Performance of Advanced Hybrid Link Adaptation Algorithms in Mobile Radio Channel

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dc.contributor.authorWieser, Vladimir
dc.contributor.authorPsenak, Vladimir
dc.coverage.issue3cs
dc.coverage.volume17cs
dc.date.accessioned2016-03-18T10:36:57Z
dc.date.available2016-03-18T10:36:57Z
dc.date.issued2008-09cs
dc.description.abstractThe fast power adaptation is essential for WCDMA based mobile radio networks, as 3G UMTS. Although the first version of UMTS has been released in 1999 (Release 99) evolution was not finished yet. Quality of Service (QoS) and user data rate (e.g. HSDPA and HSUPA) are continuously increasing from release to release. Even though link adaptation frequency (1500 times per second) seems to be enough to span accidental fadings of mobile radio channel, used link adaptation algorithm is based on non-actual information about mobile radio channel state, which causes transmitter reaction delay to the actual channel state. Usage of appropriate prediction method to estimate near future channel state seems to be a valuable step to improve hybrid link adaptation algorithm. In this article we have described and simulated the new SIR-slot based advanced link adaptation algorithms. Algorithms were designed to increase efficiency of data transmission among a user equipment and base stations (uplink) for different simulation environments (pedestrian channel with mobile subscriber speed 5 km/h, 15 km/h and vehicular channel with speed 45 km/h).en
dc.formattextcs
dc.format.extent81-86cs
dc.format.mimetypeapplication/pdfen
dc.identifier.citationRadioengineering. 2008, vol. 17, č. 3, s. 81-86. ISSN 1210-2512cs
dc.identifier.issn1210-2512
dc.identifier.urihttp://hdl.handle.net/11012/57218
dc.language.isoencs
dc.publisherSpolečnost pro radioelektronické inženýrstvícs
dc.relation.ispartofRadioengineeringcs
dc.relation.urihttp://www.radioeng.cz/fulltexts/2008/08_03_081_086.pdfcs
dc.rightsCreative Commons Attribution 3.0 Unported Licenseen
dc.rights.accessopenAccessen
dc.rights.urihttp://creativecommons.org/licenses/by/3.0/en
dc.subjectNext generation mobile networksen
dc.subjectlink adaptation algorithmen
dc.subjectprediction methodsen
dc.subjectuplink data transmission efficiencyen
dc.subjecthybrid adaptationen
dc.titlePerformance of Advanced Hybrid Link Adaptation Algorithms in Mobile Radio Channelen
dc.type.driverarticleen
dc.type.statusPeer-revieweden
dc.type.versionpublishedVersionen
eprints.affiliatedInstitution.facultyFakulta eletrotechniky a komunikačních technologiícs
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