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GRAFICAS DEMODULACIN
AMMATLAB
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MODULACIN EN AMfc=100[hz]fm=20[hz]PARA 50%Ec=10Em=5
PARA 100%Ec=10Em=10
mas 100%Ec=5
Em=10
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PROGRAMACIN
N=1024; Nm!"# $! m!s&"asfs=402'; ("!c!)c*a $!
M!s&"!#&=+0,N-1./fs;fc=100; ("!c!)c*a #"&a$#"a
fm=20; ("!c!)c*a m#$a$#"aEc=10; Am*&$ #"&a$#"aEm=5;
Am*&$ m#$a$#"a
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MODULACION AM 50%Ec#"&a$#"a= Ecs*)+2*fc&.; %% Ecac*3) $!
a #"&a$#"aEm#$a$#"a= Ems*)+2*fm&.;%% Ecac*3) $! a
m#$a$#"aA= Ec Em#$a$#"a; %C"!ac*3) $! a !)#!)&!m=
A6[s*)+2*fc&.]; %M#$ac*3)Mf =2/Na7s+ff&+m8N..; %Es!c&"#
m!$*a)&! &"a)sf#"ma$a $!
f#"*!"f= fs+0,N/2./N; %% A)9*s*s $! !s!c&"#c#s!
a;f*:"!+Nam!8P#"&a$#"a8 M#$a$#"a8 Am*&$
m#$a$a.;s7#&+28281.; #&+&+1,N/2.8
Ec#"&a$#"a+1,N/2..;&*&!+ADORA.8 :"*$ #)8
?a7!+&+s..8@a7!++&..;s7#&+2828B,4.;
#&+&+1,N/2.8m+1,N/2.8&+1,N/2.8A+1,N/2.8"8
&+1,N/2.8-A+1,N/2.8".;&*&!+
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N=102B;%% Nm!"# $! m!s&"as
fs=402'; %% ("!c!)c*a $!m!s&"!#&=+0,N-1./fs;fc=100;
%("!c!)c*a #"&a$#"afm=20; %("!c!)c*a m#$a$#"aEc=10; %Am*&$
#"&a$#"aEm=10; %Am*&$ m#$a$#"a
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Ec#"&a$#"a= Ecs*)+2*fc&.;Em#$a$#"a= Ems*)+2*fm&.;A=
Ec Em#$a$#"a; %C"!ac*3) $! a !)#!)&!m= A6[s*)+2*fc&.];
%M#$ac*3)Mf =2/Na7s+ff&+m8N..; %Es!c&"# m!$*a)&!
&"a)sf#"ma$a $!f#"*!"
f= fs+0,N/2./N;%% A)9*s*s $! !s!c&"#c#s!
a;f*:"!+Nam!8P#"&a$#"a8 M#$a$#"a8 Am*&$
m#$a$a.;s7#&+28281.; #&+&+1,N/2.8
Ec#"&a$#"a+1,N/2..;&*&!+ADORA.8 :"*$ #)8
?a7!+&+s..8@a7!+A+&..;s7#&+2828B,4.;
#&+&+1,N/2.8m+1,N/2.8&+1,N/2.8A+1,N/2.8"8
&+1,N/2.8-A+1,N/2.8".;&*&!+
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N=1024; %% Nm!"# $! m!s&"asfs=402';%% ("!c!)c*a $!
m!s&"!#&=+0,N-1./fs;fc=100; %("!c!)c*a
#"&a$#"afm=20; %("!c!)c*a m#$a$#"aEc=5; %Am*&$
#"&a$#"aEm=10; %Am*&$ m#$a$#"aa
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Ec#"&a$#"a= Ecs*)+2*fc&.;Em#$a$#"a= Ems*)+2*fm&.;A=
Ec Em#$a$#"a; %C"!ac*3) $! a !)#!)&!m= A6[s*)+2*fc&.];
%M#$ac*3)Mf =2/Na7s+ff&+m8N..; %Es!c&"# m!$*a)&!
&"a)sf#"ma$a$! f#"*!"
f= fs+0,N/2./N;%% A)a*s*s $! !s!c&"#c#s!
a;f*:"!+Nam!8P#"&a$#"a8 M#$a$#"a8
Am*&$m#$a$a.;s7#&+28281.; #&+&+1,N/2.8
Eca""*!"+1,N/2..;&*&!+ADORA.8 :"*$ #)8
?a7!+&+s..8@a7!+A+&..;s7#&+2828B,4.;
#&+&+1,N/2.8m+1,N/2.8&+1,N/2.8A+1,N/2.8"8
&+1,N/2.8-A+1,N/2.8".;&*&!+
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