tstps3cd.m

数字通信第四版原书的例程

add_block('built-in/Product',[sys,'/',['QADM',13,'passband2/Product1']])
set_param([sys,'/',['QADM',13,'passband2/Product1']],...
		'position',[330,167,355,198])

add_block('built-in/Product',[sys,'/',['QADM',13,'passband2/Product']])
set_param([sys,'/',['QADM',13,'passband2/Product']],...
		'position',[330,62,355,93])

add_block('built-in/Fcn',[sys,'/',['QADM',13,'passband2/Fcn1']])
set_param([sys,'/',['QADM',13,'passband2/Fcn1']],...
		'Expr','sin(u[1]+Ph)',...
		'position',[200,175,300,205])

add_block('built-in/Fcn',[sys,'/',['QADM',13,'passband2/Fcn']])
set_param([sys,'/',['QADM',13,'passband2/Fcn']],...
		'Expr','cos(u[1]+Ph)',...
		'position',[205,55,300,85])

add_block('built-in/Note',[sys,'/',['QADM',13,'passband2/Ref: Hambley: An Intro to Comm. Systems. pp72']])
set_param([sys,'/',['QADM',13,'passband2/Ref: Hambley: An Intro to Comm. Systems. pp72']],...
		'position',[285,280,290,285])

add_block('built-in/Inport',[sys,'/',['QADM',13,'passband2/in_1']])
set_param([sys,'/',['QADM',13,'passband2/in_1']],...
		'position',[230,120,250,140])

add_block('built-in/Gain',[sys,'/',['QADM',13,'passband2/Gain1']])
set_param([sys,'/',['QADM',13,'passband2/Gain1']],...
		'Gain','2',...
		'position',[270,118,295,142])

add_block('built-in/Filter',[sys,'/',['QADM',13,'passband2/Filter']])
set_param([sys,'/',['QADM',13,'passband2/Filter']],...
		'Numerator','num',...
		'Denominator','den',...
		'Sample time','ts',...
		'position',[390,61,445,99])

add_block('built-in/Filter',[sys,'/',['QADM',13,'passband2/Filter1']])
set_param([sys,'/',['QADM',13,'passband2/Filter1']],...
		'Numerator','num',...
		'Denominator','den',...
		'Sample time','ts',...
		'position',[390,166,445,204])

add_block('built-in/Gain',[sys,'/',['QADM',13,'passband2/Gain']])
set_param([sys,'/',['QADM',13,'passband2/Gain']],...
		'Gain','Fc',...
		'position',[110,101,160,139])

add_block('built-in/Clock',[sys,'/',['QADM',13,'passband2/Clock']])
set_param([sys,'/',['QADM',13,'passband2/Clock']],...
		'position',[60,110,80,130])
add_line([sys,'/',['QADM',13,'passband2']],[85,120;105,120])
add_line([sys,'/',['QADM',13,'passband2']],[450,185;475,185])
add_line([sys,'/',['QADM',13,'passband2']],[360,185;385,185])
add_line([sys,'/',['QADM',13,'passband2']],[450,80;475,80])
add_line([sys,'/',['QADM',13,'passband2']],[360,80;385,80])
add_line([sys,'/',['QADM',13,'passband2']],[305,190;325,190])
add_line([sys,'/',['QADM',13,'passband2']],[305,70;325,70])
add_line([sys,'/',['QADM',13,'passband2']],[165,120;185,120;185,70;200,70])
add_line([sys,'/',['QADM',13,'passband2']],[185,120;195,190])
add_line([sys,'/',['QADM',13,'passband2']],[255,130;265,130])
add_line([sys,'/',['QADM',13,'passband2']],[300,130;305,130;305,85;325,85])
add_line([sys,'/',['QADM',13,'passband2']],[300,130;305,130;305,175;325,175])
set_param([sys,'/',['QADM',13,'passband2']],...
		'Mask Display','plot(0,0,100,100,x,y);QADM',...
		'Mask Type','Passband DSB-SC QADM')
set_param([sys,'/',['QADM',13,'passband2']],...
		'Mask Dialogue','Demodulate a DSB-SC QAM modulated\nsignal into in-phase and quadrature\ncomponents.|Carrier frequency (Hz):|Lowpass filter numerator:|Lowpass filter denominator:|Initial phase (rad):|Sample time (sec):')
set_param([sys,'/',['QADM',13,'passband2']],...
		'Mask Translate','Fc=@1*2*pi;num=@2;den=@3;Ph=@4;ts=@5;[x,y]=moduicon(2);')
set_param([sys,'/',['QADM',13,'passband2']],...
		'Mask Help','This block demodulates the QM-DSB-SC-AM modulated signal. The first output port outputs the in-phase component and the second port outputs the quadrature component. The demodulation uses a discrete-time lowpass filter that passes the signal message and eliminates the carrier signal. ')
set_param([sys,'/',['QADM',13,'passband2']],...
		'Mask Entries','100/2/pi\/num\/den\/0\/ts\/')


%     Finished composite block ['QADM',13,'passband2'].

set_param([sys,'/',['QADM',13,'passband2']],...
		'hide name',0,...
		'position',[375,53,455,97])


%     Subsystem  ['QASK',13,'arbitrary-demap'].

