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MIMO-OFDM系统中自适应功率和比特分配算法的研究的中期报告.docx

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MIMO-OFDM系统中自适应功率和比特分配算法的研究的中期报告 Abstract: InMIMO-OFDMsystems,adaptivepowerandbitallocationalgorithmisanimportantapproachtoimprovethesystemperformance.ThisreportpresentsamidtermreviewoftheresearchontheadaptivepowerandbitallocationalgorithminMIMO-OFDMsystems.Themaincontentsincludetherelatedworkonpreviousresearch,thecurrentprogressoftheresearch,andthefutureresearchdirection. Introduction: Withtherapiddevelopmentofwirelesscommunicationtechnologies,MIMO-OFDMsystemshavebecomeapopulartechniqueforhighdataratewirelesstransmission.InMIMO-OFDMsystems,adaptivepowerandbitallocationalgorithmisanimportantapproachtoimprovethesystemperformance.Theobjectiveofthealgorithmistooptimizethesystemperformancebyallocatingthepowerandbitstothesubcarriersbasedonthechannelconditions. RelatedWork: TherelatedworkontheadaptivepowerandbitallocationalgorithminMIMO-OFDMsystemsmainlyfocusesontwoaspects:powerallocationandbitallocation.Intermsofpowerallocation,variousalgorithmshavebeenproposed,suchasthewater-fillingalgorithm,theiterativewater-fillingalgorithm,andtheadaptivesubcarrierpowerallocationalgorithm.Intermsofbitallocation,themostcommonlyusedalgorithmistheproportionalfairallocationalgorithm. CurrentProgress: ThecurrentprogressoftheresearchontheadaptivepowerandbitallocationalgorithminMIMO-OFDMsystemsincludesthefollowingaspects: 1)Optimizationofpowerandbitallocationalgorithmbasedonchannelestimationaccuracy. 2)Researchontheapplicationofmachinelearninginpowerandbitallocationalgorithm. 3)Researchontheperformanceofthealgorithmunderinterferenceandfading. 4)Investigationoflarge-scaleMIMO-OFDMsystemsandtheirimpactonpowerandbitallocationalgorithm. FutureResearchDirection: Inthefuture,theresearchonadaptivepowerandbitallocationalgorithminMIMO-OFDMsystemsshouldfocusonthefollowingaspects: 1)Optimizationofthealgorithmbasedondifferentchannelmodelsandchannelestimationmethods. 2)Researchontheapplicationofdeeplearningandreinforcementlearninginpowerandbitallocationalgorithm. 3)Optimizationofthealgorithmunderinterfer