Software Guide

Advanced Configuration
Tsunami
®
800 & 8000 Series - Software Management Guide 105
Figure 5-35 MIMO
After configuring the required parameters, click OK and then COMMIT.
Reboot the device, if you have changed any of the MIMO parameters with an asterisk (*) symbol.
Parameter Description
Frequency Extension Frequency Extension is applicable only when the Channel Bandwidth is set to 40 MHz.
While choosing 40MHz bandwidth, you can select either 40 PLUS (Upper Extension
Channel) or 40 MINUS (Lower Extension Channel). 40 PLUS means the center frequency
calculation is done for 20MHz and add another 20MHz to the top edge of 20MHz. 40
MINUS means the center frequency calculation is done for 20MHz and add another
20MHz to the bottom edge of 20MHz.
Guard Interval Guard Interval determines the space between symbols being transmitted. The guard
interval can be configured as either Short GI - 400n seconds or Full GI-800n seconds.
In 802.11 standards, when 40 MHz Channel Bandwidth is configured then Short GI can be
used to improve the overall performance and throughout.
By default, Full GI is enabled for 5 MHz, 10 MHz and 20 MHz channels.
:
·
Short GI-400 nSec is valid only for 40 MHz channel bandwidth
·
Short GI-400 nSec is not valid for 82x devices.
Rx Antennas Status Allows the user to select the antenna(s) for receiving data. Select the checkbox against
each antenna(s) for receiving data and click OK.
: Atleast two Rx antenna ports should be enabled when data stream is dual or
auto.