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In which technique is phase coherence hard to maintain?

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in Digital Communications by (828k points)
In which technique is phase coherence hard to maintain?

(a) Direct sequence

(b) Frequency hopping

(c) Direct sequence & Frequency hopping

(d) None of the mentioned

This question was addressed to me during an online interview.

My question is taken from Direct Sequence and Frequency Hopping in division Spread Spectrum Techniques of Digital Communications

1 Answer

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Best answer
Correct choice is (b) Frequency hopping

Easiest explanation: In frequency hopping spread spectrum phase coherence is hard to maintain from hop to hop.

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