Question

Co-channel ratio in terms of cluster size is defined as _________

(a) $\sqrt{(3N)}$

(b) N

(c) 3N

(d) √N

I had been asked this question during a job interview.

The query is from Interference and System Capacity in portion The Cellular Concept – System Design Fundamentals of Wireless/Mobile

Answer 1

Right choice is (a) $\sqrt{(3N)}$

The best explanation: Co-channel reuse is defined using $\sqrt{(3N)}$. A small value of Q provides larger capacity since the cluster size N is small. However, a large value of Q improves the transmission quality, due to smaller level of co-channel interference.