I’ve been teaching WiFi for many years now. And one concept folks seem to have a hard time with is co-channel interference. Not that there *is* interference, that’s pretty obvious, but at what level does co-channel interference actually start to ‘hurt’ the Wireless LAN?
I’ve started to call these areas ‘Want’ – ‘Don’t Want’ – ‘Don’t Care’ – but the concept is still the same.
Question: At what point does another device on the same channel equate to a ‘collision domain’?
So I’m asking for the reader’s help in deciding which of the following graphics make more sense?
Which should I use in classes?
Thanks for your help!