This paper elaborates on the many sources of interference and how to mitigate them. Microwave ovens, cordless phones, Bluetooth, and wireless video cameras, are a few devices that can cause interference. Addresses common misconceptions, including:

• A high density of APs can solve interference problems
• There is no interference at 5GHz
• WiFi interference doesn't happen very often

A must read for anyone deploying or managing a wireless network!