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802.11
802.11 is a versatile wireless technology
that acts as a cable replacement in a standard local area network.
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The name 802.11 is derived from
the IEEE standard that it represents. 802.11 refers to a family
of wireless standards, each differing slightly in the implementation,
but achieving the same goal, networking computers without
wires.
IEEE 802.11g, has overtaken IEEE 802.11b as the most popular
standard. This is commonly called Wireless LAN or Wi-Fi. |
Radio
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At the present time
the most commonly found 802.11 variant is 802.11g The Wi-Fi organization
was created to ensure interoperability between 802.11b products.
With a realistic throughput of 6Mbps, it is fast enough for network
applications, file transfers, internet access and all other standard
LAN uses.
Below is a table outlining
the most common Wireless LAN technologies currently on the market.
| IEEE |
Speed |
Indoor
Range |
Outdoor
Range |
Frequency |
| 802.11 |
1-2 Mbps |
100 metres |
up to 23 km |
2.4 GHz FHSS
and DQPSK FHSS |
| 802.11b |
11 Mbps |
100 metres |
up to 23 km |
2.4 GHz DSSS |
| 802.11a |
54 Mbps |
100 metres |
up to 5 km * |
5 GHz OFDM |
| 802.11g |
54 Mbps |
100 metres |
up to 23 km |
2.4 GHz OFDM |
* Currently no 802.11a products on the market
that support external antenna.
Simply Wireless use IEEE 802.11 technologies to create wireless
networks in any industry or corporate environment. Using specialized
antenna equipment, Simply Wireless use 802.11b technologies to
construct wireless bridges.
Check back soon for more detailed documents
explaining 802.11 standards.
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