Describe the consequence of the Doppler Effect on the receiver in an isotropic scattering environment. Based on your description, speculate on the meaning of the term “Doppler Spread”.

(a) Is the term “Doppler Spread” more appropriate in describing the channel than “Doppler Shift” in a scattering environment? Why?
(b) Observe the inverse relationship that exists between “Coherence Bandwidth” and “Delay Spread” in a wireless channel. Attempt to similarly define a term “Coherence Time” that has an inverse relationship with the “Doppler Spread”. What information does this term give about the channel?