Visible Light Communications A Brighter Future

5GWhitePaper:VisibleLightCommunicationsVisibleLightCommunicationsABrighterFutureFuTUREForum5GSIG2019/11/205GWhitePaper:VisibleLightCommunications内容摘要随着无线频谱资源的日益紧张与固态照明技术的迅速发展，可见光通信受到了学术与产业界的重视，是近年研究的热点之一。可见光通信具有大带宽、低能耗、低成本等诸多优势，既是对传统无线通信的有效补充，也是B5G与6G时代的重要备选技术之一。然而，由于可见光通信涉及诸多学科与产业，其在技术与实用化方面仍面临挑战。白皮书对可见光通信进行了系统梳理和分析，以期能细化应用场景，明确主要瓶颈，并探索对应解决途径，推动该技术进一步实用化。白皮书首先论述了可见光通信的整体发展状况。其中，既包括了可见光通信发展史与近年研究进展，也涵盖了可见光通信的主要优势与局限。此外，可见光通信标准化进程也作为重要一环进行了概述。应用场景是可见光通信实用方向的重要引导。白皮书第二章系统讨论了可见光通信的应用场景，并根据不同应用特点，对场景进行了分类，进而分析了每个场景的独有特征和典型案例，明确了未来实用化方向。器件与硬件平台是可见光通信的基础。第三章从器件与平台角度，对可见光通信的光源、探测器件以及硬件平台逐一进行了分析。通过对比，明确了不同器件与设备的优劣和发展现状，并进一步探讨了器件与平台的主要技术瓶颈。可见光通信技术方案是可见光通信的核心。白皮书第四章对可见光通信的不同技术方案与研究进行了简要梳理。由于涉及层面较多，本章仅对部分较为关键与新颖的研究点进行了扼要的介绍，以期把握技术主要脉络与发展趋势。最后一章，对可见光通信面临的技术与产业难题进行了分析。要达到可见光通信的大规模应用，不仅需要突破技术瓶颈，也要依托产学研的紧密结合与跨领域合作。本章提出了一些可能的解决方案，以期进一步推动整体产业的发展与成熟。由于篇幅所限，未能对可见光通信技术与产业进行更深入的分析与研究。谨希望白皮书能够发现并解决一些关键的问题，进一步明确可见光通信面临的挑战，把握可见光通信未来发展趋势，为通信行业的繁荣发展点缀一个更加光明的“未来”。5GWhitePaper:VisibleLightCommunicationsExecutiveSummaryWiththeincreasinglycongestedradiospectrumandrapiddevelopmentofsolid-statelightingtechnology,VisibleLightCommunication(VLC)hasreceivedmuchattentionfromacademiaaswellasindustriesandhasbeenoneoftheresearchhotspotsinrecentyears.Comparedwithtraditionalwirelesscommunications,VLChasmanyadvantagessuchashighbandwidth,lessenergyconsumptionandlowcost.ItisoneofthemostpromisingtechnologiesintheB5Gand6Gera.However,sinceVLCinvolvesmanydisciplinesandindustries,itstillfaceschallengesintermsoftechnologyandpracticality.ThiswhitepapersystematicallyanalyzesVLC,toclarifytheapplicationscenariosandmainbottlenecks,moreover,topromotethefurtherapplicationsofVLC.ThewhitepaperfirstlydiscussestheoveralldevelopmentstatusofVLC,includingabriefhistoryandrecentresearchprogress,aswellasthemainadvantagesandlimitationsofVLC.Besides,thestandardizationprocessisalsooutlinedasanessentialpart.ApplicationscenariosareessentialguidelinesforthepracticaluseofVLC.ThesecondchaptersystematicallydiscussesVLCapplicationsandclassifiesthescenariosaccordingtodifferentapplicationcharacteristics.Uniquefeaturesandtypicalapplicationsofeachscenarioarealsoanalyzedtoclarifythepracticalusedirectionfurther.ComponentsandhardwareplatformsarethebasisofVLC.Thethirdchapteranalyzesthelightsource,detectorandhardwareplatformofVLC.Basedonthecomparisonindifferentaspects,advantages/disadvantagesofdifferentdevicesandequipmentaswellastheirdevelopmentstatusareclarified.Majortechnicalbottlenecksarefurtherexploredaswell.TechnicalsolutionsarethecoreofVLC.Inthefourthchapterofthiswhitepaper,differenttechnicalsolutionsandresearchesonVLCarebrieflysummarized.Duetothemanyaspectsinvolved,thischapteronlyprovidesabriefintroductiontosomeofthekeyandnovelresearchpoints,inordertograspthemainthreadanddevelopmenttrendofVLCtechnology.Inthelastchapter,technicalandindustrialproblemsfacedbyVLCareanalyzedindetail.Toachievelarge-scaleapplicationofVLC,itisnecessarynotonlytobreakthroughtechnicalbottlenecks,butalsotocombineproduction,studyandresearchwithcross-disciplinarycooperation.Thischapterpresentssomepossiblesolutionstopromotethedevelopmentandmaturityoftheoverallindustryfurther.Duetospacelimitations,morein-depthanalysisonVLCtechnologyandindustryarenotconductedinthiswhitepaper.Hopefully,thewhitepapercanidentifysomekeyissuesandfurtherclarifychallengesanddevelopmenttrendsofVLC.Withourjointeffort,VLCwillhelpembellishabrighter“FuTURE”oftheICDTindustry.5GWhitePaper:VisibleLightCommunicationsTableofContents1Introduction.......................................................................................................11.1HistoryandBackground...............................................................................11.2ConceptsandAdvantages.............................................................................31.3StandardsandOrganizations........................................................................72ScenariosandApplications...............................................................................82.1Overview......................................................................................................82.2HighDataRateWirelessAccess..................................................................92.3RF-constrainedWirelessAccess..................................................................92.4VLCEnabledApplications.........................................................................113SystemOverviewandKeyComponents.......................................................133.1SystemOverview.......................................................................................133.2VLCTransmitter.........................................................................................153.3VLCReceiver.............................................................................................183.4HardwarePlatform.....................................................................................194KeyTechnologiesandSolutions.....................................................................