802.11b-1999/Cor1-2001, IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 2: Higher-speed Physical Layer (PHY) extension in the 2.4 GHz band—Corrigendum1
標簽： Telecommunications Information information technology
上傳時間： 2013-12-10
上傳用戶：gxf2016
IEEE 802.11d-2001, Amendment to IEEE 802.11-1999, (ISO/IEC 8802-11) Information technology--Telecommunications and information exchange between systems--Local and metropolitan area networks--Specific requirements--Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) Specifications: Specification for Operation in Additional Regulartory Domains
標簽： 802.11 IEEE Information technology
上傳時間： 2014-01-21
上傳用戶：壞天使kk
IEEE 802.11e-2005, IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications: Amendment 8: Medium Access Control (MAC) Quality of Service Enhancements
標簽： Telecommunications IEEE Information information
上傳時間： 2016-10-02
上傳用戶：rishian
IEEE 802.11g-2003 IEEE Standard for Information technology—Telecommunications and information exchange between systems—Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 4: Further Higher-Speed Physical Layer Extension in the 2.4 GHz Band
標簽： Telecommunications IEEE Information information
上傳時間： 2016-10-02
上傳用戶：cx111111
IEEE 802.11i-2004 Amendment to IEEE Std 802.11, 1999 Edition (Reaff 2003). IEEE Standard for Information technology--Telecommunications and information exchange between system--Local and metropolitan area networks?Specific requirements--Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications--Amendment 6: Medium Access Control (MAC) Security Enhancements
標簽： IEEE 802.11 Amendment Standard
上傳時間： 2013-12-21
上傳用戶：ywqaxiwang
IEEE 802.11j-2004 IEEE Standard for Information technology—Telecommunications and information exchange between systems--Local and metropolitan area networks—Specific requirements—Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications—Amendment 7: 4.9 GHz–5 GHz Operation in Japan
標簽： Telecommunications IEEE Information information
上傳時間： 2014-01-17
上傳用戶：asasasas
RECOMMENDATION ITU-R M.1653*,** Operational and deployment requirements for wireless access systems including radio local area networks in the mobile service to facilitate sharing between these systems and systems in the Earth exploration-satellite service (active) and the space research service (active) in the band 5 470-5 570 MHz within the 5 460 5 725 MHz range
標簽： RECOMMENDATION requirements Operational deployment
上傳時間： 2016-10-21
上傳用戶：miaochun888
無線通信的各種運動模型。適用于移動通信、無線傳感器網絡等領域。 包括：Random walk、random waypoint、random direction、boundless simulation area、 gauss-markov等運動模型 - probabilistic random walk
標簽： random simulation direction boundless
上傳時間： 2014-11-12
上傳用戶：libinxny
傳統的以太網是一個廣播型網絡，網絡中的所有主機通過HUB 或交換機相連，處在 同一個廣播域中。HUB 是物理層設備，沒有交換功能，接收的報文會向所有端口轉 發；交換機是鏈路層設備，具備根據報文的目的MAC 地址進行轉發的能力，但在 收到廣播報文或未知單播報文（報文的目的MAC 地址不在交換機MAC 地址表中） 時，也會向除交換機報文入端口之外的所有端口轉發。 上述情況使網絡中的主機會收到大量并非以自身為目的地的報文，在浪費大量帶寬 資源的同時，也造成了嚴重的安全隱患。 隔離廣播域的傳統方法是使用路由器，但是路由器成本較高，而且端口較少，無法 劃分細致的網絡。 為解決以太網交換機在LAN 中無法限制廣播的問題，出現了VLAN（Virtual Local area Network，虛擬局域網）技術。
上傳時間： 2014-01-03
上傳用戶：qb1993225
This approach addresses two difficulties simultaneously: 1) the range limitation of mobile robot sensors and 2) the difficulty of detecting buildings in monocular aerial images. With the suggested method building outlines can be detected faster than the mobile robot can explore the area by itself, giving the robot an ability to “see” around corners. At the same time, the approach can compensate for the absence of elevation data in segmentation of aerial images. Our experiments demonstrate that ground-level semantic information (wall estimates) allows to focus the segmentation of the aerial image to find buildings and produce a ground-level semantic map that covers a larger area than can be built using the onboard sensors.
標簽： simultaneously difficulties limitation addresses
上傳時間： 2014-06-11
上傳用戶：waitingfy
