802 11® Wireless Networks: The Definitive Guide phần 5 pptx

... lower band (5. 15- 5. 25 GHz) 40 mW (2 .5 mW/MHz) 36 40 44 48 5. 180 5. 200 5. 220 5. 240 U-NII mid-band (5. 25- 5. 35 GHz) 200 mW (12 .5 mW/MHz) 52 56 60 64 5. 260 5. 280 5. 300 5. 320 Simplistic ... band (5. 7 25- 5.8 25 GHz) 800 mW (50 mW/MHz) 149 153 157 161 5. 7 45 5. 7 65 5. 7 85 5. 8 05 [a] The allowed power is the maximum outpu...

Ngày tải lên: 14/08/2014, 13:20

... GHz C-Band Radar (weather) 5. 25- 5.9 25 GHz C-Band ISM 5. 7 25- 5.8 75 GHz C-Band satellite uplink 5. 9 25- 6.4 25 GHz X-Band 8-12 GHz X-Band Radar (police/weather) 8 .5- 10 .55 GHz Ku-Band 12-18 GHz ... common 802. 11 equipment as this book was written. 802. 11g up to 54 Mbps 2.4 GHz Not yet standardized. 802. 11® Wireless Networks: The Defin...

Ngày tải lên: 14/08/2014, 13:20

... 255 ). Each time the retry counter increases, the contention window moves to the next greatest power of two. The size of the contention window is limited by the physical layer. For example, the ... which is the reverse of the order used in Figure 3-10. Therefore, the frame type is the third bit in the frame control field followed by the second bit (b3 b2), and...

Ngày tải lên: 14/08/2014, 13:20

... use the source address of frames as the identity of the sender; no fields within the frame are used to further identify the sender. There are two information elements in the body of the authentication ... successful 802. 1x authentication, the access point drops all non -802. 1x traffic. Once the authentication succeeds, the access point removes the filter and allow...

Ngày tải lên: 14/08/2014, 13:20

... States, the following three bands are called the Unlicensed National Information Infrastructure (UNII) bands: [2] [2] The UNII bands are defined by FCC part 15. 407. • 5. 15- 5. 25 GHz • 5. 25- 5. 35 ... GHz • 5. 25- 5. 35 GHz • 5. 7 25- 5.8 25 GHz Devices operating in the UNII bands must obey limitations on radiated power, but there are no further constraints impose...

Ngày tải lên: 14/08/2014, 13:20

... IPADDR=192.168.200.1 25 NETMASK= 255 . 255 . 255 .0 NETWORK=192.168.200.0 BROADCAST=192.168.200. 255 ONBOOT=no Bringing up the interface is a matter of running ifup with the interface name as an ... classify them any further. Brave, stout-hearted readers can order the specification from the PCMCIA and use the dump_cis tool on Linux to read the CIS of inserted cards. The...

Ngày tải lên: 14/08/2014, 13:20

... downlink 3.7-4.2 GHz C-Band Radar (weather) 5. 25- 5.9 25 GHz C-Band ISM 5. 7 25- 5.8 75 GHz C-Band satellite uplink 5. 9 25- 6.4 25 GHz X-Band 8-12 GHz X-Band Radar (police/weather) 8 .5- 10 .55 GHz Ku-Band 12-18 GHz Ku-Band ... operate a low-power wireless LAN. 802. 11® Wireless Networks The Definitive Guide By Matthew Gast Publisher: O'Reilly Pub Date: April 2 0 0...

Ngày tải lên: 05/05/2014, 12:46

... GHz C-Band Radar (weather) 5. 25- 5.9 25 GHz C-Band ISM 5. 7 25- 5.8 75 GHz C-Band satellite uplink 5. 9 25- 6.4 25 GHz X-Band 8-12 GHz X-Band Radar (police/weather) 8 .5- 10 .55 GHz Ku-Band 12-18 GHz ... loss due to the unreliability of the wireless medium. products based on the 802. 11a standard, WECA will allow use of the Wi-Fi5 mark. The " ;5& quot; reflect...

Ngày tải lên: 04/07/2014, 08:47

... Beacon 1 802. 11® Wireless Networks: The Definitive Guide – ISBN: 0 -59 6-00183 -5 100 transmitting the frame, the mobile station processes the frame with WEP. The header identifying the frame ... as the identity of the sender; no fields within the frame are used to further identify the sender. There are two information elements in the body of the aut...

Ngày tải lên: 25/03/2014, 10:39

... Ant: The Definitive Guide 50 • The source directory • The classpath • The destination directory We specify the source directory (the place in which the Java source files are stored) with the ... can use them in your buildfiles. Ant: The Definitive Guide 52 3.4.3.4 The module target The module target is almost identical to the bot target. The javac...

Ngày tải lên: 13/08/2014, 21:21