Question

Uncorrelated fading occurs when

(a) Time span is small

(b) Time span is large

(c) Does not depend on time span

(d) None of the mentioned

I had been asked this question in a job interview.

My doubt is from Diversity Technique and Rake Receivers topic in section Fading Channels of Digital Communications

Answer 1

Right option is (b) Time span is large

To elaborate: As the time span increases, the fading is more uncorrelated and effectiveness also increases.