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📄 am_sys.mdl

📁 信号实验常用的simulink模型和mfile,可直接在matlan下运行。
💻 MDL
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1234 
	  Location		  [66, 10, 397, 324]
	  Open			  off
	  NumInputPorts		  "1"
	  TickLabels		  "OneTimeTick"
	  ZoomMode		  "on"
	  List {
	    ListType		    AxesTitles
	    axes1		    "%<SignalLabel>"
	  }
	  Grid			  "on"
	  TimeRange		  "1.000000"
	  YMin			  "-2.000000"
	  YMax			  "2.000000"
	  SaveToWorkspace	  off
	  SaveName		  "ScopeData"
	  DataFormat		  "Matrix"
	  LimitMaxRows		  on
	  MaxRows		  "5000"
	  Decimation		  "1"
	  SampleInput		  off
	  SampleTime		  "0"
	}
	Block {
	  BlockType		  Scope
	  Name			  "下边带信号"
	  Ports			  [1, 0, 0, 0, 0]
	  Position		  [430, 160, 460, 190]
	  ForegroundColor	  "green"
	  FontName		  "宋体"
	  FontSize		  12
	  Floating		  off
	  Location		  [61, 154, 392, 468]
	  Open			  off
	  NumInputPorts		  "1"
	  TickLabels		  "OneTimeTick"
	  ZoomMode		  "on"
	  List {
	    ListType		    AxesTitles
	    axes1		    "%<SignalLabel>"
	  }
	  Grid			  "on"
	  TimeRange		  "1.000000"
	  YMin			  "-2.000000"
	  YMax			  "2.000000"
	  SaveToWorkspace	  off
	  SaveName		  "ScopeData"
	  DataFormat		  "Matrix"
	  LimitMaxRows		  on
	  MaxRows		  "5000"
	  Decimation		  "1"
	  SampleInput		  off
	  SampleTime		  "0"
	}
	Block {
	  BlockType		  SignalGenerator
	  Name			  "信号发生器\n频率（弧度/秒）"
	  Position		  [40, 83, 85, 117]
	  ForegroundColor	  "green"
	  FontName		  "宋体"
	  FontSize		  12
	  WaveForm		  "sine"
	  Amplitude		  "1.000000"
	  Frequency		  "10.000000"
	  Units			  "rad/sec"
	}
	Block {
	  BlockType		  Sin
	  Name			  "载波"
	  Position		  [50, 150, 70, 170]
	  ForegroundColor	  "green"
	  FontName		  "宋体"
	  FontSize		  12
	  Amplitude		  "1"
	  Frequency		  "100"
	  Phase			  "0"
	  SampleTime		  "-1"
	}
	Line {
	  SrcBlock		  "信号发生器\n频率（弧度/秒）"
	  SrcPort		  1
	  DstBlock		  "乘法器"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "乘法器"
	  SrcPort		  1
	  Points		  [30, 0]
	  Branch {
	    DstBlock		    "Butterworth\nBP 滤波器 1"
	    DstPort		    1
	  }
	  Branch {
	    Points		    [0, 70]
	    DstBlock		    "Butterworth\nBP 滤波器 2"
	    DstPort		    1
	  }
	}
	Line {
	  SrcBlock		  "Butterworth\nBP 滤波器 2"
	  SrcPort		  1
	  DstBlock		  "下边带信号"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "载波"
	  SrcPort		  1
	  Points		  [60, 0]
	  Branch {
	    Points		    [0, -50]
	    DstBlock		    "乘法器"
	    DstPort		    2
	  }
	  Branch {
	    Points		    [0, 155]
	    DstBlock		    "乘法器1"
	    DstPort		    2
	  }
	}
	Line {
	  SrcBlock		  "Butterworth\nBP 滤波器 1"
	  SrcPort		  1
	  Points		  [25, 0]
	  Branch {
	    DstBlock		    "上边带信号"
	    DstPort		    1
	  }
	  Branch {
	    Points		    [0, 120; -230, 0; 0, 80]
	    DstBlock		    "乘法器1"
	    DstPort		    1
	  }
	}
	Line {
	  SrcBlock		  "乘法器1"
	  SrcPort		  1
	  DstBlock		  "Butterworth\nLP 滤波器"
	  DstPort		  1
	}
	Line {
	  SrcBlock		  "Butterworth\nLP 滤波器"
	  SrcPort		  1
	  DstBlock		  "解调信号"
	  DstPort		  1
	}
	Annotation {
	  Position		  [132, 322]
	  VerticalAlignment	  "top"
	  Text			  "接收端"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [157, 212]
