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Generalized Frequen...
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Chen, LeiLinköpings universitet,Kommunikations- och transportsystem,Tekniska högskolan
(författare)
Generalized Frequency Reuse Schemes for OFDMA Networks: Optimization and Comparison
- Artikel/kapitelEngelska2010
Förlag, utgivningsår, omfång ...
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Piscataway, NJ, USA :IEEE,2010
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LIBRIS-ID:oai:DiVA.org:liu-77311
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https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-77311URI
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https://doi.org/10.1109/VETECS.2010.5493830DOI
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Språk:engelska
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Sammanfattning på:engelska
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Ämneskategori:ref swepub-contenttype
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Ämneskategori:kon swepub-publicationtype
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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.
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Yuan, DiLinköpings universitet,Kommunikations- och transportsystem,Tekniska högskolan(Swepub:liu)diyu90
(författare)
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Linköpings universitetKommunikations- och transportsystem
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:IEEE 71st Vehicular Technology Conference (VTC 2010-Spring), 2010Piscataway, NJ, USA : IEEE97814244251819781424425198
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