WhatIstheOperationofUltra-Wideband(UWB)Positioning?
YourdeviceshaveasixthsensethankstoUWBThespatialsizeofthesesignalsrangesfrom NANOtoPersonalAreaNetworks(PAN).Duetoitslowpassspectraldensityandnearproximity operationbydesign,UWBoperatesoverawidebandwidth.TheUWBcommunicateswithpeer devicesandcomplieswiththe802165standardTheUWBusespulseradiotosenddataovera widebandwidthinquickburstswhileusingverylittlepowerandavmwarehardwareversion. Bysendingmorepulsespersecond,UWBleverageshighpulserepetitionratestoboost localizationprecisionanddatathroughput
WhyisWidebandIndoorPositioningReceivingMoreAttentionLately?
UWBpositioningsystemsoftenhaveahighdatarateofupto100Megabitspersecond(Mbps), whichmakesthemanexcellentchoicefornear-fielddatatransferUWBisabetteroptionthan othertechnologiesforindoorpositioningbecauseofitshighbandwidthandextremelybrief pulsewaveforms,whichalsoreducetheimpactofmultipathinterferenceandmakeiteasierto determinetheTOAforbursttransmissionbetweenthetransmitterandcorrespondingreceiver Tounambiguouslyexecutemultipathresolution,thelengthofasinglepulsedeterminesthe leastdifferentialpathdelayandtheperiodpulsedeterminesthemaximumobservable multipathdelay.
LegalIssuesRegardingIndoorUWBLocalization
WhileUWBindoorpositioninghasbenefits,UWBapplicationsmustoperatewithinthenarrow frequencyrangeswithalargeUWBfrequencyrangetolessenthelikelihoodofinterference. Therearelicense-exempt(unlicensed)andindividuallylicensedframeworksforcontrollingthe usageofthediversespectrumofRFIDindoorpositioningTheUnitedStates,theEuropean Union,andnumerousnationsintheAsia-Pacifichaveallimplementedlicense-exemptsystems forUWBplacement.Theseframeworksdemandtheuseofuniquemasksandcertain operationalcircumstancesTheFederalCommunicationsCommission,Europeannations,Korea,
andJapanareinagreementthatsuchvastusesrequiretheentire3100to10,600MHzbandor atleastsomeofit.