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[HT Physical Mode]
Operation Mode:
Mixed mode operation –
In this mode, both the MIMO-OFDM system and
the legacy systems shall co-exist. The MIMO system should have the capability to generate
legacy packets for the legacy system and high throughout packets for MIMO-OFDM systems.
So, the burst structure should be decodable to legacy systems and should provide better
performance to MIMO-systems.
Green Field mode operation –
This mode is similar to
mixed mode where the transmission happens only between the MIMO-OFDM systems in the
presence of legacy receivers. However, the MIMO-OFDM packets transmitted in this ode will
have only MIMO specific preambles and no legacy format preambles are present.
Channel Bandwidth:
Specify the channel bandwidth. Select 20 or 20/40, default setting is
20/40
.
Guard Interval:
Guard-Interval is used to reduce interference of multi-path channel. Longer
guard periods allow more distant echoes to be tolerated. However, longer guard intervals
reduce the channel efficiency
MCS:
The Modulation and Coding Scheme (MCS) is a value that determines the modulation,
coding and number of spatial channels. Select the MCS from the pull-down menu 0~15, 32 or
Auto. Default:
Auto
.
Reverse Direction Grant (RDG):
Enable/Disable RDG function. Reverse Direction Grant
(RDG) essentially speeds up data transmission between clients and their wireless access
point/router by allowing other wireless workstations to send/receive data simultaneously
without contending for shared medium.
Aggregation MSDUA (A-MSDU):
A-MSDU increases the maximum frame transmission size
from 2,304 bytes to almost 8k bytes (7935 to be exact) while A-MPDU allows up to 64k bytes.
3.5.2 Advanced
These settings are only for more technically advanced users who have a sufficient knowledge
about wireless LAN. These settings should not be changed unless you know what effect the
changes will have on your AP router. Click
Advanced
on Wireless Settings, below screen will
prompt for Advanced Setting.
