User Guide Part 1

Wi-Fi Array
60 Installing the Wi-Fi Array
802.11n’s speed improvements and because they are optional and configurable, as
opposed to the parts of 802.11n that are fixed. While the settings for 802.11n IAPs
come pre-configured on the Array for robust performance in typical usage, you
should review the settings for your deployment, especially channel bonding. A
global setting is provided to enable or disable 802.11n mode. See “Global Settings
.11n” on page 273 to configure 802.11n operation.
MIMO (Multiple-In Multiple-Out)
MIMO (Multiple-In Multiple-Out) signal processing is one of the core
technologies of 802.11n. It mitigates interference and maintains broadband
performance even with weak signals.
Prior to 802.11n, a data stream was transmitted via one antenna. At the receiving
end, the antenna with the best signal was selected to receive data. (Figure 22)
Figure 22. Classic 802.11 Signal Transmission