Ok so I have this question about Nyquist rate:
"Assume that Nyquist rate for signal X1( t) is fa.What is the Nyquist rate for the signal X2(t)=X1(t) * cos(2*pi*fb*t)?"
I have no idea how to do this question,the only thing I can deduce is that frequency of signal X1(t) is fa/2 but thats about it.Does it have anything to do with trigonometric identities?
Thanks alot!
"Assume that Nyquist rate for signal X1( t) is fa.What is the Nyquist rate for the signal X2(t)=X1(t) * cos(2*pi*fb*t)?"
I have no idea how to do this question,the only thing I can deduce is that frequency of signal X1(t) is fa/2 but thats about it.Does it have anything to do with trigonometric identities?
Thanks alot!