2024 全球6G技术大会 -10.0O White Paper on Orthogonal Time Frequency Space (OTFS) Scheme0409.docx

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Contents

1.Introduction 2

1.1DocumentStructure 2

1.2KeyApplicationScenarios 3

2.BasicPrinciplesofOTFS 5

2.1PrinciplesofOTFSModulationTransmitter 6

2.2PrinciplesofOTFSModulationReceiver 8

2.3AnalysisofInput-OutputRelationshipinOTFS 10

3.AnalysisofDelayDopplerDomainChannelCharacteristics 12

3.1CharacteristicsofDelayDopplerDomainChannel 12

3.1.1DeterministicDescriptionofChannels 12

3.1.2CoherentandStationaryRegionsofChannels 14

3.2DelayDopplerDomainChannelCharacteristicsinHigh-SpeedRailwayScenario 15

3.2.1ChannelSpreadingFunctionMeasurementSystemBasedonLTE-R 15

3.2.2High-SpeedRailwayChannelSpreadingFunctionCharacterizationBasedonLTE-R 17

3.3PerformanceEvaluationofOTFSinMeasuredChannels 19

4.OTFSChannelEstimationandDataDetection 21

4.1PilotDesignforLow-PAPROTFSChannelEstimation 21

4.2Off-gridChannelEstimationforOTFS 26

4.3Low-ComplexityOTFSDataDetectionSchemeBasedonExpectationPropagation 28

5.ExtensionSchemesofOTFS 31

5.1Multi-AntennaOTFSScheme 31

5.1.1PilotDesignforMIMO-OTFS 31

5.1.2Low-ComplexityandLow-OverheadOTFSTransceiverBasedonMulti-AntennaArray 36

5.2MultipleAccessTechnologySchemeEmpoweredbyOTFS 41

5.2.1OrthogonalTime-FrequencyCodeDomainMultipleAccessScheme 41

5.2.2OTFS-SCMASystemBasedonMemoryApproximateMessagePassing(MAMP)

Algorithm 45

5.3OTFS-EmpoweredIntegratedSensingandCommunication(OTFS-ISAC)Scheme 51

5.3.1AdvantagesofOTFS-ISACScheme 51

5.3.2OTFS-ISACWaveformDesign 52

6.EvolutionSchemesforOTFS 55

6.1NewDelayDopplerDomainMulticarrierModulationScheme 55

6.2FusionFrameStructureDesignofOTFSandOFDM 57

7.SummaryandOutlook 62

References 64

ParticipantUnits 66

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1.Introduction

Orthogonalfrequencydivisionmultiplexing(OFDM)