com_dimo.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=com_dimo(t,x,u,flag);
%COM_DIMO     is the M-file description of the SIMULINK system named COM_DIMO.
%       The block-diagram can be displayed by typing: COM_DIMO.
%
%       SYS=COM_DIMO(T,X,U,FLAG) returns depending on FLAG certain
%     system values given time point, T, current state vector, X,
%    and input vector, U.
%   FLAG is used to indicate the type of output to be returned in SYS.
%
%    Setting FLAG=1 causes COM_DIMO to return state derivatives, FLAG=2
%     discrete states, FLAG=3 system outputs and FLAG=4 next sample
%  time. For more information and other options see SFUNC.
%
%       Calling COM_DIMO with a FLAG of zero:
%  [SIZES]=COM_DIMO([],[],[],0),  returns a vector, SIZES, which
%  contains the sizes of the state vector and other parameters.
%           SIZES(1) number of states
%              SIZES(2) number of discrete states
%             SIZES(3) number of outputs
%             SIZES(4) number of inputs
%              SIZES(5) number of roots (currently unsupported)
%               SIZES(6) direct feedthrough flag
%               SIZES(7) number of sample times
%
%       For the definition of other parameters in SIZES, see SFUNC.
%    See also, TRIM, LINMOD, LINSIM, EULER, RK23, RK45, ADAMS, GEAR.

% Note: This M-file is only used for saving graphical information;
%       after the model is loaded into memory an internal model
%       representation is used.

% the system will take on the name of this mfile:
sys = mfilename;
new_system(sys)
simver(1.3)
if (0 == (nargin + nargout))
     set_param(sys,'Location',[19,85,381,664])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '999999')
set_param(sys,'Min step size', '0.0001')
set_param(sys,'Max step size', '10')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')


%     Subsystem  ['Single sided',13,'MASK',13,'demodulation'].

new_system([sys,'/',['Single sided',13,'MASK',13,'demodulation']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation']],'Location',[236,108,954,316])

add_block('built-in/Inport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/in_2']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/in_2']],...
            'Port','2',...
          'position',[70,135,90,155])


%     Subsystem  ['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector'].

new_system([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],'Location',[303,485,692,659])

add_block('built-in/Outport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/out_1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/out_1']],...
         'position',[340,25,360,45])

add_block('built-in/Relational Operator',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator1']],...
         'position',[200,88,230,112])

add_block('built-in/Relational Operator',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator2']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator2']],...
                'Operator','>',...
              'position',[265,23,295,47])

add_block('built-in/Constant',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/one1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/one1']],...
              'Value','thld',...
              'position',[30,135,60,155])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Memory1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Memory1']],...
          'position',[125,80,165,110])

add_block('built-in/Inport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/in_1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/in_1']],...
               'position',[10,15,30,35])

add_block('built-in/Relational Operator',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector/Relational',13,'Operator']],...
             'position',[135,18,165,42])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[35,25;130,25])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[45,25;45,95;120,95])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[170,95;195,95])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[65,145;100,145;100,35;130,35])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[100,145;180,145;180,105;195,105])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[170,30;260,30])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[235,100;240,100;240,40;260,40])
add_line([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],[300,35;335,35])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],...
          'Mask Display','Edge\ndetector',...
             'Mask Type','Edge Detection',...
                'Mask Dialogue','Rising edge detection:|Threshold:')
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],...
              'Mask Translate','thld=@1;')
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],...
              'Mask Help','When the input signal rising edge passed the given shreshold, this block outputs one, otherwise outputs zero.')
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],...
              'Mask Entries','thld\/')


%     Finished composite block ['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector'].

set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Rising edge',13,'detector']],...
            'ForeGround',4,...
              'position',[170,123,230,167])

add_block('built-in/Inport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/in_1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/in_1']],...
          'position',[15,35,35,55])

add_block('built-in/Transfer Fcn',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Transfer Fcn']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Transfer Fcn']],...
                'Numerator','num',...
           'Denominator','den',...
         'position',[75,25,130,65])


%     Subsystem  ['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector'].

new_system([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector']],'Location',[4,135,827,505])

add_block('built-in/Note',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/average']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/average']],...
               'ForeGround',4,...
              'position',[510,70,515,75])

add_block('built-in/Outport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/out_1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/out_1']],...
             'position',[690,50,710,70])

add_block('built-in/Switch',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch4']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch4']],...
          'ForeGround',4,...
              'Threshold','eps',...
           'position',[620,114,645,146])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory4']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory4']],...
                'orientation',2,...
             'ForeGround',4,...
              'position',[610,170,650,200])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory5']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory5']],...
                'orientation',2,...
             'ForeGround',4,...
              'position',[745,180,785,210])

add_block('built-in/Switch',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch5']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch5']],...
                'ForeGround',4,...
              'Threshold','eps',...
           'position',[750,124,775,156])

add_block('built-in/Gain',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Gain']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Gain']],...
                'Gain','1/3',...
                'position',[520,106,565,134])

add_block('built-in/Sum',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Sum5']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Sum5']],...
         'inputs','+++',...
              'position',[470,102,490,138])

add_block('built-in/Inport',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/in_1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/in_1']],...
              'position',[20,100,40,120])

add_block('built-in/Note',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/find peak']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/find peak']],...
                'ForeGround',2,...
              'position',[385,45,390,50])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory2']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory2']],...
          'orientation',2,...
             'ForeGround',2,...
              'position',[365,155,405,185])

add_block('built-in/Switch',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Switch']],...
          'ForeGround',2,...
              'Threshold','eps',...
           'position',[375,94,400,126])

add_block('built-in/Relational Operator',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Relational',13,'Operator1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Relational',13,'Operator1']],...
                'ForeGround',2,...
              'Operator','>',...
              'position',[300,98,330,122])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory1']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory1']],...
         'ForeGround',2,...
              'position',[240,125,280,155])

add_block('built-in/Relational Operator',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Relational',13,'Operator']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Relational',13,'Operator']],...
         'ForeGround',2,...
              'position',[180,93,210,117])

add_block('built-in/Memory',[sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory']])
set_param([sys,'/',['Single sided',13,'MASK',13,'demodulation/Average envelop',13,'detector/Memory']],...