In-band relays for next generation communication systems

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dc.contributor Aalto-yliopisto fi
dc.contributor Aalto University en
dc.contributor.author Doppler, Klaus
dc.date.accessioned 2012-08-24T11:17:38Z
dc.date.available 2012-08-24T11:17:38Z
dc.date.issued 2010
dc.identifier.isbn 978-952-60-3125-5 (electronic)
dc.identifier.isbn 978-952-60-3124-8 (printed) #8195;
dc.identifier.issn 1797-4275
dc.identifier.uri https://aaltodoc.aalto.fi/handle/123456789/4778
dc.description.abstract Next generation mobile communication systems will operate at high system bandwidths of up to 100MHz and at carrier frequencies beyond 2GHz to provide peak data rates of up to 1Gbit/s with similar average revenues per user as todays cellular networks. High bit rates should be available to all users in a cell which is challenging due to the unfavorable propagation conditions in these bands. In-band relays are a seen as a promising technology for cellular networks to extend the high bit rate coverage and to enable cost efficient network deployments. The research in this thesis has contributed to the development of the relaying concept within the European research project WINNER. WINNER has designed a next generation radio system concept based on Orthogonal Frequency Division Multiple Access (OFDMA) with the inclusion of relays as one of the major innovations. In our work we have identified the radio resource management as the most important function to exploit the potential benefits of relay based deployments. We develop a flexible radio resource management framework that adapts to a wide range of deployments, whereas our main focus is on metropolitan area deployments. Here we propose to utilize a dynamic resource assignment based on soft frequency reuse. Further, we propose a practical way to integrate cooperative relaying in a relay network. This concept allows the cooperation of multiple radio access points within a relay enhanced cell with low overhead and small delays. In system simulations we compare the performance of relay deployments to base station only deployments in a metropolitan area network. Our results show that relay deployments are cost efficient and they increase both the network throughput as well as the high bit rate coverage of the network. Further, they show that our proposed soft frequency reuse scheme outperforms competing interference coordination schemes in the studied metropolitan area scenario. Even though the results have been obtained for WINNER system parameters, the conclusions can also be applied to OFDMA based systems such as 3GPP Long Term Evolution and WiMAX. en
dc.format.extent Verkkokirja (6023 KB, 152 s.)
dc.format.mimetype application/pdf
dc.language.iso en en
dc.publisher Aalto-yliopiston teknillinen korkeakoulu en
dc.relation.ispartofseries Report / Helsinki University of Technology, Department of Signal Processing and Acoustics 19 en
dc.subject.other Telecommunications engineering
dc.title In-band relays for next generation communication systems en
dc.type G4 Monografiaväitöskirja fi
dc.contributor.school Aalto-yliopiston teknillinen korkeakoulu fi
dc.contributor.department Signaalinkäsittelyn ja akustiikan laitos fi
dc.contributor.department Department of Signal Processing and Acoustics en
dc.subject.keyword cooperative relaying en
dc.subject.keyword radio resource management en
dc.subject.keyword Long-Term Evolution en
dc.subject.keyword Manhattan grid en
dc.identifier.urn URN:ISBN:978-952-60-3125-5
dc.type.dcmitype text en
dc.type.ontasot Väitöskirja (monografia) fi
dc.type.ontasot Doctoral dissertation (monograph) en


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