liu.seSearch for publications in DiVA
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Power Control in Cellular Systems Subject to Constraints and Time Delays
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)Report (Other academic)
Abstract [en]

Stability is a fundamental property desirable for any controlled system. We briefly review the root locus and describing function techniques, which are tools for stability analysis, and show how they can be applied to power control algorithms in cellular radio networks. The root locus method is used to find stability limits on controller parameters, and describing functions for predicting the presence of oscillations in the system. Thus these methods can be used to support the design phase, when deciding upon the appropriate controller parameters. These tools are demonstrated for various control algorithms and when different smoothing filters are applied. The analysis reveals that the distributed power control (DPC) algorithm, which works fine under ideal circumstances, yields an unstable system when subject to a small time delay. Furthermore, it is concluded that the performance with respect to stability is better when the measurements are averaged by an exponential forgetting filter than by the moving average filter.

Place, publisher, year, edition, pages
Linköping: Linköping University Electronic Press, 1999. , 14 p.
Series
LiTH-ISY-R, ISSN 1400-3902 ; 2144
Keyword [en]
Cellular radio systems, Power Control, Local loop analysis, Time delays, Root locus, Describing functions
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-55702ISRN: LiTH-ISY-R-2144OAI: oai:DiVA.org:liu-55702DiVA: diva2:316449
Available from: 2010-04-30 Created: 2010-04-30 Last updated: 2014-09-08Bibliographically approved

Open Access in DiVA

Power Control in Cellular Systems Subject to Constraints and Time Delays(178 kB)67 downloads
File information
File name FULLTEXT02.pdfFile size 178 kBChecksum SHA-512
6b97c09a2f82ed5dcc6780522c8c0077cab585f4d009ada0084f56162942b32bf3e1eb095516f8b2753b3c272c7ae5bb8943a191c06661d0a162b33f64a21950
Type fulltextMimetype application/pdf
fulltext(1460 kB)34 downloads
File information
File name FULLTEXT01.psFile size 1460 kBChecksum SHA-512
ebdbccdd3d4b9d3d942189485ee6921263d8b580de8a1d6b58bdd6f546fde90211a91c0997daf4d359776d40436fe27300a5e8a3b83c1ed36cf838917246123d
Type fulltextMimetype application/postscript

Authority records BETA

Gunnarsson, FredrikGustafsson, Fredrik

Search in DiVA

By author/editor
Gunnarsson, FredrikGustafsson, Fredrik
By organisation
Automatic ControlThe Institute of Technology
Control Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 101 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 95 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • oxford
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf