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

Small-scale fading is a temporary effect that describes rapid fluctuations in the amplitude and phase of a radio signal over a short period of time or distance.  Multipath is a propagation phenomenon that occurs when radio signals reach a receiving antenna by two or more paths. Multipath propagation results in a time-varying signal as the mobile moves position.  Multipath and fading can significantly impact the performance of wireless communication systems. Topics include: Multipath Propagation, Impulse Response Model, Multipath Measurements, Mobile Multipath Channels, Small-Scale Fading... Show more

Small-scale fading is a temporary effect that describes rapid fluctuations in the amplitude and phase of a radio signal over a short period of time or distance. 

Multipath is a propagation phenomenon that occurs when radio signals reach a receiving antenna by two or more paths. Multipath propagation results in a time-varying signal as the mobile moves position. 
Multipath and fading can significantly impact the performance of wireless communication systems.

Topics include: Multipath Propagation, Impulse Response Model, Multipath Measurements, Mobile Multipath Channels, Small-Scale Fading Types, Rayleigh Distribution, Multipath Fading Channels, & Small-Scale Fading Factors.

Related: Wireless Communication Systems Practice Test: Large - Scale Path Loss 

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