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Generalized Frequency Reuse Schemes for OFDMA Networks: Optimization and Comparison
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
Linköping University, Department of Science and Technology, Communications and Transport Systems. Linköping University, The Institute of Technology.
2010 (English)In: IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), 2010, Piscataway, NJ, USA: IEEE , 2010Conference paper, Published paper (Refereed)
Abstract [en]

Frequency reuse is a key concept for interference mitigation and thereby enhancing cell-edge performance in OFDMA networks. Two representative strategies are Fractional Frequency Reuse (FFR) and Soft Frequency Reuse (SFR). Both divide a cell into a center zone and an edge zone, and differentiate their levels of frequency reuse. Previous work on FFR and SFR has focused on networks of relatively small size with standard hexagon-shaped cells. And dividing the cell edge frequency band into three parts has been a common practice so far. However, for real-life networks, this is inadequate because of the irregular cell layout. We consider generalized FFR and SFR schemes, where the number of sub-bands is not restricted to three, and for SFR the power ratio is variable. To find optimal sub- band allocation for the generalized schemes, we present an approach based on large-scale optimization to deal with networks with irregular cell layout. The optimization process allows us to analyze the impact of the number of sub-bands and the SFR power ratio on cell-edge performance, and thereby compare the reuse schemes. We conduct experiments on large networks with realistic radio propagations and present a thorough numerical comparison.

Place, publisher, year, edition, pages
Piscataway, NJ, USA: IEEE , 2010.
Series
IEEEVTS Vehicular Technology Conference. Proceedings, ISSN 1550-2252
National Category
Telecommunications
Identifiers
URN: urn:nbn:se:liu:diva-77311DOI: 10.1109/VETECS.2010.5493830ISI: 000287515900216ISBN: 978-1-4244-2518-1 (print)ISBN: 978-1-4244-2519-8 (print)OAI: oai:DiVA.org:liu-77311DiVA: diva2:526294
Conference
IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), Taipei, Taiwan, 16-19 May 2010
Available from: 2012-05-11 Created: 2012-05-11 Last updated: 2014-04-17Bibliographically approved

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Chen, LeiYuan, Di

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CiteExportLink to record
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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