Electronics and Communication Engineering - Signals and Systems - Discussion

Discussion Forum : Signals and Systems - Section 1 (Q.No. 31)
31.
A signal m(t) is multiplied by a sinusoidal waveform of frequency fc such that
v(t)=m(t) cos 2pfct
If Fourier transform of m(t) is M(f), Fourier transform of v(t) will be
0.5 M(f + fc)
0.5 M(f - fc)
0.5 M(f + fc) + 0.5 M(f - fc)
0.5 M(f - fc) + 0.5 M(f - fc)
Answer: Option
Explanation:

It is a modulation process. The resultant has (f + fc) and (f - fc) terms.

Discussion:
2 comments Page 1 of 1.

Rutuja Bhilare said:   9 years ago
From my point of view, option c and d both are same.

Manthan said:   9 years ago
Correct @Rutuja.

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