TDSCDMA系统中新型接力切换算法研究

《TDSCDMA系统中新型接力切换算法研究》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、北京交通大学硕士学位论文TD-SCDMA系统中新型接力切换算法研究姓名：黄丽聪申请学位级别：硕士专业：通信与信息系统指导教师：朱刚20080601北京交通大学硕士学位论文ABSTRACTABSTRACT：TD．SCDMAisthefirstinternationalstandardofcommunicationsystem，withindependentintellectualpropertyrightsproposedbyChina．TheTD．SCDMAnetworkhasbeenlaidin10citiesofChina，andnowitiSinthetrialcommercialsta

2、ge．BatonhandoverisakeytechnologyofTD·SCDMAsystemwhichaffectstheperformanceofTD-SCDMAsystemdirectly．Atpresent，theinterruptionexistinginthetrailnetworkisserious，andtheinvestigationshowsthat60％ofthecommunicationinterruptioniScausedbyunsuccessfulhandover．ToimprovetheperformanceofTD．SCDMAnetworksignifica

3、ntly,theoptimizationonbatonhandoverisnecessary,andtheresearchonoptimizationcanprovidetechnicalsupportforitsimpellinginthecommercialstage．Inthispaper,theprocessesandthealgorithmsofbatonhandoverareintroducedandtheparameterswhichaffectthehandoverperformanceareanalyzed(suchasfiltercoefficient．thehystere

4、sisofbatonhandover，eellindividualoffset)indetailfirstly．ThenbasedonthetestexperienceofTD．SCDMAtrialnetwork，theproblemsonbatonhandoverinTD．SCDMAsystemareanalyzed，suchastheeffectofthecomer,thecommunicationinterruptionforhigh-speedUSerS．Thirdly,accordingtothetechnicalcharacteristicsofTD—SCDMAsystem(suc

5、hassmartantennaanduplinksynchronization)，theprocessesandalgorithmsofbatonhandoverareoptimized，includingthecandidatelistimprovementbasedonDOAcalculatedbysmartantenna，measurementimprovement，andadmissioncontrolimprovementfordifferentservices．Fourthly,anewhandoveralgorithmisproposedtodealwiththeproblems

6、existinginthetrialnetwork．ThisnewalgorithmisbasedonthepilotsignalstrengthandtakesUSerequipment’Sspeed，directionofmovement，distancebetweenthebasestationanduserequipmentastheadaptivefactorsofhandoverparameters．ThisalgorithmCallsolvehandoverissuesforthehi曲一speedUSerSandCanalsoimprovetheperformanceofTD—

7、SCDMAsystem，Finally,asimulationsystemonbatonhandoverissetup．Usingthissimulationsystem，theinfluenceofparametersonhandoverperformanceisanalyzed．andthenewalgorithmforbatonhandoveriSsimulatedandverified．T