802.11 Wireless Networks: The Definitive GuideAs we all know by now, wireless networks offer many advantages over fixed (or wired) networks. Foremost on that list is mobility, since going wireless frees you from the tether of an Ethernet cable at a desk. But that's just the tip of the cable-free iceberg. Wireless networks are also more flexible, faster and easier for you to use, and more affordable to deploy and maintain. The de facto standard for wireless networking is the 802.11 protocol, which includes Wi-Fi (the wireless standard known as 802.11b) and its faster cousin, 802.11g. With easy-to-install 802.11 network hardware available everywhere you turn, the choice seems simple, and many people dive into wireless computing with less thought and planning than they'd give to a wired network. But it's wise to be familiar with both the capabilities and risks associated with the 802.11 protocols. And 802.11 Wireless Networks: The Definitive Guide, 2nd Edition is the perfect place to start. This updated edition covers everything you'll ever need to know about wireless technology. Designed with the system administrator or serious home user in mind, it's a no-nonsense guide for setting up 802.11 on Windows and Linux. Among the wide range of topics covered are discussions on:
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... Mbps to 4.5 Mbps , the modulation scheme has been defined only for 1.0 Mbps and 2.0 Mbps . See Table 11-3 . Table 11-3 . PSF meaning Bits ( 1-2-3 ) 000 001 010 011 100 101 Data rate 1.0 Mbps 1.5 Mbps 2.0 Mbps 2.5 Mbps 3.0 Mbps 3.5 Mbps 4.0 ...
The Definitive Guide Matthew Gast. 1 Mbps DBPSK 2 Mbps DQPSK 5.5 / 11 Mbps CCK 5.5 / 11 Mbps PBCC 1 Mbps DBPSK Sync Long 128 scrambled 1s SFD 16 bits Signal Service Length CRC PSDU 8 bits 8 bits 16 bits 16 bits 144 bits -48 bits Variable ...
... Mbps DSSS -94 4,850 13.9 100 % 2 Mbps DSSS -93 4,300 12.3 89 % 5.5 Mbps CCK -92 3,850 11.0 79 % 11 Mbps CCK -90 3,050 8.7 63 % 6 Mbps OFDM -86 1,930 5.5 40 % 9 Mbps OFDM -86 1,930 5.5 40 % 12 Mbps OFDM -86 1,930 5.5 40 % 18 Mbps OFDM ...
Contents
Introduction to Wireless Networking | 1 |
Overview of 802 11 Networks | 12 |
Mobility Support | 28 |
Copyright | |
21 other sections not shown
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802.11 Wireless Networks: The Definitive Guide: The Definitive Guide Matthew S. Gast Limited preview - 2005 |