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Advanced Configuration
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.
Data Streams MIMO radio uses multiple antennas for transmitting and receiving the data.
The data streams supported by the device are as follows:
• Single: In single data stream, the data frames are transmitted in parallel over all the
antennas. This stream is recommended for longer range.
• Dual: In dual data stream, the data frames are distributed across the antennas and
transmitted. This stream is recommended for higher throughput.
: Data streams is not applicable when DDRS is enabled.
Antenna Status
Tx Antenna Status Allows the user to select the antenna(s) for data transmission. Select the checkbox against
each antenna(s) for data transmission and click Ok.
: Atleast two Tx antenna ports should be enabled when Data Stream is dual, or
DDRS Stream Mode is set to auto or dual.
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
DDRS Stream Mode is set to auto or dual.
: Modifying the Guard Interval and Data Stream configuration values, will reset the Tx Rate to default value.
Tsunami® 8100 Series - Software Management Guide 58