Pole Placement Design of Power Control Algorithms
1999 (English)In: Proceedings of the 49th IEEE Vehicular Technology Conference, 1999Conference paper (Refereed)
Time delays reduces the performance of any controlled system. If neglected in the design phase, the system may even become unstable when using the designed controller. Several power control strategies have been proposed in order to improve the capacity of cellular radio systems, but time delays are usually neglected. Here, it is shown that the problems can be handled by considering the time delays in the design phase in order to choose the appropriate parameter values. Most popular algorithms can be seen as special cases of an integrating controller. This structure is extended first to a proportional integrating (PI)-controller and then further on to a general linear controller of higher orders. Corresponding design procedures are outlined based on techniques, such as pole placement, from the field of automatic control. The PI-controller is a very appealing choice of structure, with better performance compared to an I-controller and less complex than a higher order controller. The benefits are further illuminated by network simulations.
Place, publisher, year, edition, pages
Power control, Cellular radio systems, Pole placement, Distributed control
Engineering and Technology Control Engineering
IdentifiersURN: urn:nbn:se:liu:diva-91188DOI: 10.1109/VETEC.1999.778433ISBN: 0-7803-5565-2OAI: oai:DiVA.org:liu-91188DiVA: diva2:617198
49th IEEE Vehicular Technology Conference, Houston, TX, USA, May, 1999