tddmmfsk.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=tddmmfsk(t,x,u,flag);
%TDDMMFSK	is the M-file description of the SIMULINK system named TDDMMFSK.
%	The block-diagram can be displayed by typing: TDDMMFSK.
%
%	SYS=TDDMMFSK(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 TDDMMFSK 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 TDDMMFSK with a FLAG of zero:
%	[SIZES]=TDDMMFSK([],[],[],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',[300,229,1003,459])
     open_system(sys)
end;
set_param(sys,'algorithm',     'RK-45')
set_param(sys,'Start time',    '0.0')
set_param(sys,'Stop time',     '999')
set_param(sys,'Min step size', 'ts')
set_param(sys,'Max step size', 'ts')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')
set_param(sys,'Load callback','ts=.01;td=.2;M=8;Fc=100/2/pi;');


%     Subsystem  ['Sampled read',13,'from wksp'].

new_system([sys,'/',['Sampled read',13,'from wksp']])
set_param([sys,'/',['Sampled read',13,'from wksp']],'Location',[355,528,737,675])

add_block('built-in/S-Function',[sys,'/',['Sampled read',13,'from wksp/Message source']])
set_param([sys,'/',['Sampled read',13,'from wksp/Message source']],...
		'BackGround',5,...
		'function name','trigwksp',...
		'parameters','var,thd,cyclFlag,ini',...
		'Mask Display','Triggered\nread',...
		'Mask Type','Read from workspace')
set_param([sys,'/',['Sampled read',13,'from wksp/Message source']],...
		'Mask Dialogue','The raising edge of input pulse trigger the block output the next row from the workspace variable.|Read the variable:|Threshold for the input pulse:|Cyclic read variable (1) or amend zeros (0).|Output before first trigger:')
set_param([sys,'/',['Sampled read',13,'from wksp/Message source']],...
		'Mask Translate','var=@1;thd=@2;cyclFlag=@3;ini=@4;')
set_param([sys,'/',['Sampled read',13,'from wksp/Message source']],...
		'Mask Help','This block reads the data from a workspace variable. The output is refreshed at the raising edge of the input pulse.',...
		'Mask Entries','var\/.1\/cyc\/ini\/')
set_param([sys,'/',['Sampled read',13,'from wksp/Message source']],...
		'position',[180,53,255,97])

add_block('built-in/Outport',[sys,'/',['Sampled read',13,'from wksp/out_1']])
set_param([sys,'/',['Sampled read',13,'from wksp/out_1']],...
		'position',[295,65,315,85])


%     Subsystem  ['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1'].

new_system([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']])
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],'Location',[55,192,283,286])

add_block('built-in/Outport',[sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1/Outport']])
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1/Outport']],...
		'position',[160,35,180,55])

add_block('built-in/S-Function',[sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1/S-function1']])
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1/S-function1']],...
		'function name','homopuls',...
		'parameters','samp_time, out_divid, offset',...
		'position',[40,31,105,59])
add_line([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],[110,45;155,45])
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'Mask Display','Vector\nPulse',...
		'Mask Type','Pulse generator')
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'Mask Dialogue','Vector pulses with sample rate of each pulse as Sample_time ./Divider. |Sample time (scalar, sec):|Divider (integer vector):|Offset (have same dimension as Divider:')
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'Mask Translate','samp_time=@1;out_divid=@2;offset=@3;')
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'Mask Help','This block generator a vector pulses. The output length is the same as the vector defined in "Divider". The ith element of the output has the sample time Sample_time/Divider(i). All elements in "Divider" must be integers.')
set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'Mask Entries','ts\/1\/off\/')


%     Finished composite block ['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1'].

set_param([sys,'/',['Sampled read',13,'from wksp/Pulses deivide',13,'same sample time1']],...
		'position',[50,56,110,94])
add_line([sys,'/',['Sampled read',13,'from wksp']],[115,75;175,75])
add_line([sys,'/',['Sampled read',13,'from wksp']],[260,75;290,75])
set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'Mask Display','plot(0,0,100,100,x,y);Rd wksp',...
		'Mask Type','Read from workspace')
set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'Mask Dialogue','Read from a workspace variable at\nsampling time point.|Variable (column_number=block_output_length):|Data output sample time (sec):|Cyclic control (1: cyclic read, 0: output zeros after eof).|Initial output:')
set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'Mask Translate','var=@1;td=@2;ts=td(1);if (length(td)>=2),off=td(2);else off=0;end;cyc=@3;ini=@4;[x,y]=srcsicon(7);')
set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'Mask Help','This block reads from a workspace variable at a given sample time. The column number is the block output vector length. When the simulation reached the end of the variable (eof) row, the block will cyclically output from the first row of the variable or output zeros based on the cyclic control entree.')
set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'Mask Entries','[0:M-1]''\/td\/1\/0\/')


%     Finished composite block ['Sampled read',13,'from wksp'].

