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______ leads to time dispersion and frequency selective fading.

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______ leads to time dispersion and frequency selective fading.

(a) Doppler spread

(b) Multipath delay spread

(c) Time dispersive parameters

(d) Frequency delay spread

I had been asked this question in exam.

Enquiry is from Types of Small- Scale Fading topic in portion Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

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The correct choice is (b) Multipath delay spread

The explanation is: Multipath delay spread leads to time dispersion and frequency selective fading. Doppler spread leads to frequency dispersion and time selective fading. These two propagation mechanism are independent of each other.

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