchs-Lautensack, entitled “Advances in Multi-User Scheduling and Turbo Equalization for
WirelessMIMOSystems”. Thisthesisisorganizedinthreemainparts. InPartI,MartinFuchs-
Lautensack deals with low computational complexity approaches to the problem of scheduling
users to resources of an SDMA system with channel adaptive precoding. Part II extends this
work to systems with multiple transmitting stations, showing various ways to implement inter-
ference avoidance scheduling with low complexity. The concept of Turbo Equalization is the
main topic of Part III where optimizations to traditional approaches are developed.
Multi-user MIMO systems are a key component of wireless communication systems beyond
the third generation, e.g., the fourth generation, to increase their spectral efficiency and to
enable higher data rates with a reduced cost per bit as compared to third generation mobile
communication systems. Specifically, linear (channel adaptive) multi-user precoding has been
identified as a candidate transmit signal processing approach. Low complexity scheduling is key
to fully exploiting the benefits offered by such approaches.
In this volume, Martin Fuchs-Lautensack solves a variety of challenging tasks that are highly
relevant to the design of future wireless communication systems in an elegant way. These tasks
are at the intersection of several scientific disciplines including transmit and receive signal pro-
cessing, communications, linear algebra, and system modeling. The results of this thesis repre-
sent a significant contribution to the field of multi-user MIMO signal processing and, therefore,
have an important impact on the design and realistic evaluation of multi-user MIMO systems.
Ilmenau, October 2008 Martin Haardt
iPreface
iiAcknowledgements
My thanks go first of all to my supervisor Prof. Dr.-Ing. Martin Haardt for his guidance. With
his projects he managed to open a wide and diverse field of interesting international research to
his assistants.
Thank you to Prof. Dr.-Ing. Albert Heuberger and Prof. Dr.-Ing. Eduard Jorswieck for
investing so much time to review this work albeit their engagement in starting up their newly
created research groups. The opportunities to discuss with them helped to greatly improve
the quality of the final manuscript. Dr. Karl Schran from the Digital Signal Processing group
deserves my gratitude for accepting in such an unbureaucratic manner to be an examiner in the
rigorosum.
A majority of the results in this thesis would not have been possible without the cooperation
with Dr.-Ing. Giovanni Del Galdo. This is not only due to the fact that he developed the
IlmProp, an astonishingly versatile channel modeling tool which is an invaluable contribution
to the entire lab’s work. It is mostly due to his selfless sharing of his knowledge and experience
which made the cooperation feel like having a second advisor at hand.
I am also especially grateful to Dr. Veljko Stankovic. In my opinion, with his devotion to
his work way beyond anything usual he was the driving force in the lab’s work during the IST-
WINNER projects and beyond. Ever so often we pulled each other through muddy waters by
exchanging what each of us could do best and sharing our friendship. Thank you for providing
thefirstsetofthroughputcurveswithWINNERsystemparameters, whichresultedfromajoint
simulation campaign.
Thank you also to Florian R¨omer for the second set of throughput curves with ProSched
scheduling and updated WINNER parameters. After Dr. Stankovic had left he picked up the
speed in the WINNER work astonishingly naturally. His work and both his professional and
personal advice are an immense contribution to the lab’s success.
Special thanks go to Ulrike Korger and Christian K¨as for joining in the effort of implementing
an instance of the WINNER metropolitain area channel model while being busy with their work
for projects funded by the German Research Foundation (Deutsche Forschungsgemeinschaft,
DFG).
All other fellow researchers in the WINNER projects will be remembered for good discussions
and for sharing their expertise.
Thank you to the colleagues Marko Hennh¨ofer, Marko Milojevic, Anja Grosch, Nuan Song,
Bin Song, Henry Henry, Joao Paulo Lustosa Da Costa and Martin Weis as well as to all the
iiiAcknowledgements
researchers in the Electronic Measurement Laboratory EMT, especially to Christian Schneider,
for good discussions, good times and being more than just colleagues.
Dr. Mike Wolf was the driving strength behind many student tutorials tought, with his
patience in explaining and his supplementary materials which helped a great deal to bring dusty
topics to life. Thank you for being one of the solid rocks in difficult times, which also applies
in many ways to the lab’s secretary Brigitte Epler, technical assistant Wolfgang Erdtmann and
former members of the lab Dr. Ralf Irmer and Dr. Wolfgang R¨ohr. It was a special pleasure to
work together with them in both professional and personal aspects.
Thankyoutoallstudentresearchersforhelpinginthevariousprojects. Manyofthemkepton
producing really good results even when time to supervise was scarce. I would like to especially
mention Bernd Bandemer, whose restless implementation efforts and deep understanding of the
matter were key to the Turbo Equalization results in this thesis, as well as Laurits Hamm and
would like to thank both for becoming friends.
My family members made this work possible in the first place by helping me move to Ilmenau
and by continuously supporting me in all possible ways. I would never have thought that a
similar kind of strong company can exist again, but was disabused when the family of my wife
Anke came into my life. The sheer fact of her being there for me stopped a long fall.
Ilmenau, October 2008 Martin Fuchs-Lautensack
iv