tstrsinv.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=tstrsinv(t,x,u,flag);
%TSTRSINV	is the M-file description of the SIMULINK system named TSTRSINV.
%	The block-diagram can be displayed by typing: TSTRSINV.
%
%	SYS=TSTRSINV(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 TSTRSINV 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 TSTRSINV with a FLAG of zero:
%	[SIZES]=TSTRSINV([],[],[],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',[90,172,841,457])
     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', '1')
set_param(sys,'Relative error','1e-3')
set_param(sys,'Return vars',   '')
set_param(sys,'Load callback','N_rs_demo=15;K_rs_demo=9;M_rs_demo=4;GWN=.05;');


%     Subsystem  ['K-step',13,'delay'].

new_system([sys,'/',['K-step',13,'delay']])
set_param([sys,'/',['K-step',13,'delay']],'Location',[12,432,357,702])

add_block('built-in/Relational Operator',[sys,'/',['K-step',13,'delay/Relational',13,'Operator']])
set_param([sys,'/',['K-step',13,'delay/Relational',13,'Operator']],...
		'position',[150,168,180,192])

add_block('built-in/Constant',[sys,'/',['K-step',13,'delay/Constant1']])
set_param([sys,'/',['K-step',13,'delay/Constant1']],...
		'Value','n*ts(1)+ts(2)',...
		'position',[15,194,100,216])

add_block('built-in/Constant',[sys,'/',['K-step',13,'delay/Constant']])
set_param([sys,'/',['K-step',13,'delay/Constant']],...
		'Value','ini',...
		'position',[120,230,140,250])

add_block('built-in/Switch',[sys,'/',['K-step',13,'delay/Switch']])
set_param([sys,'/',['K-step',13,'delay/Switch']],...
		'Threshold','.1',...
		'position',[270,114,295,146])

add_block('built-in/Filter',[sys,'/',['K-step',13,'delay/K-step',13,'delay']])
set_param([sys,'/',['K-step',13,'delay/K-step',13,'delay']],...
		'Numerator','[zeros(1,n), 1]',...
		'Denominator','1',...
		'Sample time','ts',...
		'position',[60,70,185,110])

add_block('built-in/Outport',[sys,'/',['K-step',13,'delay/out_1']])
set_param([sys,'/',['K-step',13,'delay/out_1']],...
		'position',[325,120,345,140])

add_block('built-in/Inport',[sys,'/',['K-step',13,'delay/in_1']])
set_param([sys,'/',['K-step',13,'delay/in_1']],...
		'position',[20,80,40,100])

add_block('built-in/Digital Clock',[sys,'/',['K-step',13,'delay/Digital Clock']])
set_param([sys,'/',['K-step',13,'delay/Digital Clock']],...
		'Sample time','ts',...
		'position',[60,140,95,170])
add_line([sys,'/',['K-step',13,'delay']],[185,180;220,180;220,130;265,130])
add_line([sys,'/',['K-step',13,'delay']],[105,205;115,205;115,185;145,185])
add_line([sys,'/',['K-step',13,'delay']],[100,155;115,155;115,175;145,175])
add_line([sys,'/',['K-step',13,'delay']],[145,240;240,240;240,140;265,140])
add_line([sys,'/',['K-step',13,'delay']],[190,90;195,90;195,120;265,120])
add_line([sys,'/',['K-step',13,'delay']],[45,90;55,90])
add_line([sys,'/',['K-step',13,'delay']],[300,130;320,130])
set_param([sys,'/',['K-step',13,'delay']],...
		'Mask Display','    -k\nz   ',...
		'Mask Type','Multi-step delay',...
		'Mask Dialogue','Output is K-step delay of the input signal.|Delay steps (integer):|Sample time (sec):|Initial output:')
set_param([sys,'/',['K-step',13,'delay']],...
		'Mask Translate','n=@1;ts=@2;if length(ts)<2, ts=[ts 0];end;ini=@3;')
set_param([sys,'/',['K-step',13,'delay']],...
		'Mask Help','This block holds the input signal for K steps and then outputs the signal. The delay step cannot be changed during the simulation.',...
		'Mask Entries','N_rs_demo\/1/N_rs_demo\/0\/')


%     Finished composite block ['K-step',13,'delay'].