	  VerticalAlignment	  "top"
	  Text			  "发送端"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [67, 242]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "对 SSB 信号，无法\n直接从其中提取参考\n信号"
"，故发送端在发\n射 SSB 信号的同时，\n还须发射受到一定程\n度抑制的载波信号。\n"
"（称为导频信号）"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [397, 72]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "已调 SSB 信号"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [237, 67]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "Y(t) = X(t)*cos(Wc*t+p)"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [122, 82]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "X(t)"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [62, 62]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "调制信号"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [72, 187]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "cos ( Wc * t + p )\nWc 载波角频率\np 载波初"
"始相位"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [247, 117]
	  VerticalAlignment	  "top"
	  ForegroundColor	  "green"
	  Text			  "DSB"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [182, 327]
	  VerticalAlignment	  "top"
	  Text			  "导频信号"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [187, 287]
	  VerticalAlignment	  "top"
	  Text			  "上边带 SSB"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [267, 17]
	  VerticalAlignment	  "top"
	  Text			  "同步调制/解调 AM 系统 （ 单边带 SSB ）—— "
"滤波器法"
	  FontName		  "宋体"
	  FontSize		  12
	}
	Annotation {
	  Position		  [257, 347]
	  VerticalAlignment	  "top"
	  Text			  "同步解调"
	  FontName		  "宋体"
	  FontSize		  12
	}
      }
    }
    Block {
      BlockType		      SubSystem
      Name		      "同步调制/解调系统\n（单边带 SSB）之滤波法"
      Ports		      [0, 0, 0, 0, 0]
      Position		      [330, 69, 441, 146]
      DropShadow	      on
      OpenFcn		      "am_sys3"
      FontName		      "宋体"
      FontSize		      12
      ShowPortLabels	      off
      MaskDisplay	      "disp('AM - SSB\\n（滤波法）')"
      MaskIconFrame	      on
      MaskIconOpaque	      on
      MaskIconRotate	      "none"
      MaskIconUnits	      "autoscale"
      System {
	Name			"同步调制/解调系统\n（单边带 SSB）之滤波法"
	Location		[-10, 380, 117, 533]
	Open			off
	ModelBrowserVisibility	off
	ModelBrowserWidth	200
	ScreenColor		"automatic"
	PaperOrientation	"landscape"
	PaperPositionMode	"auto"
	PaperType		"usletter"
	PaperUnits		"inches"
	ZoomFactor		"100"
	AutoZoom		on
      }
    }
    Block {
      BlockType		      SubSystem
      Name		      "同步调制/解调系统\n（单边带 SSB）之移相法"
      Ports		      [0, 0, 0, 0, 0]
      Position		      [330, 189, 441, 266]
      DropShadow	      on
      OpenFcn		      "am_sys4"
      FontName		      "宋体"
      FontSize		      12
      ShowPortLabels	      off
      MaskDisplay	      "disp('AM - SSB\\n（移相法）')"
      MaskIconFrame	      on
      MaskIconOpaque	      on
      MaskIconRotate	      "none"
      MaskIconUnits	      "autoscale"
      System {
	Name			"同步调制/解调系统\n（单边带 SSB）之移相法"
	Location		[-10, 380, 117, 533]
	Open			off
	ModelBrowserVisibility	off
	ModelBrowserWidth	200
	ScreenColor		"automatic"
	PaperOrientation	"landscape"
	PaperPositionMode	"auto"
	PaperType		"usletter"
	PaperUnits		"inches"
