应用型大学英语视听说教程发展篇2 第四版 Unit 1Wireless Communication.ppt,Ⅰ. Listen to the passage and fill in the blanks. Task 1 Listening for Information 1. What do smartphones allow you to do? They may let you___ , listen to music and___
Wireless Networks Wireless communication is one of the fastest-growing technologies. The demand for connecting devices without the use of cable is increasing everywhere. Wireless LANs can be found in on college campuses, Bus stations, Railway Stations, Airport, in office buildings, and in many publi...
ppt on underwater wireless communication free download
standart IEEE IEEE 802.8 Fiber Optic LAN & MAN (standart FDDI) IEEE 802.10 LAN/MAN security (VPN) IEEE 802.11Wireless LAN (WiFi) IEEE 802.15Wireless PAN (Personal Area Network) bluetooth IEEE 802.16Broadband Wireless Access (WiMax) Content vs Bandwidth Trade off Wireless Communication Maximum ...
fundamentals of wireless communication.ppt,Fundamentals of Wireless Communication David Tse Dept of EECS U.C. Berkeley Course Objective Past decade has seen a surge of research activities in the field of wireless communication. Emerging from this researc
Nonmembers 低功耗传感器网络的间歇无线通信系统 SUMMARY An intermittent wireless communication system has been developed for low-power sensor networks that improves sensor network efficiency by promoting cooperative optimization among the hardware architecture, communication protocol, and multiple access scheme. ...
Wireless communication(无线通信)Wirelesscommunication Wirelesscommunication •Wirelesscommunicationisthetransferofinformationbetweentwoormorepointsthatarenotconnectedbyanelectricalconductor.Wirelesscommunication •Themostcommonwirelesstechnologiesuseradio.Withradiowavesdistancescanbeshort,suchasafewmetersfortelevisionorasfaras...
comparisonof3systems.8.OpportunisticCommunicationandMultiuserDiversity9.MIMOinNetworks 1.TheWirelessChannel WirelessMulipathChannel Channelvariesattwospatialscales:largescalefadingsmallscalefading Large-scalefading •Infreespace,receivedpowerattenuateslike1/r2.•Withreflectionsandobstructions,canattenuateevenmore...
INTRODUCTION TO COMPUTER NETWORKS Wi-Fi/wireless router Closed area network. No access to external networks Single point of failure Computer networks can be used for… -Sharing resources -Online gaming -Online communication such as chat rooms conferencing -For small business and schools to share stud...
Control frames Values of subfields in control frames Addresses BLUETOOTH Bluetooth is a wireless LAN technology designed to connect devices of different functions such as telephones, notebooks, computers, cameras, printers, coffee makers, and so on. A Bluetooth LAN is an ad hoc network, which means...