set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'hide name',0,...
		'position',[45,63,120,107])


%     Subsystem  'MFSK mod'.

new_system([sys,'/','MFSK mod'])
set_param([sys,'/','MFSK mod'],'Location',[624,140,1004,330])


%     Subsystem  ['MFSK mod/FM',13,'passband'].

new_system([sys,'/',['MFSK mod/FM',13,'passband']])
set_param([sys,'/',['MFSK mod/FM',13,'passband']],'Location',[102,348,590,498])

add_block('built-in/Sum',[sys,'/',['MFSK mod/FM',13,'passband/Sum']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/Sum']],...
		'position',[130,42,150,78])

add_block('built-in/S-Function',[sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']],...
		'function name','schdint',...
		'parameters','td, ts, limit',...
		'Mask Display','Schdld\nreset-int',...
		'Mask Type','Scheduled reset integration.')
set_param([sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']],...
		'Mask Dialogue','Reset the state to be zero(s) at the scheduled reset point.|Scheduled reset time inteval and offset:|Sample time and offset:|Modulo bound:')
set_param([sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']],...
		'Mask Translate','td=@1;ts=@2;limit=@3;')
set_param([sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']],...
		'Mask Help','This block resets the state(s) to be zero(s) at the begining of reset time inteval. The reset inteval can be a two elements vector with the second element being offset.')
set_param([sys,'/',['MFSK mod/FM',13,'passband/Scheduled',13,'reset-int']],...
		'Mask Entries','td\/ts\/Inf\/',...
		'position',[200,39,260,81])

add_block('built-in/Constant',[sys,'/',['MFSK mod/FM',13,'passband/Constant']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/Constant']],...
		'Value','Fc',...
		'position',[40,85,60,105])

add_block('built-in/Fcn',[sys,'/',['MFSK mod/FM',13,'passband/sin']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/sin']],...
		'Expr','cos(u[1]*pi2+Ph)',...
		'position',[290,45,430,75])

add_block('built-in/Outport',[sys,'/',['MFSK mod/FM',13,'passband/out_1']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/out_1']],...
		'position',[465,50,485,70])

add_block('built-in/Inport',[sys,'/',['MFSK mod/FM',13,'passband/in_1']])
set_param([sys,'/',['MFSK mod/FM',13,'passband/in_1']],...
		'position',[60,40,80,60])
add_line([sys,'/',['MFSK mod/FM',13,'passband']],[85,50;125,50])
add_line([sys,'/',['MFSK mod/FM',13,'passband']],[65,95;90,95;90,70;125,70])
add_line([sys,'/',['MFSK mod/FM',13,'passband']],[155,60;195,60])
add_line([sys,'/',['MFSK mod/FM',13,'passband']],[265,60;285,60])
add_line([sys,'/',['MFSK mod/FM',13,'passband']],[435,60;460,60])
set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'Mask Display','plot(0,0,100,100,x,y);FM',...
		'Mask Type','Passband FM')
set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'Mask Dialogue','Modulate the input signal using FM method.|Carrier frequency (Hz):|Initial phase (rad):|Sample time (sec):|Symbol interval (sec; Use Inf for analog mod);')
set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'Mask Translate','Fc=@1;Ph=@2;pi2=2*pi;ts=@3;td=@4;if isinf(td),td=inf;end;[x,y]=moduicon(3);')
set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'Mask Help','This block modulates the input signal using frequency modulation method. The frequency of the output of the carrier signal depends on the amplitude of the input signal.')
set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'Mask Entries','Fc\/Ph\/ts\/td\/')


%     Finished composite block ['MFSK mod/FM',13,'passband'].

set_param([sys,'/',['MFSK mod/FM',13,'passband']],...
		'ForeGround',4,...
		'position',[190,48,270,92])


%     Subsystem  'MFSK mod/MFSK map'.

new_system([sys,'/','MFSK mod/MFSK map'])
set_param([sys,'/','MFSK mod/MFSK map'],'Location',[90,420,407,543])

add_block('built-in/Inport',[sys,'/','MFSK mod/MFSK map/in_1'])
set_param([sys,'/','MFSK mod/MFSK map/in_1'],...
		'position',[45,45,65,65])

add_block('built-in/Gain',[sys,'/','MFSK mod/MFSK map/Gain'])
set_param([sys,'/','MFSK mod/MFSK map/Gain'],...
		'Gain','Ton',...
		'position',[175,38,225,72])

add_block('built-in/Outport',[sys,'/','MFSK mod/MFSK map/out_1'])
set_param([sys,'/','MFSK mod/MFSK map/out_1'],...
		'position',[260,45,280,65])

add_block('built-in/Zero-Order Hold',[sys,'/',['MFSK mod/MFSK map/Zero-Order',13,'Hold1']])
set_param([sys,'/',['MFSK mod/MFSK map/Zero-Order',13,'Hold1']],...
		'Sample time','td',...
		'position',[105,39,140,71])