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Preamble Type:
Select
Long
or
Short
Preamble type. Preamble is a sequence
of bits transmitted at 1Mbps that allows the PHY circuitry to reach steady-state
demodulation and synchronization of bit clock and frame start. Two different
preambles and headers are defined: the mandatory supported Long Preamble
and header, which interoperates with the 1 Mbit/s and 2 Mbit/s DSSS
specification (as described in IEEE Std 802.11), and an optional Short Preamble
and header (as described in IEEE Std 802.11b). At the receiver, the Preamble
and header are processed to aid in demodulation and delivery of the PSDU. The
Short Preamble and header may be used to minimize overhead and, thus,
maximize the network data throughput. However, the Short Preamble is
supported only from the IEEE 802.11b (High- Rate) standard and not from the
original IEEE 802.11. That means that stations using Short-Preamble cannot
communicate with stations implementing the original version of the protoco
TX Rates:
User also can fix the transmission at specific data rate, if choose
“Auto” data rate, the Wireless Ethernet Adapter will change the data rate to have
the best receive or transmit quality.
