Doppler spread is a range of frequencies over which received

doppler-spread-is-a-range-of-frequencies-over-which-received

Doppler spread is a range of frequencies over which received Doppler spread is _______

A. Zero

B. Non zero

C. Infinite

D. One

I had been asked this question by my college professor while I was bunking the class.

This interesting question is from Parameters of Mobile Multipath Channels in portion Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

Right answer is B. Non zero

The explanation is: Doppler spread is a range of frequencies over which received Doppler spectrum is essentially non-zero. It is a measure of spectral broadening caused by time rate of change of mobile radio channel.