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802.11 |
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802.11A family of IEEE standards for wireless LANs that extend wired Ethernet (802.3) into the wireless domain. The 802.11 standard is more widely known as "Wi-Fi" because the Wi-Fi Alliance, an organization independent of IEEE, provides certification for products that conform to 802.11 (see Wi-Fi Alliance).
Spread
Cell Spectrum
Speed Radius Modulation Coding
(Mbps) (ft.) Method Method
802.11b (DSSS Transmission, 2.4 GHz)
1 ** BPSK Barker (11 chip)
2 ** QPSK Barker (11 chip)
5.5 150 QPSK CCK (8 chip)
11 115 QPSK CCK (8 chip)
802.11g (OFDM Transmission, 2.4 GHz)
See chart below for cell radius differences.
802.11a (OFDM Transmission, 5 GHz)
6 95 BPSK Rate 1/2 Convolutional
9 75 BPSK Rate 3/4 Convolutional
12 75 QPSK Rate 1/2 Convolutional
18 58 QPSK Rate 3/4 Convolutional
24 48 16 QAM Rate 1/2 Convolutional
36 35 16 QAM Rate 3/4 Convolutional
48 25 64 QAM Rate 2/3 Convolutional
54 22 64 QAM Rate 3/4 Convolutional
802.11n (OFDM Transmission, 2.4 & 5 GHz)
Expected in 2009 (see 802.11n).
** used as a fallback rate
Data courtesy of Intersil Corporation.
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| ? Mentioned in | ? References in periodicals archive | |
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HNS is the First Broadband Satellite Solutions Provider to Join The
Industry Association in Support of the 802. Innovative use of communications
technology, large, onboard data storage and special-purpose processors
give 802. ] wireless device server from Lantronix (Nasdaq: LTRX) and
the availability of an integrated solution to enhance its 303 MHz and
433 MHz active RFID readers with 802. |
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