tddmmpsk.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=tddmmpsk(t,x,u,flag);
%TDDMMPSK	is the M-file description of the SIMULINK system named TDDMMPSK.
%	The block-diagram can be displayed by typing: TDDMMPSK.
%
%	SYS=TDDMMPSK(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 TDDMMPSK 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 TDDMMPSK with a FLAG of zero:
%	[SIZES]=TDDMMPSK([],[],[],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',[56,302,672,459])
     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])


%     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/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_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_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_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])

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_line([sys,'/',['Sampled read',13,'from wksp']],[260,75;290,75])
add_line([sys,'/',['Sampled read',13,'from wksp']],[115,75;175,75])
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','randint(300,1,M)\/td\/1\/0\/')


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

set_param([sys,'/',['Sampled read',13,'from wksp']],...
		'hide name',0,...
		'position',[40,63,115,107])


%     Subsystem  'MPSK mod'.

new_system([sys,'/','MPSK mod'])
set_param([sys,'/','MPSK mod'],'Location',[623,420,941,555])


%     Subsystem  'MPSK mod/MPSK map'.

new_system([sys,'/','MPSK mod/MPSK map'])
set_param([sys,'/','MPSK mod/MPSK map'],'Location',[71,474,419,648])

add_block('built-in/Constant',[sys,'/','MPSK mod/MPSK map/Multiple factor'])
set_param([sys,'/','MPSK mod/MPSK map/Multiple factor'],...
		'Value','Sft',...
		'position',[130,108,150,132])

add_block('built-in/Outport',[sys,'/','MPSK mod/MPSK map/out_1'])
set_param([sys,'/','MPSK mod/MPSK map/out_1'],...
		'position',[310,85,330,105])

add_block('built-in/Product',[sys,'/','MPSK mod/MPSK map/Product'])
set_param([sys,'/','MPSK mod/MPSK map/Product'],...
		'position',[235,76,260,109])

add_block('built-in/Zero-Order Hold',[sys,'/',['MPSK mod/MPSK map/Zero-Order',13,'Hold1']])
set_param([sys,'/',['MPSK mod/MPSK map/Zero-Order',13,'Hold1']],...
		'Sample time','td',...
		'position',[130,29,165,61])

add_block('built-in/Inport',[sys,'/','MPSK mod/MPSK map/in_1'])
set_param([sys,'/','MPSK mod/MPSK map/in_1'],...
		'position',[60,35,80,55])
add_line([sys,'/','MPSK mod/MPSK map'],[155,120;200,120;200,100;230,100])
add_line([sys,'/','MPSK mod/MPSK map'],[265,95;305,95])
add_line([sys,'/','MPSK mod/MPSK map'],[85,45;125,45])
add_line([sys,'/','MPSK mod/MPSK map'],[170,45;200,45;200,85;230,85])
set_param([sys,'/','MPSK mod/MPSK map'],...
		'Mask Display','MPSK\nmap',...
		'Mask Type','MPSK map')
set_param([sys,'/','MPSK mod/MPSK map'],...
		'Mask Dialogue','Map input digital signal to analog phase shift.|M-ary number (input integer in range [0, M-1]):|Input symbol interval and offset (sec):')
set_param([sys,'/','MPSK mod/MPSK map'],...
		'Mask Translate','pi2=2*pi;Sft=pi2/@1;td=@2;')
set_param([sys,'/','MPSK mod/MPSK map'],...
		'Mask Help','This block maps the input digital signal to the analog signal, which is ready for the PM modulation. The input are integers in the range [0, M-1], where M is the M-ary number. You can view the MPSK constellation using the MODMAP function.')
set_param([sys,'/','MPSK mod/MPSK map'],...
		'Mask Entries','M\/td\/')


%     Finished composite block 'MPSK mod/MPSK map'.

set_param([sys,'/','MPSK mod/MPSK map'],...
		'hide name',0,...
		'position',[60,53,140,97])


%     Subsystem  ['MPSK mod/PM',13,'passband'].

new_system([sys,'/',['MPSK mod/PM',13,'passband']])
set_param([sys,'/',['MPSK mod/PM',13,'passband']],'Location',[358,506,869,673])

add_block('built-in/Clock',[sys,'/',['MPSK mod/PM',13,'passband/Clock']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/Clock']],...
		'position',[40,65,60,85])

add_block('built-in/Sum',[sys,'/',['MPSK mod/PM',13,'passband/Sum2']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/Sum2']],...
		'inputs','+-',...
		'position',[220,55,245,90])

add_block('built-in/Outport',[sys,'/',['MPSK mod/PM',13,'passband/out_1']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/out_1']],...
		'position',[445,65,465,85])

add_block('built-in/Inport',[sys,'/',['MPSK mod/PM',13,'passband/in_1']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/in_1']],...
		'position',[150,10,170,30])

add_block('built-in/Fcn',[sys,'/',['MPSK mod/PM',13,'passband/Fcn']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/Fcn']],...
		'Expr','cos(u[1])',...
		'position',[325,60,400,90])

add_block('built-in/Sum',[sys,'/',['MPSK mod/PM',13,'passband/Sum1']])
set_param([sys,'/',['MPSK mod/PM',13,'passband/Sum1']],...