Suppose that the modulating signal is m(t) = 2cos (2
? fmt) and the carrier signal is xC(t) = AC cos(2 ?fct), which one of the following is a conventional AM signal without over-modulation?
| (A) x(t) = Acm(t) cos(2 |
| (B) x(t) = Ac[1 + m(t)]cos(2 |
| (C) x(t) = Ac cos(2 |
| (D) x(t) = Ac cos(2 |
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