	ZoomFactor		"100"
	AutoZoom		on
      }
    }
    Block {
      BlockType		      SubSystem
      Name		      "同步调制/解调系统\n（双边带 DSB）1"
      Ports		      [0, 0, 0, 0, 0]
      Position		      [222, 500, 305, 556]
      DropShadow	      on
      FontName		      "宋体"
      FontSize		      12
      ShowPortLabels	      off
      MaskDisplay	      "disp('AM\\nSystem - 2')"
      MaskIconFrame	      on
      MaskIconOpaque	      on
      MaskIconRotate	      "none"
      MaskIconUnits	      "autoscale"
      System {
	Name			"同步调制/解调系统\n（双边带 DSB）1"
	Location		[6, 84, 632, 512]
	Open			off
	ModelBrowserVisibility	off
	ModelBrowserWidth	200
	ScreenColor		"automatic"
	PaperOrientation	"landscape"
	PaperPositionMode	"auto"
	PaperType		"usletter"
	PaperUnits		"inches"
	ZoomFactor		"100"
	AutoZoom		on
	Block {
	  BlockType		  StateSpace
	  Name			  "Butterworth\nBP 滤波器"
	  Position		  [120, 209, 180, 251]
	  ForegroundColor	  "yellow"
	  FontName		  "宋体"
	  FontSize		  12
	  A			  "at"
	  B			  "bt"
	  C			  "ct"
	  D			  "dt"
	  X0			  "0"
	  MaskType		  "buttap,lp2bp"
	  MaskDescription	  "Analog Butterworth band pass filter.\n\n(Re"
"quires Signal Processing Toolbox)"
	  MaskHelp		  "Butterworth band pass filter using MATLAB's"
" butter and lp2bp command."
	  MaskPromptString	  "Center frequency (rad/sec)|Bandwidth (rad/s"
"ec):|Order"
	  MaskStyleString	  "edit,edit,edit"
	  MaskTunableValueString  "on,on,on"
	  MaskCallbackString	  "||"
	  MaskEnableString	  "on,on,on"
	  MaskVisibilityString	  "on,on,on"
	  MaskInitialization	  "[at,bt,ct,dt,w,mag]=filtm('buttap','lp2bp',"
"@1,@2,50,@3);"
	  MaskDisplay		  "plot(w,mag)"
	  MaskIconFrame		  on
	  MaskIconOpaque	  on
	  MaskIconRotate	  "none"
	  MaskIconUnits		  "autoscale"
	  MaskValueString	  "200|10|4"
	}
	Block {
	  BlockType		  StateSpace
	  Name			  "Butterworth\nBP 滤波器1"
	  Position		  [355, 209, 415, 251]
	  ForegroundColor	  "yellow"
	  FontName		  "宋体"
	  FontSize		  12
	  A			  "at"
	  B			  "bt"
	  C			  "ct"
	  D			  "dt"
	  X0			  "0"
	  MaskType		  "buttap,lp2bp"
	  MaskDescription	  "Analog Butterworth band pass filter.\n\n(Re"
"quires Signal Processing Toolbox)"
	  MaskHelp		  "Butterworth band pass filter using MATLAB's"
" butter and lp2bp command."
	  MaskPromptString	  "Center frequency (rad/sec)|Bandwidth (rad/s"
"ec):|Order"
	  MaskStyleString	  "edit,edit,edit"
	  MaskTunableValueString  "on,on,on"
	  MaskCallbackString	  "||"
	  MaskEnableString	  "on,on,on"
	  MaskVisibilityString	  "on,on,on"
	  MaskInitialization	  "[at,bt,ct,dt,w,mag]=filtm('buttap','lp2bp',"
"@1,@2,50,@3);"
	  MaskDisplay		  "plot(w,mag)"
	  MaskIconFrame		  on
	  MaskIconOpaque	  on
	  MaskIconRotate	  "none"
	  MaskIconUnits		  "autoscale"
	  MaskValueString	  "100|10|4"
	}
	Block {
	  BlockType		  ZeroPole
	  Name			  "Butterworth\nLP 滤波器"
	  Position		  [395, 338, 455, 382]
	  FontName		  "宋体"
	  FontSize		  12
	  Zeros			  "z"
	  Poles			  "p"
	  Gain			  "k"
	  MaskType		  "buttap"
	  MaskDescription	  "Analog Butterworth low pass filter.\n\n(Req"
"uires Signal Processing Toolbox)"
	  MaskHelp		  "Butterworth low pass filter using MATLAB's "
"butter command."
