tstfskcd.m

数字通信第四版原书的例程

function [ret,x0,str,ts,xts]=tstfskcd(t,x,u,flag);
%TSTFSKCD	is the M-file description of the SIMULINK system named TSTFSKCD.
%	The block-diagram can be displayed by typing: TSTFSKCD.
%
%	SYS=TSTFSKCD(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 TSTFSKCD 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 TSTFSKCD with a FLAG of zero:
%	[SIZES]=TSTFSKCD([],[],[],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',[59,99,745,383])
     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;[num,den]=butter(4,100/pi*ts);td=.2;M=64;');

add_block('built-in/Mux',[sys,'/','Mux'])
set_param([sys,'/','Mux'],...
		'inputs','2',...
		'position',[560,68,595,117])


%     Subsystem  'Graph'.

new_system([sys,'/','Graph'])
set_param([sys,'/','Graph'],'Location',[0,59,274,252])

add_block('built-in/Inport',[sys,'/','Graph/x'])
set_param([sys,'/','Graph/x'],...
		'position',[65,55,85,75])

add_block('built-in/S-Function',[sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']])
set_param([sys,'/',['Graph/S-function',13,'M-file which plots',13,'lines',13,'']],...
		'function name','sfuny',...
		'parameters','ax, color,dt',...
		'position',[130,55,180,75])
add_line([sys,'/','Graph'],[90,65;125,65])
set_param([sys,'/','Graph'],...
		'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,'/','Graph'],...
		'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 ''/'':|Sample time:')
set_param([sys,'/','Graph'],...
		'Mask Translate','color = @4; ax = [0, @1, @2, @3]; dt = @5;')
set_param([sys,'/','Graph'],...
		'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,'/','Graph'],...
		'Mask Entries','20*td\/-1\/M\/''y-/g--/r-/m:/w-/r:/b+''\/td\/')


%     Finished composite block 'Graph'.

set_param([sys,'/','Graph'],...
		'position',[615,76,645,114])


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

new_system([sys,'/',['K-step',13,'delay']])
set_param([sys,'/',['K-step',13,'delay']],'Location',[4,432,349,702])

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/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/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/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/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/Clock',[sys,'/',['K-step',13,'delay/Clock']])
set_param([sys,'/',['K-step',13,'delay/Clock']],...
		'position',[75,145,95,165])

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/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_line([sys,'/',['K-step',13,'delay']],[300,130;320,130])
add_line([sys,'/',['K-step',13,'delay']],[45,90;55,90])
add_line([sys,'/',['K-step',13,'delay']],[190,90;195,90;195,120;265,120])
add_line([sys,'/',['K-step',13,'delay']],[145,240;240,240;240,140;265,140])
add_line([sys,'/',['K-step',13,'delay']],[100,155;115,155;115,175;145,175])
add_line([sys,'/',['K-step',13,'delay']],[105,205;115,205;115,185;145,185])
add_line([sys,'/',['K-step',13,'delay']],[185,180;220,180;220,130;265,130])
set_param([sys,'/',['K-step',13,'delay']],...
		'Mask Display','    -k\nz   ',...
		'Mask Type','Multi-step delay',...
		'Mask Dialogue','Output is K steps delay of the input signal.|Delay steps (integer):|Sample time (sec):|Inital condition:')
set_param([sys,'/',['K-step',13,'delay']],...
		'Mask Translate','n=@1;ts=@2;if length(ts)<2, ts=[ts 0];end;ini=@3;',...
		'Mask Help','This block equivalent to K unit delay.',...
		'Mask Entries','1\/td\/0\/')


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

set_param([sys,'/',['K-step',13,'delay']],...
		'BackGround',5,...
		'position',[285,13,340,57])


%     Subsystem  ['QASK',13,'decode'].

