fm_1.m

对常见的调制信号在软件无线电的通用平台下进行调制解调。所有信号均通过正交分解后

clear;
f=2;
fc=20;
t = [0.001:0.001:10];
m = 20*sin(2*pi*f*t);
plot(t,m);
axis([0,10,-30,30]);
s = -5*(cos(4*pi*t)-1)/pi;  %对m(t)积分.int('sin(4*pi*k)','k',0,'t')
I = cos(s);
%plot(t,I);
Q = -sin(s);
%plot(t,Q);
t = linspace(0,10,10000);
I = [t',I'];
Q = [t',Q'];