set_param([sys,'/',['K-step',13,'delay']],...
		'ForeGround',3,...
		'hide name',0,...
		'position',[490,153,570,197])

add_block('built-in/Mux',[sys,'/','Mux'])
set_param([sys,'/','Mux'],...
		'hide name',0,...
		'inputs','2',...
		'position',[600,131,630,164])


%     Subsystem  ['Placed and',13,'detected errors'].

new_system([sys,'/',['Placed and',13,'detected errors']])
set_param([sys,'/',['Placed and',13,'detected errors']],'Location',[0,59,274,252])

add_block('built-in/S-Function',[sys,'/',['Placed and',13,'detected errors/S-function',13,'M-file which plots',13,'lines',13,'']])
set_param([sys,'/',['Placed and',13,'detected errors/S-function',13,'M-file which plots',13,'lines',13,'']],...
		'function name','sfuny',...
		'parameters','ax, color,dt',...
		'position',[130,55,180,75])

add_block('built-in/Inport',[sys,'/',['Placed and',13,'detected errors/x']])
set_param([sys,'/',['Placed and',13,'detected errors/x']],...
		'position',[65,55,85,75])
add_line([sys,'/',['Placed and',13,'detected errors']],[90,65;125,65])
set_param([sys,'/',['Placed and',13,'detected errors']],...
		'Mask Display','plot(0,0,100,100,[90,10,10,10,90,90,10],[65,65,90,40,40,90,90],[90,78,69,54,40,31,25,10],[77,60,48,46,56,75,81,84])',...
		'Mask Type','Graph scope.')
set_param([sys,'/',['Placed and',13,'detected errors']],...
		'Mask Dialogue','Graph scope using MATLAB graph window.\nEnter plotting ranges and line type.|Time range:|y-min:|y-max:|Line type (rgbw-:*). Seperate each plot by ''/'':')
set_param([sys,'/',['Placed and',13,'detected errors']],...
		'Mask Translate','color = @4; ax = [0, @1, @2, @3]; dt = -1;')
set_param([sys,'/',['Placed and',13,'detected errors']],...
		'Mask Help','This block plots to the MATLAB graph window and can be used as an improved version of the Scope block. Look at the m-file sfuny.m to see how it works. This block can take scalar or vector input signal.')
set_param([sys,'/',['Placed and',13,'detected errors']],...
		'Mask Entries','5\/-1.1\/5\/''r-/g--/c-./w:/m*/ro/b+''\/')


%     Finished composite block ['Placed and',13,'detected errors'].

set_param([sys,'/',['Placed and',13,'detected errors']],...
		'position',[655,131,685,169])


%     Subsystem  'Counter'.

new_system([sys,'/','Counter'])
set_param([sys,'/','Counter'],'Location',[128,50,722,374])

add_block('built-in/Constant',[sys,'/','Counter/Constant'])
set_param([sys,'/','Counter/Constant'],...
		'ForeGround',3,...
		'Value','thld',...
		'position',[105,100,135,120])

add_block('built-in/Relational Operator',[sys,'/',['Counter/Relational',13,'Operator1']])
set_param([sys,'/',['Counter/Relational',13,'Operator1']],...
		'ForeGround',2,...
		'Operator','>',...
		'position',[225,53,255,77])

add_block('built-in/Sum',[sys,'/','Counter/Sum'])
set_param([sys,'/','Counter/Sum'],...
		'ForeGround',3,...
		'position',[295,100,315,120])

add_block('built-in/Switch',[sys,'/','Counter/Switch2'])
set_param([sys,'/','Counter/Switch2'],...
		'ForeGround',3,...
		'Threshold','eps',...
		'position',[345,149,370,181])

add_block('built-in/Inport',[sys,'/','Counter/in_1'])
set_param([sys,'/','Counter/in_1'],...
		'position',[15,50,35,70])

add_block('built-in/Inport',[sys,'/','Counter/in_2'])
set_param([sys,'/','Counter/in_2'],...
		'Port','2',...
		'position',[15,155,35,175])


%     Subsystem  ['Counter/Rising edge',13,'detector'].

new_system([sys,'/',['Counter/Rising edge',13,'detector']])
set_param([sys,'/',['Counter/Rising edge',13,'detector']],'Location',[303,485,692,659])

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

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

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

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

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

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

add_block('built-in/Relational Operator',[sys,'/',['Counter/Rising edge',13,'detector/Relational',13,'Operator']])
set_param([sys,'/',['Counter/Rising edge',13,'detector/Relational',13,'Operator']],...