Question

Which of the following describes the average fading rate within a local area?

(a) Angular spread

(b) Angular constriction

(c) Azimuthal direction of maximum fading

(d) Angle of arrival

This question was posed to me during an online interview.

Asked question is from Multipath Shape Factors for Small in chapter Mobile Radio Propagation: Small – Scale Fading and Multipath of Wireless/Mobile

Answer 1

Correct answer is (a) Angular spread

The explanation is: Angular spread describes the average fading rate within a local area. The average of the two fading rate variances, regardless of the orientation of the measurement, is always given by averaging the variances observed over two perpendicular directions within the local area.