	  MaskPromptString	  "Cutoff frequency (rad/sec)|Order"
	  MaskStyleString	  "edit,edit"
	  MaskTunableValueString  "on,on"
	  MaskCallbackString	  "|"
	  MaskEnableString	  "on,on"
	  MaskVisibilityString	  "on,on"
	  MaskInitialization	  "[z,p,k]=buttap(@2); z=@1*z; p=@1*p; k=real("
"prod(-p)); [num,den]=zp2tf(z,p,k); w=logspace(log10(@1/10),log10(10*@1),20); "
"h=freqs(num,den,w); "
	  MaskDisplay		  "plot(20*log10(w),20*log10(abs(h)))"
	  MaskIconFrame		  on
	  MaskIconOpaque	  on
	  MaskIconRotate	  "none"
	  MaskIconUnits		  "autoscale"
	  MaskValueString	  "10|4"
	}
	Block {
	  BlockType		  Product
	  Name			  "乘法器"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [225, 89, 255, 111]
	  FontName		  "宋体"
	  FontSize		  12
	  Inputs		  "2"
	  SaturateOnIntegerOverflow on
	  MaskType		  "乘法器"
	  MaskDescription	  "乘法器"
	  MaskDisplay		  "plot([0 1],[1 0],[0 1],[0 1]);"
	  MaskIconFrame		  on
	  MaskIconOpaque	  on
	  MaskIconRotate	  "none"
	  MaskIconUnits		  "autoscale"
	}
	Block {
	  BlockType		  Product
	  Name			  "乘法器2"
	  Ports			  [2, 1, 0, 0, 0]
	  Position		  [260, 349, 290, 371]
	  FontName		  "宋体"
	  FontSize		  12
	  Inputs		  "2"
	  SaturateOnIntegerOverflow on
	  MaskType		  "乘法器"
	  MaskDescription	  "乘法器"
	  MaskDisplay		  "plot([0 1],[1 0],[0 1],[0 1]);"
	  MaskIconFrame		  on
	  MaskIconOpaque	  on
	  MaskIconRotate	  "none"
	  MaskIconUnits		  "autoscale"
	}
	Block {
	  BlockType		  TransportDelay
	  Name			  "传输延迟"
	  Position		  [145, 350, 185, 380]
	  FontName		  "宋体"
	  FontSize		  12
	  DelayTime		  "0.09"
	  InitialInput		  "0"
	  BufferSize		  "1024"
	}
	Block {
	  BlockType		  Scope
	  Name			  "调制后信号波形"
	  Ports			  [1, 0, 0, 0, 0]
	  Position		  [530, 85, 560, 115]
	  FontName		  "宋体"
	  FontSize		  12
	  Floating		  off
	  Location		  [0, 120, 331, 276]
	  Open			  off
	  NumInputPorts		  "1"
	  TickLabels		  "OneTimeTick"
	  ZoomMode		  "on"
	  List {
	    ListType		    AxesTitles
	    axes1		    "%<SignalLabel>"
	  }
	  Grid			  "on"
	  TimeRange		  "1.000000"
	  YMin			  "-2.000000"
	  YMax			  "2.000000"
	  SaveToWorkspace	  off
	  SaveName		  "ScopeData"
	  DataFormat		  "Matrix"
	  LimitMaxRows		  on
	  MaxRows		  "5000"
	  Decimation		  "1"
	  SampleInput		  off
	  SampleTime		  "0"
	}
	Block {
	  BlockType		  MATLABFcn
	  Name			  "二分频"
	  Position		  [255, 211, 325, 249]
	  ForegroundColor	  "yellow"
	  FontName		  "宋体"
	  FontSize		  12
	  MATLABFcn		  "df2"
	  OutputWidth		  "-1"
	  OutputSignalType	  "auto"
	  MaskType		  "分频器"
	  MaskDescription	  "二分频器"
	  MaskDisplay		  "disp('Frequency\\n—————\\n2')"
1234

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