Preface

works GmbH & Co. KG in Munich, Germany. The investigation has been conducted under the supervision of Prof. Dr.-Ing. Anja Klein, the director of Communications Engineering Institute at the Technical University of Darmstadt, and the supervision of Dr.-Ing. Elena Costa from Nokia Siemens Networks. There are many people who have helped me along the duration of this thesis. Without their support this work would have never been accomplished. My special appreciation is given to Prof. Dr.-Ing A. Klein for encouraging and supervis-ing my work, and for valuable guidance of the thesis. I would like to thank Dr.-Ing E. Schulz and Dr.-Ing M. Lott for the nice offer to let me be part of the team and for the help in the application of the necessary financial support. I am deeply indebted to my supervisor Dr.-Ing. E. Costa, not only for fruitful technical discussions, for practical suggestions on presentation and writing, but also for all kinds of support and encouragement in the work and in the life. I can still vividly remember the first time to meet Dr.-Ing. E. Costa in 2004 when she showed me the problem of adaptive resource allocation, which became my thesis topic later. I have learned so much from her since then. I would like to also express my gratitude to all friends and colleagues in the Radio Sys-tem Technology department of Nokia Siemens Networks for the interesting and valuable discussions as well as for those happy days we spent together. Especially, I want to thank Mr. R. Halfmann for his magic tips which makes my computer-based work so effective. Last but not least, I am profoundly grateful to my family for all the unconditional support and love in my life