1 簡介

在簡要介紹了Matlab及計算機(jī)仿真的基礎(chǔ)上,結(jié)合ASK(振幅鍵控),FSK(頻移鍵控),PSK(相移鍵控)、QPSK調(diào)制的相關(guān)原理和技術(shù),提出了運(yùn)用Matlab模擬對振幅鍵控,頻移鍵控,相移鍵控調(diào)制仿真的方法.

2 部分代碼

function varargout = display_signal(varargin)% DISPLAY_SIGNAL MATLAB code for display_signal.fig% ? ? ?DISPLAY_SIGNAL, by itself, creates a new DISPLAY_SIGNAL or raises the existing% ? ? ?singleton*.%% ? ? ?H = DISPLAY_SIGNAL returns the handle to a new DISPLAY_SIGNAL or the handle to% ? ? ?the existing singleton*.%% ? ? ?DISPLAY_SIGNAL('CALLBACK',hObject,eventData,handles,...) calls the local% ? ? ?function named CALLBACK in DISPLAY_SIGNAL.M with the given input arguments.%% ? ? ?DISPLAY_SIGNAL('Property','Value',...) creates a new DISPLAY_SIGNAL or raises the% ? ? ?existing singleton*. ?Starting from the left, property value pairs are% ? ? ?applied to the GUI before display_signal_OpeningFcn gets called. ?An% ? ? ?unrecognized property name or invalid value makes property application% ? ? ?stop. ?All inputs are passed to display_signal_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% Edit the above text to modify the response to help display_signal% Last Modified by GUIDE v2.5 20-Dec-2011 17:01:23% Begin initialization code - DO NOT EDITgui_Singleton = 1;gui_State = struct('gui_Name', ? ? ? mfilename, ... ? ? ? ? ? ? ? ? ? 'gui_Singleton', ?gui_Singleton, ... ? ? ? ? ? ? ? ? ? 'gui_OpeningFcn', @display_signal_OpeningFcn, ... ? ? ? ? ? ? ? ? ? 'gui_OutputFcn', ?@display_signal_OutputFcn, ... ? ? ? ? ? ? ? ? ? 'gui_LayoutFcn', ?[] , ... ? ? ? ? ? ? ? ? ? 'gui_Callback', ? []);if nargin && ischar(varargin{1}) ? ?gui_State.gui_Callback = str2func(varargin{1});endif 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 display_signal is made visible.function display_signal_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 display_signal (see VARARGIN)% Choose default command line output for display_signalhandles.output = hObject;% Update handles structureguidata(hObject, handles);% UIWAIT makes display_signal wait for user response (see UIRESUME)% uiwait(handles.figure1);% --- Outputs from this function are returned to the command line.function varargout = display_signal_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 structurevarargout{1} = handles.output;% --- Executes on selection change in type.function type_Callback(hObject, eventdata, handles)% hObject ? ?handle to type (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: contents = cellstr(get(hObject,'String')) returns type contents as cell array% ? ? ? ?contents{get(hObject,'Value')} returns selected item from type% --- Executes during object creation, after setting all properties.function type_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to type (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 && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor','white');endfunction Fb_Callback(hObject, eventdata, handles)% hObject ? ?handle to Fb (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of Fb as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fb as a double% --- Executes during object creation, after setting all properties.function Fb_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fb (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: edit controls usually have a white background on Windows.% ? ? ? See ISPC and COMPUTER.if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor','white');endfunction Fc_Callback(hObject, eventdata, handles)% hObject ? ?handle to Fc (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?structure with handles and user data (see GUIDATA)% Hints: get(hObject,'String') returns contents of Fc as text% ? ? ? ?str2double(get(hObject,'String')) returns contents of Fc as a double% --- Executes during object creation, after setting all properties.function Fc_CreateFcn(hObject, eventdata, handles)% hObject ? ?handle to Fc (see GCBO)% eventdata ?reserved - to be defined in a future version of MATLAB% handles ? ?empty - handles not created until after all CreateFcns called% Hint: edit controls usually have a white background on Windows.% ? ? ? See ISPC and COMPUTER.if ispc && isequal(get(hObject,'BackgroundColor'), get(0,'defaultUicontrolBackgroundColor')) ? ?set(hObject,'BackgroundColor','white');end

3 仿真結(jié)果

4 參考文獻(xiàn)

[1]丁新, 高丙坤. 基于MATLAB的數(shù)字調(diào)制信號仿真系統(tǒng)設(shè)計[J]. 長江大學(xué)學(xué)報自然科學(xué)版:理工(上旬), 2009.

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