Amplitude Modulation using Matlab 7.0

Its the first project given by my professor..Firstly i make a search for it on internet and collected some resource..then with the help of some of my mates i completed it successfully.Here is the Matlab code for Amplitude Modulation using Matlab 7.0.Now i am trying to generate code for frequency modulation.Now a days CDMA (code division multiplexing) technology is used which has less noise in the out put as compared to other FDMA or TDMA.

Matlab code for AM

t=0:0.001:1;

vd=8*cos(2*pi*5*t);

vc=0.1*cos(2*pi*15*t);

ft=vc.*vd;

am=ft+vc;

figure(1)

plot(t,vd);

figure(2)

plot(t,vc);

figure(3)

plot(t,am);

Here is the output of the coding!

Carrier signal

Orignal singal(information signal)Amplitude Modulated signal