Power Control Algorithms and Stability Analysis for Radio Network Control
1998 (English)In: Proceedings of the 37th IEEE Conference on Decision and Control, 1998, 2041-2042 vol.2 p.Conference paper (Refereed)
Power control algorithms in cellular radio networks are analyzed. This is basically a MIMO problem where the controlled input is the powers used by the transmitters, and the measurements consist of signal to interference ratios for each receiver. These algorithms can, for each single connection and neglecting the cross couplings, be interpreted as a feedback system. The main contribution here is to analyze a generic control algorithm, which covers some important suggested classical control theory methods such as the root locus and describing function. The results include the important conclusion that unavoidable time delays and nonlinearities (saturation and quantization) in the feedback loop can cause a considerable loss in the stability margin. The results are supported by simulations.
Place, publisher, year, edition, pages
1998. 2041-2042 vol.2 p.
MIMO systems, Cellular radio, Delays, Feedback, Power control, Radio networks, Stability
IdentifiersURN: urn:nbn:se:liu:diva-91601DOI: 10.1109/CDC.1998.758632ISBN: 0-7803-4394-8OAI: oai:DiVA.org:liu-91601DiVA: diva2:625242
37th IEEE Conference on Decision and Control, Tampa, FL, USA, December, 1998