SingleCarrierFrequencyDivisionMul5pleAccess(SC‐FDMA)forFilterBankMul5carrier

Communica5onSystems

ChungHim(George)Yuen,PooyanAmini,andBehrouzFarhang‐BoroujenyECEDepartment,UnivofUtahE‐mail:farhang@ece.utah.edu

Outline

•  SC‐FDMA

•  SC‐FBMC

•  Numericalresults

•  Conclusion

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SC‐FDMASC‐FDMA(SinglecarrierOFDM),proposedin3GPPLTE,isusedtoreducepeak‐to‐averagepowerra5o(PAPR)

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SC‐FDMA(SinglecarrierOFDM),proposedin3GPPLTE,isusedtoreducepeak‐to‐averagepowerra5o(PAPR)

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Analysisfilterbank

Synthesisfilterbank

SC‐FDMA

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SC‐FDMA

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DFT+roll‐offshaping

SC‐FDMA

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DFT+roll‐offshaping

ExpandtolengthN

SC‐FDMA

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SC‐FDMA

SC‐FBMC(SingleCarrierFBMC)

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SC‐FBMC(SingleCarrierFBMC)

DoesnotleadtoagoodPAPR

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SC‐FBMC(SingleCarrierFBMC)

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SC‐FBMC(SingleCarrierFBMC)

Becauseofthedecimatorsandexpandersaliasingoccursandleadstoanineffec5vemethodforPAPRreduc5on

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SC‐FBMC(SingleCarrierFBMC)

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SC‐FBMC(SingleCarrierFBMC)

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SC‐FBMC(SingleCarrierFBMC)

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OffsetQAMmodulator

NumericalResultsComparisonsFFTsize:512#ofusedSC:128

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NumericalResults

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SMT (or OFDM/OQAM) useso!set QAM for modulation

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ComparisonsFFTsize:512#ofusedSC:128

NumericalResults

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Conclusion

•  WenotedthatSC‐FDMAisananalysis‐synthesismethodforreducingPAPRinOFDMA.

•  SC‐FBMCwasintroducedanddevelopedasadualtoSC‐FDMA.

•  ItwasfoundthatSC‐FBMC,ifimplementedcorrectly,canleaduptoabout4dBgainoverSC‐FDMA.

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