dsb.m

DSB调制

function varargout = DSB(varargin)
% DSB M-file for DSB.fig
%      DSB, by itself, creates a new DSB or raises the existing
%      singleton*.
%
%      H = DSB returns the handle to a new DSB or the handle to
%      the existing singleton*.
%
%      DSB('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in DSB.M with the given input arguments.
%
%      DSB('Property','Value',...) creates a new DSB or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before DSB_OpeningFunction gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to DSB_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Copyright 2002-2003 The MathWorks, Inc.

% Edit the above text to modify the response to help DSB

% Last Modified by GUIDE v2.5 04-Dec-2008 14:07:45

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', @DSB_OpeningFcn, ...
                   'gui_OutputFcn',  @DSB_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
    gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT


% --- Executes just before DSB is made visible.
function DSB_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to DSB (see VARARGIN)

% Choose default command line output for DSB
bg=imread('DSB.bmp');
axes(handles.axes1);
imshow(bg);
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes DSB wait for user response (see UIRESUME)
% uiwait(handles.figure1);


% --- Outputs from this function are returned to the command line.
function varargout = DSB_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure
varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes during object creation, after setting all properties.
function axes1_CreateFcn(hObject, eventdata, handles)
% hObject    handle to axes1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: place code in OpeningFcn to populate axes1




% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%t<-[0,2pi]
if get(handles.popupmenu3,'value')==1  
    warndlg('请确认可选变量BW')
end
if get(handles.popupmenu4,'value')==1
    warndlg('请确认可选变量FC')
end
t=linspace(0,2*pi,256);
if get(handles.popupmenu4,'value')==2
    FC=5
elseif get(handles.popupmenu4,'value')==3
FC=10
elseif get(handles.popupmenu4,'value')==4
FC=15
end
if get(handles.popupmenu3,'value')==2
    BW=sin(t*5)
elseif get(handles.popupmenu3,'value')==3
BW=sin(t*10)
elseif get(handles.popupmenu3,'value')==4
BW=sin(t*20)
 end
m=BW;
sm=m.*cos(2*pi*FC*t);
mo=sm.*cos(2*pi*FC*t);
figure(1)
subplot(2,1,1);
plot(sm);
title('Plot of u(t)'); 
xlabel('time'); 
ylabel('voltage'); 
subplot(2,1,2);
plot(abs(fft(sm,256)));
xlabel('frequency'); 
ylabel('voltage'); 



% --- Executes on button press in pushbutton3.
function pushbutton3_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%t<-[0,2pi]
if get(handles.popupmenu3,'value')==1  
    warndlg('请确认可选变量BW')
end
if get(handles.popupmenu4,'value')==1
    warndlg('请确认可选变量FC')
end
t=linspace(0,2*pi,256);
if get(handles.popupmenu4,'value')==2
    FC=5
elseif get(handles.popupmenu4,'value')==3
FC=10
elseif get(handles.popupmenu4,'value')==4
FC=15
end
if get(handles.popupmenu3,'value')==2
    BW=sin(t*5)
elseif get(handles.popupmenu3,'value')==3
BW=sin(t*10)
elseif get(handles.popupmenu3,'value')==4
BW=sin(t*20)
 end
m=BW;
sm=m.*cos(2*pi*FC*t);
mo=sm.*cos(2*pi*FC*t);
figure(1)
subplot(2,1,1);
plot(mo);
title('Plot of carrier modulated by cosewave (DSB)'); 
xlabel('time'); 
ylabel('voltage'); 
subplot(2,1,2);
plot(abs(fft(mo,256)));
xlabel('frequency'); 
ylabel('voltage'); 




% --- Executes on button press in pushbutton4.
function pushbutton4_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)



% --- Executes on button press in pushbutton5.
function pushbutton5_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton5 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% --- Executes on button press in pushbutton7.
function pushbutton7_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton7 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%t<-[0,2pi]
if get(handles.popupmenu3,'value')==1  
    warndlg('请确认可选变量BW')
end
t=linspace(0,2*pi,256);
if get(handles.popupmenu3,'value')==2
    BW=sin(t*5)
elseif get(handles.popupmenu3,'value')==3
BW=sin(t*10)
elseif get(handles.popupmenu3,'value')==4
BW=sin(t*20)
 end
m=BW;
figure(1);
subplot(2,1,1);
plot(m);
title('Plot of m(t) '); 
xlabel('time'); 
ylabel('voltage'); 
subplot(2,1,2);
plot(abs(fft(m,256)));
xlabel('frequency'); 
ylabel('voltage'); 


% --- Executes on button press in pushbutton8.
function pushbutton8_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton8 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)


% --- Executes on button press in pushbutton9.
function pushbutton9_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton9 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)




% --- Executes on button press in pushbutton10.
function pushbutton10_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton10 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
%t<-[0,2pi]
if get(handles.popupmenu3,'value')==1  
    warndlg('请确认可选变量BW')
end
if get(handles.popupmenu4,'value')==1
    warndlg('请确认可选变量FC')
end
t=linspace(0,2*pi,256);
if get(handles.popupmenu4,'value')==2
    FC=5
elseif get(handles.popupmenu4,'value')==3
FC=10
elseif get(handles.popupmenu4,'value')==4
FC=15
end
if get(handles.popupmenu3,'value')==2
    BW=sin(t*5)
elseif get(handles.popupmenu3,'value')==3
BW=sin(t*10)
elseif get(handles.popupmenu3,'value')==4
BW=sin(t*20)
 end
m=BW;
sm=m.*cos(2*pi*FC*t);
mo=sm.*cos(2*pi*FC*t);
[b,a]=cheby1(12,0.5,100/500);  
mo1=filter(b,a,mo);   
figure(1)
subplot(2,1,1);
plot(mo1);
title('Plot of y(t)'); 
xlabel('time'); 
ylabel('voltage'); 
subplot(2,1,2);
plot(abs(fft(mo1,256))); 
xlabel('frequency'); 
ylabel('voltage'); 





% --- Executes on selection change in popupmenu3.
function popupmenu3_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu3 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu3


% --- Executes during object creation, after setting all properties.
function popupmenu3_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu3 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end


% --- Executes on selection change in popupmenu4.
function popupmenu4_Callback(hObject, eventdata, handles)
% hObject    handle to popupmenu4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: contents = get(hObject,'String') returns popupmenu4 contents as cell array
%        contents{get(hObject,'Value')} returns selected item from popupmenu4


% --- Executes during object creation, after setting all properties.
function popupmenu4_CreateFcn(hObject, eventdata, handles)
% hObject    handle to popupmenu4 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    empty - handles not created until after all CreateFcns called

% Hint: popupmenu controls usually have a white background on Windows.
%       See ISPC and COMPUTER.
if ispc
    set(hObject,'BackgroundColor','white');
else
    set(hObject,'BackgroundColor',get(0,'defaultUicontrolBackgroundColor'));
end


% --- Executes on button press in pushbutton11.
function pushbutton11_Callback(hObject, eventdata, handles)
if get(handles.popupmenu1,'value')==1  
    warndlg('请确认可选变量FC')
end
if get(handles.popupmenu2,'value')==1
    warndlg('请确认可选变量SM')
end
% hObject    handle to pushbutton11 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)