bpsnyqmf.m

现代通信系统（prokis）的所有matlab源程序,对初学者很有帮助的。

function [ret,x0,str,ts,xts]=bpsnyqmf(t,x,u,flag);
%BPSNYQMF	is the M-file description of the SIMULINK system named BPSNYQMF.
%	The block-diagram can be displayed by typing: BPSNYQMF.
%
%	SYS=BPSNYQMF(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 BPSNYQMF 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 BPSNYQMF with a FLAG of zero:
%	[SIZES]=BPSNYQMF([],[],[],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',[190,42,1255,319])
     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', '.000001')
set_param(sys,'Max step size', '10')
set_param(sys,'Relative error','1e-6')
set_param(sys,'Return vars',   '')

add_block('built-in/Scope',[sys,'/','d_e(t)'])
set_param([sys,'/','d_e(t)'],...
		'orientation',1,...
		'Vgain','2.000000',...
		'Hgain','25.000000',...
		'Vmax','4.000000',...
		'Hmax','50.000000',...
		'Window',[341,824,1277,924])
open_system([sys,'/','d_e(t)'])
set_param([sys,'/','d_e(t)'],...
		'position',[835,180,865,210])

add_block('built-in/Scope',[sys,'/','u(t)'])
set_param([sys,'/','u(t)'],...
		'Vgain','2.000000',...
		'Hgain','25.000000',...
		'Vmax','4.000000',...
		'Hmax','50.000000',...
		'Window',[344,338,1279,438])
open_system([sys,'/','u(t)'])
set_param([sys,'/','u(t)'],...
		'position',[80,205,110,235])


%     Subsystem  'Error rate'.

new_system([sys,'/','Error rate'])
set_param([sys,'/','Error rate'],'Location',[255,368,509,510])

add_block('built-in/Inport',[sys,'/','Error rate/in_2'])
set_param([sys,'/','Error rate/in_2'],...
		'Port','2',...
		'position',[15,60,35,80])

add_block('built-in/Inport',[sys,'/','Error rate/in_1'])
set_param([sys,'/','Error rate/in_1'],...
		'position',[15,45,35,65])

add_block('built-in/Mux',[sys,'/','Error rate/Mux'])
set_param([sys,'/','Error rate/Mux'],...
		'inputs','2',...
		'position',[65,46,100,79])

add_block('built-in/S-Function',[sys,'/','Error rate/S-function'])
set_param([sys,'/','Error rate/S-function'],...
		'function name','sbiterr',...
		'parameters','num_lin, K, TDelay, Sample',...
		'position',[130,52,195,78])
add_line([sys,'/','Error rate'],[40,70;60,70])
add_line([sys,'/','Error rate'],[40,55;60,55])
add_line([sys,'/','Error rate'],[105,65;125,65])
set_param([sys,'/','Error rate'],...
		'Mask Display','Error\nmeter',...
		'Mask Type','Symbol/bit error counter')
set_param([sys,'/','Error rate'],...
		'Mask Dialogue','Use the input data from the 1st port as the reference signal to detect the number of errors and error rate of the 2nd signal.|Bit per symbol:|Number of digits on display:|Delay between 1st port and 2nd port:|Sample time (sec):')
set_param([sys,'/','Error rate'],...
		'Mask Translate','K=@1;num_lin=@2;TDelay=@3;Sample=@4;')
set_param([sys,'/','Error rate'],...
		'Mask Help','The signal from the first port must be a scalar. The second input port can be a vector with a delay to the first port signal. The comparison happens only at the sampling point.')
set_param([sys,'/','Error rate'],...
		'Mask Entries','1\/10\/12\/1\/')


%     Finished composite block 'Error rate'.

set_param([sys,'/','Error rate'],...
		'orientation',1,...
		'position',[890,230,970,270])

add_block('built-in/Gain',[sys,'/','Gain'])
set_param([sys,'/','Gain'],...
		'Gain','1/20',...
		'position',[805,107,830,133])


%     Subsystem  'Nyquist-Filter'.

