Hi all
Does any one have a QAM or QPSK PassBand mod/demod .m files?
I tryed to program it myself but when I multiply the quadrature component by sin I get values that very close to 0, ( I do not have a problem when I choose low Carrier Freq)
it's looks like this : imag(Y
)*A*sin(2*pi*Fc*t);
while Y
is the quadrature component and Fc is 10000Hz.
When I multiplying the inphase component by cos I get the correct signal
I would appreciate if anyone can explain to me whas wrong in my code.. and also If anyone can send me to my email or post here .m file of QAM/QPSK PassBand Transiever.