am_dsb_modulation.mdl

用matlab7·0软件对通信信号进行调制simulink仿真

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    Block {
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      OutDataType	      "sfix(16)"
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      RndMeth		      "Floor"
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      UpperSaturationLimit    "inf"
      LowerSaturationLimit    "-inf"
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      RTWStateStorageClass    "Auto"
    }
    Block {
      BlockType		      FrameConversion
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    Block {
      BlockType		      Fcn
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      SampleTime	      "-1"
    }
    Block {
      BlockType		      Gain
      Gain		      "1"
      Multiplication	      "Element-wise(K.*u)"
      ParameterDataTypeMode   "Same as input"
      ParameterDataType	      "sfix(16)"
      ParameterScalingMode    "Best Precision: Matrix-wise"
      ParameterScaling	      "2^0"
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      OutDataType	      "sfix(16)"
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    }
    Block {
      BlockType		      InitialCondition
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    }
    Block {
      BlockType		      Inport
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      OutScaling	      "2^0"
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    Block {
      BlockType		      Math
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      OutDataType	      "sfix(16)"
      OutScaling	      "2^0"
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      RndMeth		      "Floor"
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    }
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    Block {
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    Block {
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      DataType		      "auto"
      OutDataType	      "sfix(16)"
      OutScaling	      "2^0"
      SignalType	      "auto"
      SamplingMode	      "auto"
      OutputWhenDisabled      "held"
      InitialOutput	      "[]"
    }
    Block {
      BlockType		      Product
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      Multiplication	      "Element-wise(.*)"
      InputSameDT	      on
      OutDataTypeMode	      "Same as first input"
      OutDataType	      "sfix(16)"
      OutScaling	      "2^0"
      LockScale		      off
      RndMeth		      "Zero"
      SaturateOnIntegerOverflow	on
      SampleTime	      "-1"
    }
    Block {
      BlockType		      RelationalOperator
      Operator		      ">="
      InputSameDT	      on
      LogicOutDataTypeMode    "Logical (see Configuration Parameters: Optimiza"
"tion)"
      LogicDataType	      "uint(8)"
      ZeroCross		      on
      SampleTime	      "-1"
    }
    Block {
      BlockType		      Scope
      Floating		      off
      ModelBased	      off
      TickLabels	      "OneTimeTick"
      ZoomMode		      "on"
      Grid		      "on"
      TimeRange		      "auto"
      YMin		      "-5"
      YMax		      "5"
      SaveToWorkspace	      off
      SaveName		      "ScopeData"
      LimitDataPoints	      on
      MaxDataPoints	      "5000"
      Decimation	      "1"
      SampleInput	      off
      SampleTime	      "0"
    }
    Block {
      BlockType		      "S-Function"
      FunctionName	      "system"
      PortCounts	      "[]"
      SFunctionModules	      "''"
    }
    Block {
      BlockType		      SignalGenerator
      WaveForm		      "sine"
      TimeSource	      "Use simulation time"
      Amplitude		      "1"
      Frequency		      "1"
      Units		      "Hertz"
      VectorParams1D	      on
    }
    Block {
      BlockType		      SubSystem
      ShowPortLabels	      on
      Permissions	      "ReadWrite"
      PermitHierarchicalResolution "All"
      SystemSampleTime	      "-1"
      RTWFcnNameOpts	      "Auto"
      RTWFileNameOpts	      "Auto"
      SimViewingDevice	      off
      DataTypeOverride	      "UseLocalSettings"
      MinMaxOverflowLogging   "UseLocalSettings"
    }
    Block {
      BlockType		      Sum
      IconShape		      "rectangular"
      Inputs		      "++"
      InputSameDT	      on
      OutDataTypeMode	      "Same as first input"
      OutDataType	      "sfix(16)"
      OutScaling	      "2^0"
      LockScale		      off
      RndMeth		      "Floor"
      SaturateOnIntegerOverflow	on
      SampleTime	      "-1"
    }
    Block {
      BlockType		      Trigonometry
      Operator		      "sin"
      OutputSignalType	      "auto"
      SampleTime	      "-1"
    }
    Block {
      BlockType		      ZeroOrderHold
      SampleTime	      "1"
    }
  }
  AnnotationDefaults {
    HorizontalAlignment	    "center"
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    FontName		    "Helvetica"
    FontSize		    9
    FontWeight		    "normal"
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  }
  System {
    Name		    "AM_DSB_Modulation"
    Location		    [661, 322, 1241, 604]
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    ModelBrowserVisibility  off
    ModelBrowserWidth	    200
    ScreenColor		    "white"