new_system([sys,'/','Nyquist-Filter'])
set_param([sys,'/','Nyquist-Filter'],'Location',[131,545,589,761])


%     Subsystem  ['Nyquist-Filter/Pulses deivide',13,'same sample time1'].

new_system([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']])
set_param([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],'Location',[55,192,283,286])

add_block('built-in/S-Function',[sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1/S-function1']])
set_param([sys,'/',['Nyquist-Filter/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,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1/Outport']])
set_param([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1/Outport']],...
		'position',[160,35,180,55])
add_line([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],[110,45;155,45])
set_param([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],...
		'Mask Display','Vector\nPulse',...
		'Mask Type','Pulse generator')
set_param([sys,'/',['Nyquist-Filter/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,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],...
		'Mask Translate','samp_time=@1;out_divid=@2;offset=@3;')
set_param([sys,'/',['Nyquist-Filter/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,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],...
		'Mask Entries','td\/1\/off\/')


%     Finished composite block ['Nyquist-Filter/Pulses deivide',13,'same sample time1'].

set_param([sys,'/',['Nyquist-Filter/Pulses deivide',13,'same sample time1']],...
		'position',[35,71,95,109])

add_block('built-in/Inport',[sys,'/','Nyquist-Filter/in_1'])
set_param([sys,'/','Nyquist-Filter/in_1'],...
		'position',[35,30,55,50])

add_block('built-in/Outport',[sys,'/','Nyquist-Filter/out_1'])
set_param([sys,'/','Nyquist-Filter/out_1'],...
		'position',[330,40,350,60])

add_block('built-in/Filter',[sys,'/','Nyquist-Filter/Filter'])
set_param([sys,'/','Nyquist-Filter/Filter'],...
		'Numerator','num',...
		'Denominator','den',...
		'Sample time','ts',...
		'position',[255,31,310,69])


%     Subsystem  'Nyquist-Filter/Memory Impulse'.

new_system([sys,'/','Nyquist-Filter/Memory Impulse'])
set_param([sys,'/','Nyquist-Filter/Memory Impulse'],'Location',[541,520,939,745])

add_block('built-in/Inport',[sys,'/','Nyquist-Filter/Memory Impulse/in_2'])
set_param([sys,'/','Nyquist-Filter/Memory Impulse/in_2'],...
		'Port','2',...
		'position',[25,30,45,50])


%     Subsystem  ['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector'].

new_system([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']])
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],'Location',[419,521,808,713])

add_block('built-in/Unit Delay',[sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector/Unit Delay']])
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector/Unit Delay']],...
		'Sample time','ts',...
		'position',[120,87,170,103])

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

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

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

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

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

add_block('built-in/Relational Operator',[sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector/Relational',13,'Operator']])
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector/Relational',13,'Operator']],...
		'position',[135,18,165,42])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[35,25;130,25])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[45,25;45,95;115,95])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[175,95;195,95])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[65,145;100,145;100,35;130,35])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[100,145;180,145;180,105;195,105])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[170,30;260,30])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[235,100;240,100;240,40;260,40])
add_line([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],[300,35;335,35])
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],...
		'Mask Display','Edge\nDetector',...
		'Mask Type','Edge Detection',...
		'Mask Dialogue','Rising edge detection:|Threshold:|Sampling time:')
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],...
		'Mask Translate','thld=@1;ts=@2;')
set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'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,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],...
		'Mask Entries','thr\/ts\/')


%     Finished composite block ['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector'].

set_param([sys,'/',['Nyquist-Filter/Memory Impulse/discrete',13,'Rising edge',13,'detector']],...
		'position',[65,26,120,54])

add_block('built-in/Switch',[sys,'/','Nyquist-Filter/Memory Impulse/Switch'])
set_param([sys,'/','Nyquist-Filter/Memory Impulse/Switch'],...
		'Threshold','.5',...
		'position',[295,124,320,156])

add_block('built-in/Constant',[sys,'/','Nyquist-Filter/Memory Impulse/Constant'])
set_param([sys,'/','Nyquist-Filter/Memory Impulse/Constant'],...