new_system([sys,'/',['QASK',13,'decode']])
set_param([sys,'/',['QASK',13,'decode']],'Location',[57,374,831,674])

add_block('built-in/Abs',[sys,'/',['QASK',13,'decode/Abs1']])
set_param([sys,'/',['QASK',13,'decode/Abs1']],...
		'position',[325,38,355,62])

add_block('built-in/Constant',[sys,'/',['QASK',13,'decode/Shift key2']])
set_param([sys,'/',['QASK',13,'decode/Shift key2']],...
		'BackGround',5,...
		'position',[325,114,350,136])

add_block('built-in/Constant',[sys,'/',['QASK',13,'decode/Shift key1']])
set_param([sys,'/',['QASK',13,'decode/Shift key1']],...
		'Value','sftx',...
		'position',[220,89,245,111])

add_block('built-in/S-Function',[sys,'/',['QASK',13,'decode/Minimum1']])
set_param([sys,'/',['QASK',13,'decode/Minimum1']],...
		'function name','arymimai',...
		'parameters','''min''',...
		'position',[385,40,445,60])

add_block('built-in/Constant',[sys,'/',['QASK',13,'decode/Shift key']])
set_param([sys,'/',['QASK',13,'decode/Shift key']],...
		'Value','sfty',...
		'position',[225,214,250,236])

add_block('built-in/S-Function',[sys,'/',['QASK',13,'decode/Minimum']])
set_param([sys,'/',['QASK',13,'decode/Minimum']],...
		'function name','arymimai',...
		'parameters','''min''',...
		'position',[385,165,450,185])

add_block('built-in/Abs',[sys,'/',['QASK',13,'decode/Abs']])
set_param([sys,'/',['QASK',13,'decode/Abs']],...
		'position',[340,163,370,187])

add_block('built-in/Sum',[sys,'/',['QASK',13,'decode/Sum2']])
set_param([sys,'/',['QASK',13,'decode/Sum2']],...
		'ForeGround',2,...
		'inputs','+-',...
		'position',[290,158,310,187])

add_block('built-in/Sum',[sys,'/',['QASK',13,'decode/Sum1']])
set_param([sys,'/',['QASK',13,'decode/Sum1']],...
		'ForeGround',2,...
		'inputs','+-',...
		'position',[280,33,300,62])

add_block('built-in/Sum',[sys,'/',['QASK',13,'decode/Sum4']])
set_param([sys,'/',['QASK',13,'decode/Sum4']],...
		'ForeGround',2,...
		'position',[470,58,490,87])

add_block('built-in/Outport',[sys,'/',['QASK',13,'decode/out_1']])
set_param([sys,'/',['QASK',13,'decode/out_1']],...
		'position',[685,80,705,100])

add_block('built-in/Saturation',[sys,'/',['QASK',13,'decode/Saturation']])
set_param([sys,'/',['QASK',13,'decode/Saturation']],...
		'Lower Limit','0',...
		'Upper Limit','N-1',...
		'position',[630,78,660,102])

add_block('built-in/Sum',[sys,'/',['QASK',13,'decode/Sum3']])
set_param([sys,'/',['QASK',13,'decode/Sum3']],...
		'ForeGround',2,...
		'inputs','+-',...
		'position',[580,73,600,102])


%     Subsystem  ['QASK',13,'decode/2-D Table'].

new_system([sys,'/',['QASK',13,'decode/2-D Table']])
set_param([sys,'/',['QASK',13,'decode/2-D Table']],'Location',[436,148,718,302])

add_block('built-in/Mux',[sys,'/',['QASK',13,'decode/2-D Table/Mux']])
set_param([sys,'/',['QASK',13,'decode/2-D Table/Mux']],...
		'inputs','2',...
		'position',[90,46,120,79])

add_block('built-in/S-Function',[sys,'/',['QASK',13,'decode/2-D Table/S-function']])
set_param([sys,'/',['QASK',13,'decode/2-D Table/S-function']],...
		'function name','sftable2',...
		'parameters','xindex, yindex, table',...
		'position',[140,52,190,78])

add_block('built-in/Inport',[sys,'/',['QASK',13,'decode/2-D Table/x0']])
set_param([sys,'/',['QASK',13,'decode/2-D Table/x0']],...
		'position',[20,25,40,45])

add_block('built-in/Outport',[sys,'/',['QASK',13,'decode/2-D Table/table out']])
set_param([sys,'/',['QASK',13,'decode/2-D Table/table out']],...
		'position',[215,55,235,75])

add_block('built-in/Inport',[sys,'/',['QASK',13,'decode/2-D Table/y0']])
set_param([sys,'/',['QASK',13,'decode/2-D Table/y0']],...
		'Port','2',...
		'position',[20,80,40,100])
add_line([sys,'/',['QASK',13,'decode/2-D Table']],[125,65;135,65])
add_line([sys,'/',['QASK',13,'decode/2-D Table']],[45,35;65,35;65,55;85,55])