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Power Control in Cellular Radio Systems: Analysis and Design
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
Linköping University, Department of Electrical Engineering, Automatic Control. Linköping University, The Institute of Technology.
1999 (English)In: Proceedings of the 1999 Radiovetenskap och Kommunikation, 1999Conference paper, Published paper (Other academic)
Abstract [en]

Many algorithms in communications systems can be considered as control loops, where the computed quantities depend on feedback information. A common scheme is to use increase/decrease signaling for bandwidth efficiency. Furthermore, the feedback information is delayed. The time delay itself, and even more pronounced in combination with nonlinearities, such as the increase/decrease mechanism, may cause oscillations and instabilities in the system. In this work, analysis methods based on root locus and describing functions are discussed. Design and tuning of algorithms are employed using pole placement techniques. Particular examples include clock synchronization in ADSL modems, control of available bit rate in data networks and, as studied in this project, distributed implementation of power control in cellular radio systems. The relevance of the methods is further illuminated by simulations. 

Place, publisher, year, edition, pages
1999.
Keyword [en]
Power control, Cellular radio systems, Distributed control, Local stabilization
National Category
Engineering and Technology Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-91191ISBN: 9789163081569 (print)OAI: oai:DiVA.org:liu-91191DiVA: diva2:617171
Conference
1999 Radiovetenskap och Kommunikation, Karlskrona, Sweden, June, 1999
Available from: 2013-04-22 Created: 2013-04-17 Last updated: 2013-04-22

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Gunnarsson, FredrikGustafsson, Fredrik

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