Q4. For the following standard amplitude modulation system shown in Fig.Q4, derive the expression and
sketch the spectrum of $x(t)$, $y(t)$, $z(t)$, $v(t)$.
$x(t)$
$y(t)$
$z(t)$
$v(t)$
$m(t)$
X
Channel
$h_c(t)$
Filter
X
$h_f(t)$
$\cos\omega_0t$
$M(\omega)$
$H_c(\omega)$
$1$
$-\omega_m$
$\omega_m$
$-\omega_0$
$\omega_0$
Fig.Q4
$\cos\omega_0t$
$H_F(\omega)$
$1$
$-\omega_m$
$\omega_m$