Question

In a frequency selective fading, mobile radio channel possess a constant gain and a linear phase over bandwidth smaller than bandwidth of transmitted signal.

(a) True

(b) False

This question was addressed to me in class test.

This question is from Types of Small- Scale Fading topic in section Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

Answer 1

Right answer is (a) True

To explain: If the channel possesses a constant gain and linear phase response over a bandwidth that is smaller than the bandwidth of transmitted signal, then the channel creates frequency selective fading on the received signal. Frequency selective fading channel are much more difficult to model than flat fading channel.