Xirrus Wi-Fi Array XR4420 User Manual

Wi-Fi Array
Installing the Wi-Fi Array 73
Two very important techniques to consider are Channel Bonding and Multiple
Data Streams — Spatial Multiplexing because they contribute a large portion of
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 291 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

Xirrus Wi-Fi Array XR4420 Specifications

General

Brand	Xirrus
Model	Wi-Fi Array XR4420
Category	Speaker System
Language	English