Anyone good with cosine law/GSM theory?

Associate
Joined
18 Oct 2002
Posts
2,417
Okay, naughty I know, but I need your help. Got an exam later today, and one of the bits of theory I'm struggling with is this;

It's related to the cell re-use pattern within a perfect "hexagon" shaped GSM cell.

The question:

"Prove that for a hexagonal geometry, the co-channnel reuse ratio is given by Q = sqrt(3N),

where N = i**2 + i*j + j**2."

Cosine law is used, but I keep getting stumped.

So, any bods out there ? :)

This might help understand what I'm chewing on:
 
Back
Top Bottom