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1、IEEETRANSACTIONSONCOMMUNICATIONS,VOL.54,NO.10,OCTOBER20061797Battery-AwareAdaptiveModulationWithQoSConstraintsKaiYangandXiaodongWang,SeniorMember,IEEEAbstract—Weconsidertheproblemofjointbatterymanage-programming(DP)isemployedtoobtaintheoptimaltrans-mentandmodulationoptimizationform
2、aximizingthelifetimemissionschemeadaptingtothechannelandbufferconditions,ofabattery-poweredautonomicwirelesssystemwhilesatisfyingaswellasincomingtrafficrate.In[4],thereinforcementcertainquality-of-serviceconstraints.Ourobjectiveistodesignlearning(RL)methodisappliedtosearchthenear-op
3、timaltheoptimaltransmissionschemesadaptingtothebatterystate,thedelayconstraints,andchannelconditions.Adelay-constrainedtransmissionpolicywhenthegoverningprobabilitiesinthedata-transmissionscenarioisconsidered,wherethebatterystateMDPisunknown.Alltheaboveworksconsiderthebatteryinform
4、ationisonlyavailableatthebeginningoftheentiretrans-asaconstant-energysource,independentofthetransmissionmissionduration.Thecorrespondingproblemisformulatedasmode.However,suchanassumptionmaynothold,inpractice,amultiobjectivestochasticoptimizationproblem,whichishardwherethebatteryene
5、rgyisextractedinvariablepatterns[5].tosolve.WeapproximatelytransformtheoriginalproblemtoIn[6],astochasticmodelisdevelopedtorepresentthebatteryamultiobjectivedeterministicoptimizationproblembyusingalowerboundtoreplacetheobjectivefunctionoftheoriginalcharacteristics,andashapingmethod
6、isproposed.Althoughitproblem.Theoptimal,aswellasefficientsuboptimalsolutionsarecanmaximizetheenergyextractedfromthebattery,itdoesnotdeveloped.Simulationresultsareprovidedtodemonstratethatnecessarilymaximizethenumberofdatapacketstransmittedtheproposedalgorithmscansignificantlyincrease
7、thelifetimeoforsatisfytheQoSrequirements,suchasthetimedelay.Inthebattery-poweredautonomicwirelesssystems.[7],delay-constrainedenergy-efficienttransmissionstrategiesIndexTerms—Adaptivemodulation,batterymanagement,dy-areproposedtomaximizethelifetimeofabattery.However,namicprogramming(
8、DP),Markovdecisionprocess(
