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《霍邱县学英语-在线英语培训-网上学英语》由会员上传分享，免费在线阅读，更多相关内容在工程资料-天天文库。
1、每天前20名注册可获免费名师辅导学英语记词汇练口语真人一对一教学抢注网址：www.englishvip.com/wenkxd.htmWhatisBluetooth? Bluetoothisauniversalradiointerfaceinthe2.45GHzfrequencybandthatenablesportableelectronicdevicestoconnectandcommunicatewirelesslyviashort-range,adhocnetworks.Eachunitcan
2、simultaneouslycommunicatewithuptoseverotherunitsperpiconet.Moreover,eachunitcansimultaneouslybelongtoseveralpiconets. WhatisBluetoothTechnology? BluetoothtechnologywhichapartfromEricsson,hasgainedthesupportofNokia,IBM,Toshiba,Intelandmanyothermanufact
3、urers eliminatestheneedforwires,cablesandconnectorsforandbetweencordlessormobilephones,modems,headsets,PDAs,Computers,printers,projectors,localareanetworks,andsoon,andpavesthewayfornewandcompletelydifferentdevicesandapplications.TechnologyCharacteristi
4、cs 1Ms/ssymbolrateexploitsmaximumavailablechannelbandwidth Fastfrequencyhoppingavoidsinterference Adaptiveoutputpowerminimizesinterference Shortdatapacketsmaximizecapacityduringinterference Fastacknowledgeallowslowcodingoverheadforlinks CVSD(Conti
5、nuousVariableSlopeDeltaModulation)voicecodingenablesoperationathighbit-errorrates Flexiblepackettypessupportswideapplicationrange AirinterfacetailoredtominimizecurrentconsumptionBasicTechnicalInformation—Baseduponasmall,highperformanceintegratedradiot
6、ransceiver,eachofwhichisallocatedaunique48-bitaddressderivedfromtheIEEE802·standard.洛基国际英语竭诚为您服务每天前20名注册可获免费名师辅导学英语记词汇练口语真人一对一教学抢注网址：www.englishvip.com/wenkxd.htm Operateintheunrestricted2.45GHzISMfreeband,Whichisavailablegloballyalthoughslightvariatio
7、noflocationandwidthofbandapply Rangesetat10mtooptimizefortargetmarketofmobileandbusinessuser Grossdatarate1Mbit/swithsecondgenerationplanstoincreaseto1Mbit/s One-to-oneconnectionsallowmaximumdatatransferrateof721kbit/s(3voicechannels) Usespacketswit
8、chingprotocolbasedonfrequencyhopschemewith1600hops/stoenablehighperformanceinnoisyradioenvironments.Theentireavailablefrequencyspectrumisusedwith79hopsof1Mhzbandwidth,analogoustotheIEEE802.11standard Lowpowerconsumptionlongevity
