Engineering-Research-Activity2016｜SHINSHU UNIV.

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Radiowavesarenotvisible,butveryusefulforcellphonesandwirelesscommunications.Ourresearchsubjectintroducedhereis“visiblelightcommunications”.TheinformationcanbecarriedbythevisiblelightemittedfromanLEDbyturningiton/offbasedontheinformationdata.Becauseyouseethelight,youknowwheretheinformationisfrom,andifyouhavetroublereceivingtheinformation,youknowwherethesourceofthetroubleis.Andtheinformationdoesnotreachinthedirectionwhereyoublockthelight(confidentiality).Inaddition,youcancommunicatewitheachotherunderwater,throughtheglass,andeveninplacesprohibitedtouseradiowavessuchashospitals,aslongasthelightreaches..Energy-savingLEDlampsareinstalledeverywhere.SoifsuchLEDlampsareequippedwiththevisiblelightcommunicationfunction,theycansendoutthesignalsofterrestrialdigitalbroadcastingandpositioningsignalslikeGPSinsteadofradiosignals.Andyouwillbeabletogetthedetailedmapofthesurroundingareaunderthestreetlamps.Visiblelightcommunicationisarelativelynewtechnology,soitsfuturedependsontheideasofyoungpeople.ShiroHandaProfessorsince 2005,after KobeUniversity andNagano National College of Technology. His current research interest is the development of visible light communications.Experiment of visible light communications: Since we need neither wireless-workers license nor radio station license , communication experiment can be done freely in the laboratory.Visible Light Communications（Information transmission by LED light）Experiment of visible light communication over long distance: The world record is 42.19km that is attained by co-working company. We am challenging to satellite communications.Thestudentsgraduatedfromourlabare“workinghardandplayinghard”,whichisourmotto.Theyareactiveintheareasofelectronicsandcommunications,workingatradioequipmentmanufacturersandmobileservice,railroad,electricpowercompanies.HandaLabElectrical& ElectronicEngineeringIn the FutureAfter GraduationManypeopleareusingwirelesscommunicationservicessuchascellular-phone/smartphonecommunications,terrestrialdigitalbroadcasting,andwirelessLAN(Wi-Fi)onadailybasis.Theseservicesaresupportedbymanywirelesstechnologiessuchasspreadspectrum,OFDManddiversitycombining.Inthislab,wetheoreticallyinvestigatetheperformancesofthosetechnologiesinordertorealizeanewwirelesscommunicationsystemwithusabilityandefficiency.Cellular-phones/smartphonescommunication,terrestrialdigitalbroadcastingandwirelessLANservicesrequirehigh-speed(broadband)wirelesschannelsandexclusiveterminals.However,atrackingsystemforchildren’ssecurity/safetyandanautomaticmeteringsystemforelectricity/gas/waterdon’trequirethem.Wetakeatheoreticalapproachtoexploreawirelesssystemthatusesalow-speedchannelsuchasafree-ofchargevoicechannel,asitconsumeslessenergy,thusischeaperandalsoiseasiertouse,FumihitoSasamoriAssociateProfessorReceivedDr.Eng.degreefromWasedaUniv.in2000.ResearchAssociatesince2000andAssociateProf.since2006withShinshuUniv.Researchinterestsincludedigitalmobilecommunicationssystems.We design and implement an OFDM digital signal processing on a microcontroller over voice grade analog channels of PHS.Theoretical Approach to Realize Wireless Communication with Usability and EfficiencyIn order to simulate wireless systems, we build a PC cluster with which many PCs can be virtually viewed as a high spec computer.Wirelesscommunicationengineersareinhighdemandinnumerouscompaniessuchastele-communicationscarriers,railwaycompanies,electricpowercompanies,andelectricalmanufacturers.Wirelesstechnologiescanbeappliedinvariousfieldsofengineering,sosomegraduateschangetheircareersforcareerenhancement.SasamoriLabElectrical& ElectronicEngineeringIn the FutureAfter Graduation24

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