User's Manual
Table Of Contents
- Table of Contents
- List of Figures
- Introduction
- Installing the Wireless Array
- Installation Prerequisites
- Planning Your Installation
- Installation Workflow
- Installing Your Wireless Array
- Powering Up the Wireless Array
- Establishing Communication with the Array
- Entering the License
- Performing the Express Setup Procedure
- The Web Management Interface
- Viewing Status on the Wireless Array
- Configuring the Wireless Array
- Express Setup
- Network
- Services
- VLANs
- Tunnels
- Security
- SSIDs
- Groups
- IAPs
- WDS
- Filters
- Clusters
- Using Tools on the Wireless Array
Wireless Array
36 Installing the Wireless 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 304 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 16)
Figure 16. Classic 802.11 Signal Transmission
MIMO signal processing uses multiple antennas to send and receive data. It takes
advantage of multipath reflections to improve signal coherence and greatly
increase receiver sensitivity (Figure 17).