Q$2.$ Compare the DSB$-$SC and SSB$-$SC$,$ & hence calculate total power in following forms of AM: DSB$-$SC & SSB$-$SC$,$ where $400$ W carriers signal is modulated to depth of $75\%.$

Q$3.$ Using the message signal $m(t)=\frac{1}{1+t^2}$ determine and sketch the modulated waves for the following methods of modulation:

$($a$)$ Amplitude modulation with $50\%$ modulation

$($b$)$ Double sideband suppressed carrier modulation

$($c$)$ Single sideband modulation with only the upper sideband transmitted.

$($d$)$ Single sideband modulation with only the lower sideband transmitted.