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Communication SystemsSampling

According to the sampling theorem, a band-limited signal with maximum frequency fm should ideally be sampled at a rate of at least?

  • Afm/2
  • Bfm
  • C2fm
  • D4fm only
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Correct Answer: C. 2fm
Explanation: The Nyquist sampling criterion requires fs to be at least 2fm for a signal band-limited to fm, under ideal conditions.
Reference: Standard communication systems: sampling
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