Question 1. Select the correct statement regarding the difference between the FM and the AM modulated signal waveforms

. a. There is no difference between the FM and AM signal waves because they are both modulated by the same message wave, m(t) = Amcos(2fmt)

b. Both AM and FM modulated signals accurately represents the message wave

c. The AM modulated signal accurately represents the message; however the FM modulated signal does not accurately represent the message wave

d. All statements are correct.

AM modulation FM modulation amplitude amplitude 1 1 2 3 time 10-2 combined message and AM signal 0 1 2 3 time 103 com bi ned message and FM signal amplitude amplitude 1 2 1 2 3 10-3 3 x103 time time