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_______ is a statistical measure of time duration over which channel impulse response is invariant.

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_______ is a statistical measure of time duration over which channel impulse response is invariant.

(a) Coherence time

(b) Doppler spread

(c) Mean excess delay

(d) Rms delay spread

This question was posed to me in an online interview.

Origin of the question is Parameters of Mobile Multipath Channels in section Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

1 Answer

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Best answer
Correct choice is (a) Coherence time

The best explanation: Coherence time is actually a statistical measure of the time duration over which the channel impulse response is essentially invariant. It quantifies the similarity of the channel response at varying times.

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