Engineering-Research-Activity2015｜SHINSHU UNIV.

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Manypeopleareusingwirelesscommunicationservicessuchascellular-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 GraduationAsyouknow,thehighspeedinternetaccessisavailableanywhere,anytimesincethesmartphoneshavewidelyspread.However,ifthenumberofsmartphones’userskeepsincreasing,thebasestationwillnotbeabletosupportalltheusers.Asaresult,thesmartphoneservicemaybesuddenlystopped.Thisisaseriousproblem.Thecognitiveradio(CR)canautomaticallyfindandusethevacantwirelesssystemandthusitisquiteintelligent.Wearespecificallyinterestedinthesignalprocessingforrecognizingthewirelessenvironmentandtheconstructionoftheaccessingprotocolfortheefficientusagesoffrequencyspectrumandthehighpowerefficiency.Recently,thewirelessmoduleisappliedtothevariousobjects,suchaselectricalpowermeter,electricalappliances,andvendermachines.Suchcommunicationshasrecentlyattractedmuchattention,andtheyarecalledmachine-tomachine(M2M)anddevice-to-device(D2D)communications..WiththeemergenceofM2MandD2D,thenumberofwirelesscommunicationdevicesincreasesdramatically,sotheCRisbecomingmoreimportantthanever.Therefore,theresearchonCRiscrucialforthefuturewirelesscommunication.OsamuTakyu,Ph.D.AssociateProfessorFrom2004to2005,hewasvisitingscholarintheSchoolofElectricalandInformationEngineering,UniversityofSydney.Hisresearchtopicsarewirelesscommunicationtechnology.Software Define Radio (SDR) can construct the various wireless communication system. So, the system which you consider can be easily evaluatedin the wired experimental system.Intelligent and Self Recovering Wireless Communication Systems: Cognitive RadioResults of Wireless LAN (WLAN) Simulator. The mutual relation between wireless devices can be evaluated by computer simulationThealumnusofourlaboratoryplayactiverolesasresearchersindevelopingthewirelesscommunicationsinthemanufacturingindustriesandwirelesscommunicationvendors.TakyuLabElectrical& ElectronicEngineeringIn the FutureAfter Graduation25

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