consider a signal xt 10 cos2pifct 4 cos 2pifmt
Consider a signal x(t) = 10 cos(2πfct + 4 cos 2πfmt). Assume frequency modulation. The message frequency fm = 2:3 kHz. Calculate the modulation index and find the bandwidth when
(a) fm is doubled and
(b) fm is decreased by one-half.
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