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Estimation of Inter-Cell Interference in 3G Communication Systems
Linköping University, Department of Electrical Engineering, Automatic Control.
Linköping University, Department of Electrical Engineering, Automatic Control.
2011 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesis
Abstract [en]

In this thesis the telecommunication problem known as inter-cell interference is examined. Inter-cell interference originates from users in neighboring cells and affects the users in the own cell. The reason that inter-cell interference is interesting to study is that it affects the maximum data-rates achievable in the 3G network. By knowing the inter-cell interference, higher data-rates can be scheduled without risking cell-instability.

An expression for the coupling between cells is derived using basic physical principles. Using the expression for the coupling factors a nonlinear model describing the inter-cell interference is developed from the model of the power control loop commonly used in the base stations. The expression describing the coupling factors depends on the positions of users which are unknown. A quasi decentralized method for estimating the coupling factors using measurements of the total interference power is presented.

The estimation results presented in this thesis could probably be improved by using a more advanced nonlinear filter, such as a particle filter or an Extended Kalman filter, for the estimation. Different expressions describing the coupling factors could also be considered to improve the result.

Place, publisher, year, edition, pages
2011. , 89 p.
Keyword [en]
inter-cell interference, thermal noise, Decision Feedback Equalizer, estimation, 3G, Kalman filter, nonlinear model, quasi-decentralized estimator
National Category
Control Engineering
Identifiers
URN: urn:nbn:se:liu:diva-71156ISRN: LiTH-ISY-EX--11/4516--SEOAI: oai:DiVA.org:liu-71156DiVA: diva2:445338
Subject / course
Automatic Control
Presentation
2011-09-29, Algoritmen, Linköpings Universitet, Linköping, 10:15 (Swedish)
Uppsok
Technology
Supervisors
Examiners
Available from: 2011-10-06 Created: 2011-10-03 Last updated: 2011-10-06Bibliographically approved

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Estimation of Inter-Cell Interference in 3G Communication Systems(1899 kB)573 downloads
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CiteExportLink to record
Permanent link

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Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
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  • 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
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  • asciidoc
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