简介：Withtheobjectiveoftakingfulluseofchannelresource,weproposedtwoutilitybaseddynamicsubcarrierallocation(DSA)algorithmsforthesinglecarrierfrequencydivisionmultipleaccess(SC-FDMA)system,whicharetheproportionalfairfrugalityconstrained(PF-FC)algorithmandtheweightedproportionalfairfrugalityconstrained(WPF-FC)algorithm.Thetwoproposedalgorithmsaredesignedunderthefrugalityconstraint(FC)controlconsiderationsoastoavoidserviceratewasteandimprovethespectrumefficiency.Moreover,thequeuingbuffermodelinthispaperisestablishedonafinitesizestructureratherthanthetraditionalinfinitequeuingmanner,whichismoreconsistentwiththepracticaltransmissioncondition.Simulationresultsindicatethatthetwoproposedalgorithmscanbothachievesignificantlybettersystemrate-sumcapacityandqualityofservice(QoS)performancethantheirprimaryalgorithms,andaremoreapplicablefortheheterogeneoustraffic.