2010_An Energy Efficient Sub-band based UWB Receiver .pdf

《2010_An Energy Efficient Sub-band based UWB Receiver .pdf》由会员上传分享，免费在线阅读，更多相关内容在学术论文-天天文库。

1、AnEnergyEfficientSub-bandbasedUWBReceiveranditsPerformanceImprovementbyInterferenceRejectionFilteringDebaratiSen,JineshP.Nair,KiranBynam,ArunNaniyatSamsungIndiaSoftwareOperationsPvt.Ltd.,Bangalore,India{debarati.sen,jinesh.p,kiran.bynam,arun.naniyat}@samsung.comAbstract—Asub

2、-bandbasedultrawideband(SUWB)systemisflexibilitytotheimplementationofthetechnologydependingproposedforenergyefficientshortrangewirelessontherequirementscomparedwithIR-UWB.communications.Theproposedtechniquedividesthebandwidthof500MHzintonumberofsub-bandsthatmaybeutilizedforA

3、northogonalspreadingcodebasedlowpowerreceiverishigherdatarateorhigherreliabilityormultiuseraccessproposedtofurtherreducethereceivercomplexity.Thedependingonsystemrequirements.Theenergyefficiencyispropertiesofthespreadingsequencesrequiredforinterferenceachievedbyreducingthesa

4、mplingraterequirementsandalsobyrejectionandmulti-pathcancellationaredescribed.In[1],itistheuseofanorthogonalcodebasedinterferencerejectionandseenthattheperformancedegradesasthedataratemulti-pathcancellationreceiver.Aninterferencerejectionrequirementsand/orthechanneldelayspre

5、adincreases.Hencemethodisalsoproposedtofurtherenhancetheperformanceofthesystemforhighdatarateand/orhighdelayspreadchannels.thereisaneedtomitigatethiseffectwithminimumincreaseThisresultsinalowpowerandlowcomplexalternativetointhecomplexity.Weproposeaninterferencerejectionimpro

6、veperformanceincomparisontotheconventionalfiltering(IRF)methodinordertoreducetheperformanceequalizationmethods.ThesimulationresultsintermsoftheBERdegradationinasimplemanner.ThemethodisincorporatedperformanceofthemethodfortheIEEE802.15.4achannelintothede-spreadingprocesstorem

7、ovetheunwantedsub-modelsarepresented.AsignificantimprovementinSNRof5-7bandinterferenceandoutofbandnoise.SincethefilterisdBisreportedwiththeincorporationoftheinterferenceusedatthesub-bandsamplingrateandtypicallyhasafewrejectionfilterforlowandmediumdelayspreadchannels.taps,itr

8、esultsinalowpowersolutiontoobtainanenhancedperformanceordatarate.Keywords—S