Implementation challenges of UWB for sensor networks.ppt

worksLaurentChalard,DidierHélal,Gian-MarioMaggio,YinqweiQiu,LucilleVerbaere-Rouault,ArminWellig,JulienZorySTMicroelectronics,Geneva,worksContentIntroductionMarket/pletemotesolutionST’worksMajorLimitationstoGlobalWirelessSensorAdoptionSourceON-World2004Ease/worksApplicationrequirements'requirements1101001000110100100010000Range(meter)Datarate(kbps)+uracyinside5%ofrangeLowdataratedoesnotmeansimple!worksRegulationNoharmonizationdonebyITU-Rsofar…ECfinaldecisioninMarch2006LowdatarateisstillunderdiscussionsdutycycleMinimumaverageburstrepetitionperiodoveranhour1secMinimuminstantaneousburstrepetitionperiodover1second30to200msemissionlevellimitation--45dBm/worksStandardization(1): poorreliabilityZigbee: plexWiFi: tooexpensiveBT: -bandUWB[DC-960MHz]ChirpSpreadSpectrum[]HighbandUWB[-]worksStandardization(2)(PBTS)-coherentmodeStill6ForwardErrorCorrectionproposals(SuperOrthogonalCodes,Convolutionalcodes)worksFullyintegratedwirelesssensordevicesSmall: <1cm3(System-in-Package)Cheap: <1$(lowcostelectronics)Lowpower: <10mWpeakOperatefromenergyscavenging:<alibrationTEDS-controllerBB+worksSTMicroelectronics–AST(PHY,workingprotocol)working Targetisconvergence!works