Question:-
An amplitude modulated signal s(t) = Ac[1+km(t)]cos2pfct (message signal m(t) has power p and constant k determines the modulation index) is sent through an AWGN channel and detected using an envelope detector. If the average carrier power is large compared to the noise power and any DC component present at the envelope detector output is removes, the figure of merit of the detector is
Option (A)
k2P/(1+k2P)
Option (B)
P/(1+k2P)
Option(C)
2P/(A2c+2k2P)
Option(D)
P/(k2+P)
Correct Option:
(A)
question-answer-faq-2037