【数字调制信号】基于ASK、PSK、MSK、QPSK数字调制信号仿真含Matlab源码

1 简介

在简要介绍了Matlab及计算机仿真的基础上,结合ASK(振幅键控),FSK(频移键控),PSK(相移键控)、QPSK调制的相关原理和技术,提出了运用Matlab模拟对振幅键控,频移键控,相移键控调制仿真的方法.​

2 部分代码

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});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 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');end​​​function 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');end​​​function 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 仿真结果

4 参考文献

[1]丁新, 高丙坤. 基于MATLAB的数字调制信号仿真系统设计[J]. 长江大学学报自然科学版:理工(上旬), 2009.

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