基于ＯFDＭ的室内可见光通信系统调光控制技术 5.docx

作者姓名：基于ＯFDＭ的室内可见光通信系统调光控制技术××届××专业毕业设计31基于ＯFDＭ的室内可见光通信系统调光控制技术摘要本文研究了OFDM在不同应用场景下的室内可见光通信系统，以及介绍了各种调光控制技术，并结合OFDM技术应用在可见光中领域。针对可见光通信对高速数据传输的要求，将OFDM技术引入可见光通信，并针对可见光通信对传输信号极性的相关特性，研究了单极OFDM系统在可见光通信中的应用。详细分析了可见光OFDM系统的工作原理，从多个角度分析比较了几种0FDM系统的性能。为了满足可见光通信对通信和照明的双重要求，本文研究了光OFDM系统中采用的调光控制技术的系统性能和调光性能，并提出了最适合室内可见光通信的光OFDM系统的调光控制方案。结果发现。更符合节能理念的绿色照明室内VLC高速数据传输调光控制方案。本文的创新工作是将可见光通信系统的调光控制技术应用于目前国内外尚未报道的U-0FDM系统。本文提出了一种更有效的ZACO-OFDM系统，来作为0FDM传输系统应用于室内可见光领域。实践证明，该系统在不牺牲系统可靠性的前提下，可以提高系统的电能效率，节约能源。关键词：OFDM；ZACO-OFDM；ZACO-OFDM；VLC；调光控制技术ABSTRACTInthispaper,theindoorvisiblecommunicationsystemofOFDMunderdifferentapplicationscenariosisstudied,andvariousdimmingcontroltechnologiesareintroduced,whichareappliedinthefieldofvisiblelightincombinationwithOFDMtechnology.Aimingattherequirementofhighspeeddatatransmissioninvisiblelightcommunication,OFDMtechnologyisintroducedintovisiblelightcommunication,andtheapplicationofunipolarOFDMsysteminvisiblelightcommunicationisstudiedaccordingtothecorrelationcharacteristicsofvisiblelightcommunicationtotransmissionsignalpolarity.TheworkingprincipleofvisiblelightOFDMsystemisanalyzedindetail,andtheperformanceofseveral0FDMsystemsisanalyzedandcomparedfrommultipleangles.Inordertomeetthedualrequirementsofvisiblelightcommunicationforcommunicationandlighting,thispaperstudiesthesystemperformanceanddimmingperformanceofdimmingcontroltechnologyusedinopticalOFDMsystem,andputsforwardthedimmingcontrolschemeofopticalOFDMsystemwhichismostsuitableforindoorvisiblelightcommunication.Theresultswerefound.Moreinlinewiththeconceptofenergy-savinggreenlightingindoorVLChigh-speeddatatransmissiondimmingcontrolscheme.TheinnovativeworkofthispaperistoapplythedimmingcontroltechnologyofvisiblelightcommunicationsystemtotheU-0FDMsystemwhichhasnotbeenreportedathomeandabroad.Inthispaper,amoreeffectiveZACO-OFDMsystemisproposedtobeusedasa0FDMtransmissionsysteminthefieldofindoorvisiblelight.Practicehasprovedthatthesystemcanimprovethepowerefficiencyofthesystemandsaveenergywithoutsacrificingthe