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1、北京郵電大學(xué)碩士論文OFDMA系統(tǒng)資源分配策略的研究和實現(xiàn)量,輪詢算法公平性最好,比例公平算法能夠取得較好的折中性能;總結(jié)多用戶的聯(lián)合子載波和功率分配算法,并就一種聯(lián)合分配算法進行了仿真,聯(lián)合算法的復(fù)雜度較高。多小區(qū)場景下:歸納總結(jié)干擾抑制技術(shù),對下行干擾協(xié)調(diào)的提案進行研究并仿真,通過頻率復(fù)用方法可以協(xié)調(diào)小區(qū)間的同頻干擾,直接影響系統(tǒng)吞吐量和小區(qū)邊緣用戶的性能。此外,本文還對用于分布式網(wǎng)絡(luò)資源分配的干擾議價進行了初步的研究,加深了對無線資源分配的理解。關(guān)鍵詞:OFDMA系統(tǒng)資源分配功率分配子載波調(diào)
2、度粒子群算法北京郵電大學(xué)碩士論丈OFIⅪIA系統(tǒng)資源分配策略的研究和實現(xiàn)RESEARCHANDSIMUIATIoNONRESoURCEALLOCATIONMETHODSINOFDML~SYSTEMABSTRACTWithrapiddevelopmentofwirelesscommunicationtechnologyandfastgrowthofvarioustraffics,limitedwirelessresources,suchasfrequencyandpower,appearprecio
3、us.TheaimofwirelesscommunicationsystemistomakeefficientuseofsuchpreciousresourcesunderdifferentQoS(QualityofService)requirements.Thus,thedesignofeffectiveandflexibleresourceallocationplaysanimportantroleinsystemperformance.一OFDM(OrthogonalFrequencyDiv
4、isionModulation)hasbecomemoreandmorepopularforitshighfrequencyefficiencyandstrongabilitytoanti-jamming,andhasbecomeonekeyphysical—layertechnologyinthenextgenerationofwirelesscommunicationsystem.ResourceallocationinOFDMsystemistoallocatesubcarrierandtr
5、ansmitpowerwiththeknowledgeofinstantaneouschannelconditions,whichiscrucialtoguaranteehighfrequencyefficiencyforsystemandexcellentQoSperformanceforuserinthefuturewirelesssystem.Withthisinmind,thisthesisfocusesonthestudyofvariousresourceallocationscheme
6、s,andgivestheirperformancesimulationresultsinOFDMAsystems.Inthisthesis,westartwithanintroductionofwirelessresourceallocationaswellassomeessentialOFDMknowledge,andthenputemphasisonthestudyofpowerallocationandsubcarrierschedulinginOFDMAsystem.Thestudysc
7、enarioincludesbothsingle—cellOFDM北京郵電大學(xué)碩士論文OFDMA系統(tǒng)資源分配策略的研究和實現(xiàn)systemandmulti-cellOFDⅣ認system.Incaseofsingle—cellOFDMAsystem,thestudyrangesfromsingleuserpowerallocation,multi-usersubcarrierschedulingtojpintsubcarrierandpowerallocation.Inmulti—cellcase,
8、wefocusonpowerallocationschemeandinterferencecoordinationtechnology.ThemaincontributionofthisworkistoemploythePSO(ParticleSwarmOptimization)techniquetoresourceallocation,andproposeanewresourceallocationschemeinmulti.eellOFDMAsystem.Thesimulati