//AWGN_f Scicos Additive White Gaussian Noise block //Classical interface function ver1.0 - scilab-3.0 //19 janvier 2005 Author : - IRCOM GROUP - A.Layec function [x,y,typ]=AWGN_f(job,arg1,arg2) x=[];y=[];typ=[] select job case 'plot' then standard_draw(arg1) case 'getinputs' then [x,y,typ]=standard_inputs(arg1) case 'getoutputs' then [x,y,typ]=standard_outputs(arg1) case 'getorigin' then [x,y]=standard_origin(arg1) case 'set' then x=arg1; graphics=arg1.graphics;model=arg1.model; exprs=graphics.exprs; while %t do text=['Set Additive White Gaussian Noise Channel Block'] [ok,nu,sig,moy,herit,exprs]=getvalue(text,... ['Size of inputs';'Sigma';'Mean';'Inherit (no:0, yes:1)'],... list('vec',1,'vec',1,'vec',1,'vec',1),exprs) if ~ok then break,end; if ok then if herit==1 then [model,graphics,ok]=check_io(model,graphics,[nu;nu],[nu;nu],[],[]) model.evtin=[] else [model,graphics,ok]=check_io(model,graphics,[nu;nu],[nu;nu],1,[]) model.evtin=1 end model.in=[nu;nu] model.out=[nu;nu] graphics.exprs=exprs model.rpar=[sig;moy] x.graphics=graphics;x.model=model break; end end case 'define' then nu=64; sig=0; moy=0 herit=1; model=scicos_model() model.sim=list('awgn',4) model.in=[nu;nu] model.out=[nu;nu] model.dstate=[0;0] model.evtin=[] model.evtout=[] model.rpar=[sig;moy] model.ipar=[] model.blocktype='d' model.firing=[] model.dep_ut=[%f %f %f] gr_i=['txt=[''A.W.G.N.''];'; 'xstringb(orig(1),orig(2),txt,sz(1),sz(2),''fill'');' ] exprs=[string(nu),string(sig),string(moy),string(herit)] x=standard_define([2 2],model,exprs,gr_i) end endfunction