O_ 正交时频空方案（OTFS）白皮书White Paper on Orthogonal Time Frequency Space (OTFS) Scheme0409.pdf

Contents

1.Introduction2

1.1DocumentStructure2

1.2KeyApplicationScenarios3

2.BasicPrinciplesofOTFS5

2.1PrinciplesofOTFSModulationTransmitter6

2.2PrinciplesofOTFSModulationReceiver8

2.3AnalysisofInput-OutputRelationshipinOTFS10

3.AnalysisofDelayDopplerDomainChannelCharacteristics12

3.1CharacteristicsofDelayDopplerDomainChannel12

3.1.1DeterministicDescriptionofChannels12

3.1.2CoherentandStationaryRegionsofChannels14

3.2DelayDopplerDomainChannelCharacteristicsinHigh-SpeedRailwayScenario15

3.2.1ChannelSpreadingFunctionMeasurementSystemBasedonLTE-R15

3.2.2High-SpeedRailwayChannelSpreadingFunctionCharacterizationBasedonLTE-R17

3.3PerformanceEvaluationofOTFSinMeasuredChannels19

4.OTFSChannelEstimationandDataDetection21

4.1PilotDesignforLow-PAPROTFSChannelEstimation21

4.2Off-gridChannelEstimationforOTFS26

4.3Low-ComplexityOTFSDataDetectionSchemeBasedonExpectationPropagation28

5.ExtensionSchemesofOTFS31

5.1Multi-AntennaOTFSScheme31

5.1.1PilotDesignforMIMO-OTFS31

5.1.2Low-ComplexityandLow-OverheadOTFSTransceiverBasedonMulti-AntennaArray...36

5.2MultipleAccessTechnologySchemeEmpoweredbyOTFS41

5.2.1OrthogonalTime-FrequencyCodeDomainMultipleAccessScheme41

5.2.2OTFS-SCMASystemBasedonMemoryApproximateMessagePassing(MAMP)

Algorithm45

5.3OTFS-EmpoweredIntegratedSensingandCommunication(OTFS-ISAC)Scheme51

5.3.1AdvantagesofOTFS-ISACScheme51

5.3.2OTFS-ISACWaveformDesign52

6.EvolutionSchemesforOTFS55

6.1NewDelayDopplerDomainMulticarrierModulationScheme55

6.2FusionFrameStructureDesignofOTFSandOFDM57

7.SummaryandOutlook62

References64

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