By James Hanback
Let's see. If you overlay the 802.11a standard with 802.11b standard and subtract the 5-gigahertz (GHz) band, you get an approximate 802.11g standard. Then add back the 5-GHz band, add four multiple-input and multiple-output (MIMO) streams to get the 802.11n standard. Subtract the 2.4-GHz band, multiply the available MIMO streams by 2, and you get the 802.11ac standard.
