If coherence bandwidth is smaller than the bandwidth of the signal, _____ fading occurs.(a) Flat(b) Frequency selective(c) Fast fading(d) Time selectiveI have been asked this question during an interview.This key question is from Signal Time Spreading in portion Fading Channels of Digital Communications

If coherence bandwidth is smaller than the bandwidth of the signal, __

1.	If coherence bandwidth is smaller than the bandwidth of the signal, _____ fading occurs.(a) Flat(b) Frequency selective(c) Fast fading(d) Time selectiveI have been asked this question during an interview.This key question is from Signal Time Spreading in portion Fading Channels of Digital Communications
Answer» Correct answer is (b) Frequency selective To elaborate: Frequency selective fading OCCURS when coherence BANDWIDTH is smaller than the bandwidth of the TRANSMITTED SIGNAL.

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