Question

Which of the factor does not determine the correlation coefficient?

(a) Polarization angle

(b) Cross polarization discrimination

(c) Offset angle from the main beam direction

(d) Coherence time

I have been asked this question in a national level competition.

Asked question is from Diversity Techniques in division Equalization, Diversity and Channel Coding of Wireless/Mobile

Answer 1

Right choice is (d) Coherence time

Easiest explanation: The correlation coefficient is determined by three factors, polarization angle, offset angle from the main beam direction of the diversity antenna, and the cross polarization discrimination. The correlation coefficient generally becomes higher as offset angle becomes large.