欢迎来到天天文库
浏览记录
ID:31954683
大小:2.10 MB
页数:59页
时间:2019-01-29
《协作认知无线电网络中基于能效和谱效的资源分配技术研究》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、AbstractOFDM-basedcognitiveradionetworkswithimperfectspectrumsensing.Theoptimalresourceallocationstrategy,includingsensingtimeandtransmitpower,isdesignedtomaximizetheergodicthroughputofthesecondarysystem.Foratwo-hopcooperativecommunicationinthesecondarysystem,theamplify-and-forw
2、ardrelayprotocolisadoptedandenablesthesourceandrelaytosensethestateoftheprimaryuser(PU)jointly.ToprotectthePUeffectivelyfromharmfulinterference,theaverageinterferencepowerconstraintineachhopisconsidered.TwosimplifiedversionsfortheSSSAandSSOAschemesareemployedbecauseofthecomplexi
3、tyoftheproblem.Thentwoalgorithmsareproposedthatacquiretheoptimalsensingtimeandpowerallocationforbothschemes.Finally,simulationresultsarepresentedtocomparetheperformanceofthetwoschemes.KeyWords:CognitiveRadio;Cooperativecommunication;Spectrumsensing;Spectralefficiency;Energyeffic
4、iencyIII万方数据目录目录摘要..........................................................................................................IAbstract..................................................................................................II1绪论...........................................
5、........................................................11.1课题研究的背景和意义............................................................................11.2课题研究的主要内容...............................................................................21.3课题的结构及主要内容...........................
6、.................................................32认知无线电网络与协作通信............................................................52.1认知无线电网络.......................................................................................52.1.1认知无线电网络模型...........................................
7、..............................................52.1.1认知无线电频谱感知技术.................................................................................72.1.2认知无线电频谱接入技术...............................................................................102.2协作通信网络............................
8、...............................................
此文档下载收益归作者所有