new_system([sys,'/',['QASK',13,'arbitrary-demap']])
set_param([sys,'/',['QASK',13,'arbitrary-demap']],'Location',[45,449,594,684])

add_block('built-in/Zero-Order Hold',[sys,'/',['QASK',13,'arbitrary-demap/Zero-Order',13,'Hold']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Zero-Order',13,'Hold']],...
		'ForeGround',2,...
		'Sample time','td',...
		'position',[120,29,155,61])

add_block('built-in/Inport',[sys,'/',['QASK',13,'arbitrary-demap/real']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/real']],...
		'position',[45,35,65,55])

add_block('built-in/Inport',[sys,'/',['QASK',13,'arbitrary-demap/imag']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/imag']],...
		'Port','2',...
		'position',[45,120,65,140])

add_block('built-in/Zero-Order Hold',[sys,'/',['QASK',13,'arbitrary-demap/Zero-Order',13,'Hold1']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Zero-Order',13,'Hold1']],...
		'ForeGround',4,...
		'Sample time','td',...
		'position',[120,114,155,146])

add_block('built-in/Sum',[sys,'/',['QASK',13,'arbitrary-demap/Sum1']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Sum1']],...
		'ForeGround',2,...
		'inputs','+-',...
		'position',[230,38,250,67])

add_block('built-in/Sum',[sys,'/',['QASK',13,'arbitrary-demap/Sum6']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Sum6']],...
		'ForeGround',4,...
		'inputs','+-',...
		'position',[230,123,250,152])

add_block('built-in/Product',[sys,'/',['QASK',13,'arbitrary-demap/Product']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Product']],...
		'position',[300,45,325,65])

add_block('built-in/Product',[sys,'/',['QASK',13,'arbitrary-demap/Product1']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Product1']],...
		'position',[300,130,325,150])

add_block('built-in/Sum',[sys,'/',['QASK',13,'arbitrary-demap/Sum2']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Sum2']],...
		'position',[370,78,390,107])

add_block('built-in/S-Function',[sys,'/',['QASK',13,'arbitrary-demap/Minimum1']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/Minimum1']],...
		'function name','arymimai',...
		'parameters','''min''',...
		'position',[415,85,475,105])

add_block('built-in/Outport',[sys,'/',['QASK',13,'arbitrary-demap/out_1']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/out_1']],...
		'position',[495,85,515,105])

add_block('built-in/Constant',[sys,'/',['QASK',13,'arbitrary-demap/real_pt']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/real_pt']],...
		'BackGround',3,...
		'Value','y1',...
		'position',[170,84,195,106])

add_block('built-in/Constant',[sys,'/',['QASK',13,'arbitrary-demap/imag_pt']])
set_param([sys,'/',['QASK',13,'arbitrary-demap/imag_pt']],...
		'BackGround',5,...
		'Value','y2',...
		'position',[165,169,190,191])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[70,45;115,45])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[70,130;115,130])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[200,95;205,95;205,60;225,60])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[160,45;225,45])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[160,130;225,130])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[195,180;205,180;205,145;225,145])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[255,55;270,55;270,50;295,50])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[270,55;270,60;295,60])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[255,140;270,140;270,135;295,135])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[270,140;270,145;295,145])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[330,55;340,55;340,85;365,85])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[330,140;340,140;340,100;365,100])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[395,95;410,95])
add_line([sys,'/',['QASK',13,'arbitrary-demap']],[480,95;490,95])
set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'Mask Display','QASK\nA-demap',...
		'Mask Type','QASK A-demap')
set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'Mask Dialogue','Reverse the QASK map. Input in-phase\nand quadrature components from the\ntwo inputs. Output demapped signal.|Constellation for in-phase component:|Constellation for quadrature component:|Symbol interval and offset (sec):')
set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'Mask Translate','y1=@1;y2=@2;td=@3;')
set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'Mask Help','This block demaps a QASK mapped signal using user defined arbitrary constellation. You can place this block after a QAM demodulation block. The in-phase and quadrature constellation vectors must have the same length, which equals to M, the M-ary number of the QASK. The output symbols are integers in the range [0, M-1]. The symbol interval can be a two elements vector with the first element being offset. The default offset is zero.')
set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'Mask Entries','[real(exp(j*[1:floor(M/3)]/floor(M/3)*pi*2)) 2*real(exp(j*[1:M-floor(M/3)]/(M-floor(M/3))*pi*2))]\/[imag(exp(j*[1:floor(M/3)]/floor(M/3)*pi*2)) 2*imag(exp(j*[1:M-floor(M/3)]/(M-floor(M/3))*pi*2))]\/[td, td-ts]\/')


%     Finished composite block ['QASK',13,'arbitrary-demap'].

set_param([sys,'/',['QASK',13,'arbitrary-demap']],...
		'hide name',0,...
		'position',[520,53,600,97])
add_line(sys,[475,170;630,170])
add_line(sys,[570,135;595,135;595,150;630,150])
add_line(sys,[105,75;145,75])
add_line(sys,[120,75;120,25;625,25;635,55])
add_line(sys,[350,75;370,75])
add_line(sys,[235,65;260,65])
add_line(sys,[235,85;260,85])
add_line(sys,[460,65;515,65])
add_line(sys,[460,85;515,85])
add_line(sys,[605,75;635,75])
add_line(sys,[500,85;500,120;525,120])
add_line(sys,[475,65;475,145;525,145])

drawnow

% Return any arguments.
if (nargin | nargout)
	% Must use feval here to access system in memory
	if (nargin > 3)
		if (flag == 0)
			eval(['[ret,x0,str,ts,xts]=',sys,'(t,x,u,flag);'])
		else
			eval(['ret =', sys,'(t,x,u,flag);'])
		end
	else
		[ret,x0,str,ts,xts] = feval(sys);
	end
else
	drawnow % Flash up the model and execute load callback
end