LTE系統(tǒng)一種高效準(zhǔn)動(dòng)態(tài)部分頻率復(fù)用方案.pdf

1、西南交通大學(xué)碩士學(xué)位論文LTE系統(tǒng)一種高效準(zhǔn)動(dòng)態(tài)部分頻率復(fù)用方案姓名：王昱申請(qǐng)學(xué)位級(jí)別：碩士專(zhuān)業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：范平志201105西南交通大學(xué)碩士研究生學(xué)位論文第1I頁(yè)AbstractSystemcapacityisalwaysakeyindicatoroftheperformanceofawirelesscommunicationsystemThecochannelnetworkingschemewithreusefacto

2、rlcouldmakemaximumuseofthescarcelyavailableradiesourceandincreasesystemcapacityHoweVer，inthiscase，stronginterferencecomingfromeithertheneighboringCellorneighboringsectorwouldimmenselydeterioratetheserVingqualityofthecell

3、—edgeusersInthisregard，interference豫ndomization，interferencecancellationandFractionalFrequencyReuse(FFR)areallpopularsolutionsHoweVer，F(xiàn)FRenjoysmuchhighergaincomparedwithinterferencerandomizationandhasmuchlowercostandcomp

4、lexitycomparedwithinterferencecancellationThus。FFRisanemcientandeffectivesolutiontoboostboththesystemcapacityandcell—edgeusers’servingqualityf0rthenextgenerationwirelesscommunicationsystem，andhasbeenadoptedbybothI，TEandW

5、lMAXstandardsbodiesTherefore，F(xiàn)FRisourf10cusinthethesisFFRcouldbeclassinedintothreecategories：staticFFR，dynamicFFRandquasidynamicFFRAmongthem，dynamicFFRsuffersmuchhighercostandcomplexity，whiletheperfbrmanceofstaticFFRisfa

6、rfromoptimumQuasidynamicFFRhasitsgaincosttradeoffadVantage。andreceiVesgreatattentiontoenhancetheperfbrmanceofstaticFFRInthethesis，anewquasidynamicFFRalgorithmisputforwardforIjrEsystemItskeyideasare：(1)fromthesystemoptimi

7、zationpointofView，eachusershouldhaVecertainbestsuitablereusepattefn；(2)thefeusepatternwithreusefactorlisclosetooptimalsolutionforcenteruserswhoenjoyhighSINR，thusresearchfbcusshouldbeontheedgeusers；(3)refiningthereusepatt

8、ernofcelledgeusersaccordingtotheirdiffbrentmajorinterfererscouldimprovetheirSINRwithoutchangingthereusefactor；(4)interferenceavoidanceisappliedfortheprotecteduserstoimproVetheirSINRconsiderably；(5)interreusepatternhand0V

9、eralgorithmisdesignedt0ensureeachuserchoosetheirbestsuitablereusepatternAnalysisshowsthatmajoroVerheadofthisschemecomesfromthedetermination0fthetypeofedgeusersSimulation’isdoneatanLTEsystemleVelsimulator1tisshownthatthep

10、roposedschemehasconsiderablyimprovedboththecellaVeragespectrumefficiencyandcelIedgeusers’spectrumemciency，andthenumberofprotectedusersissignincantlyreducedAdditionaIlysimuIationresultshowsthattheproposedschemeisquitesuit