    PaperOrientation	    "landscape"
    PaperPositionMode	    "auto"
    PaperType		    "A4"
    PaperUnits		    "centimeters"
    ZoomFactor		    "100"
    ReportName		    "simulink-default.rpt"
    Block {
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      Name		      "Constant"
      Position		      [436, 120, 464, 150]
      Orientation	      "up"
      NamePlacement	      "alternate"
      ShowName		      off
      Value		      "[2 0 2.8]"
    }
    Block {
      BlockType		      Reference
      Name		      "DSB AM\nModulator\nPassband"
      Ports		      [1, 1]
      Position		      [130, 82, 205, 128]
      SourceBlock	      "commanapbnd2/DSB AM\nModulator\nPassband"
      SourceType	      "DSB AM Modulator Passband"
      ShowPortLabels	      on
      Offset		      "1"
      Fc		      "180"
      Ph		      "pi/3"
    }
    Block {
      BlockType		      Reference
      Name		      "DSBSC AM\nDemodulator\nPassband"
      Ports		      [1, 1]
      Position		      [255, 82, 330, 128]
      SourceBlock	      "commanapbnd2/DSBSC AM\nDemodulator\nPassband"
      SourceType	      "DSBSC AM Demodulator Passband"
      ShowPortLabels	      on
      Fc		      "180"
      num		      "[4.75 9.14 4.75]*.01"
      den		      "[1 -1.3108 .4936]"
      Ph		      "pi/3"
      ts		      "0.001"
    }
    Block {
      BlockType		      Mux
      Name		      "Mux"
      Ports		      [3, 1]
      Position		      [395, 41, 400, 79]
      ShowName		      off
      Inputs		      "3"
      DisplayOption	      "bar"
    }
    Block {
      BlockType		      Scope
      Name		      "Scope"
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      Position		      [510, 69, 540, 101]
      Location		      [18, 191, 785, 692]
      Open		      on
      NumInputPorts	      "1"
      List {
	ListType		AxesTitles
	axes1			"%<SignalLabel>"
      }
      TimeRange		      "1"
      YMin		      "-2.2"
      DataFormat	      "StructureWithTime"
    }
    Block {
      BlockType		      SignalGenerator
      Name		      "Signal\nGenerator"
      Ports		      [0, 1]
      Position		      [40, 90, 70, 120]
      Amplitude		      "0.7"
      Frequency		      "8"
    }
    Block {
      BlockType		      Reference
      Name		      "Spectrum\nScope"
      Ports		      [1]
      Position		      [410, 174, 455, 226]
      SourceBlock	      "dspsnks4/Spectrum\nScope"
      SourceType	      "Spectrum Scope"
      ShowPortLabels	      off
      ScopeProperties	      off
      Domain		      "Frequency"
      HorizSpan		      "1"
      UseBuffer		      on
      BufferSize	      "512"
      Overlap		      "256"
      inpFftLenInherit	      on
      FFTlength		      "512"
      numAvg		      "8"
      DisplayProperties	      off
      AxisGrid		      on
      Memory		      off
      FrameNumber	      on
      AxisLegend	      off
      AxisZoom		      off
      OpenScopeAtSimStart     on
      OpenScopeImmediately    off
      FigPos		      "get(0,'defaultfigureposition')"
      AxisProperties	      on
      XUnits		      "Hertz"
      XRange		      "[0...Fs/2]"
      InheritXIncr	      off
      XIncr		      "1/720"
      XLabel		      "Samples"
      YUnits		      "dB"
      YMin		      "-1"
      YMax		      "20"
      YLabel		      "Magnitude, dB"
      LineProperties	      off
      LineColors	      "[0 0 1]"
    }
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      IconShape		      "round"
      Inputs		      "|++"
      InputSameDT	      off
      OutDataTypeMode	      "Inherit via internal rule"
    }
    Block {
      BlockType		      ZeroOrderHold
      Name		      "Zero-Order\nHold"
      Position		      [295, 181, 330, 219]
      SampleTime	      "1/720"
    }
    Line {
      SrcBlock		      "Mux"
      SrcPort		      1
      Points		      [0, 25]
      DstBlock		      "Sum"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Sum"
      SrcPort		      1
      DstBlock		      "Scope"
      DstPort		      1
    }
    Line {
      SrcBlock		      "Constant"
      SrcPort		      1
      DstBlock		      "Sum"
      DstPort		      2
    }
    Line {
      SrcBlock		      "Signal\nGenerator"
      SrcPort		      1
      Points		      [-5, 0; 30, 0]
      Branch {
	DstBlock		"DSB AM\nModulator\nPassband"
	DstPort			1
      }
      Branch {
	Points			[0, -55]
	DstBlock		"Mux"
	DstPort			1
      }
    }
    Line {
      SrcBlock		      "DSB AM\nModulator\nPassband"
      SrcPort		      1
      Points		      [0, 0; 15, 0]
      Branch {
	DstBlock		"DSBSC AM\nDemodulator\nPassband"
	DstPort			1
      }
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	Points			[0, -45]
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	DstPort			2
      }
      Branch {
	Points			[0, 95]
	DstBlock		"Zero-Order\nHold"
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      }
    }
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      SrcBlock		      "DSBSC AM\nDemodulator\nPassband"
      SrcPort		      1
      Points		      [20, 0; 0, -35]
      DstBlock		      "Mux"
      DstPort		      3
    }
    Line {
      SrcBlock		      "Zero-Order\nHold"
      SrcPort		      1
      DstBlock		      "Spectrum\nScope"
      DstPort		      1
    }
  }
}