基于MIMO-OFDMA的新一代无线通信网络无线资源管理机制研究

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1、西南交通大学硕士学位论文基于MIMO/OFDMA的新一代无线通信网络无线资源管理机制研究姓名：蒋海平申请学位级别：硕士专业：通信与信息系统指导教师：邓平20080601西南交通大学硕士研究生学位论文第1I页有技术大多是从单一的物理层或媒质接入控制等层进行考虑，无法同时满足各用户的QoS需求和系统整体传输容量最大。本文采用跨层设计的思想，联合考虑物理层和媒体接入控制MAC层，提出了一种多用户多天线传输的方法，实现多用户多天线跨层优化传输。最后，进行了全文总结，并对下一步工作展望。关键词：MIMO：OFDMA：无线资源分配；QoS西南交通大学硕士研究生学位论文第1

2、II页AbstractWiththerapiddevelopmentofwirelesscommunication，interactandmultimedia，themodesofnewgenerationmobilecommunicationnetworksbecomediverse，high。speed，flexibleandhighefficient．Orthogonalfrequencydivisionmultiplexing(OFDM)andmultiple-inputmultiple—output(MIMO)havebeenacknowledged

3、astwomajorinformationtransmissionandprocessingtechniquesfornextgenerationwirelesscommunicationnetworks，thustherearemanyproblemstobefacedforradioresourcemanagement．Therefore，theschemesofradioresourcemanagementinnewgenerationwirelesscommunicationnetworksbasedonMIM0／OFDMAareresearchedi

4、nthisdissertation．·Firstly,accordingtothearchitecturesandcommunicationservicesofnewgenerationwirelesscommunicationnetworks，somenewresearchareasandstatusofradioresourcemanagementinnewgenerationwirelesscommunicationareanalyzed，including：integratedradioresourcemanagementbasedontime，fre

5、quency,spacedimensionsofMIMO／OFDM，QoSawarebasedadaptivechannelallocationtechniquesandenergyefficientintegratedschedulingtechnique．Secondly,forthecharacteristicofOFDMAtechnique，theOFDMAbasedsystemscanallocatedynamicallysubcarrierstousersintermsofthechannelqualityandQoSrequirement．Ano

6、velalgorithmisproposedwhichcanguaranteeusers’QoSrequirements．Simulationresultsshowthatthealgorithmimprovethesystem’Sthroughputandguaranteesthefairnessamonguserswhilenotincreasingitscomputationcomplexity．Thirdly,users’servicesCanbedividedintohi曲speedandlowspeedservicesgroupintermsoft

7、hevelocityofusers．Sincetheirchannelstatesvaryquicklyforhighspeedusers，thechannelstateinformationwhichisfedbackbythereceivercannotshowthereal—timeconditionSOthatcannotguaranteesystem’Sperformance．Atthesametime，ifradioresourceallocationisfullybasedonchannelstateinformation，theseincrea

8、setheneedednumberof