资源描述：
《外文翻译---3g技术》由会员上传分享，免费在线阅读，更多相关内容在应用文档-天天文库。
1、附录A外文原文3GTechnology3Gisaglobaldevelopmentofcommunicationstandardsandtechnologies.Thisdevelopmentwillleadtoyourbeingabletoaccessmultimediaserviceswithyourmobilephone.YoumayhaveseentermsinthenewslikeGPRS,EDGE,WCDMA,andUMTS.Alloftheseareconceptsrelatedtodevelopmentofmobilecommunicationnetw
2、orksto3G.Althoughthetechnologybehind3Gmayseemcomplicated,thewaysinwhich3Gwillaffectallofourlivesareeasytoimagine.Justimaginehavingacombinedcamera,videocamera,computer,stereo,andradioincludedinyourmobilephone.Rich-mediainformationandentertainmentwillbeatyourfingertipswheneveryouwantanywh
3、erethereisawirelessnetwork.Mobilecommunicationismovingfromsimplevoicetorichmedia,whereweusemoreofoursensestointensifyourexperiences.Butnotallofthiswillhappenatonce.3Gisanevolutiontoacommunicationsidealthatwecannotseetheendofyet.WedoknowthatmobilemultimediawillhittheJapanesemarkets,andEu
4、ropeandNorthAmericawillfollowsoonafter.Wealsoknowthat,regardlessofwhetheryoufindnewtechnologiesintimidatingorfascinating,3Gwillbringahostofmobileservicesthatwillbringmoreinformation,moreefficiency,andmorejoytoyourlife.3Gbringstogetherhigh-speedmobileaccessandInternetProtocol(IP)-basedse
5、rvicesintoonepowerfulenvironment.ThesteptowardsIPisvital.IPispacket-based,whichinsimpleterms,meansuserscanbe‘online’atalltimes,butwith-outhavingtopayuntilweactuallysendorreceivedata.TheconnectionlessnatureofIPalsomakesaccessalotfaster:filedownloadscantakeafewsecondsandwecanbeconnectedto
6、ourcorporatenetworkwithasingleclick.Thisdoesn'tjustmeanfastmobileconnectiontotheWorldWideWebbyliberatingusfromslowconnections,cumbersomeequipmentandimmovableaccesspoints,3Gwillenablenewwaystocommunicate,accessinformation,conductbusinessandlearn.3Gintroduceswidebandradiocommunications,wi
7、thaccessspeedsofupto2mbps.Comparedwithtoday’smobilenetworks,3Gwillsignificantlyboostnetworkcapacity–sooperatorswillbeabletosupportmoreusers,aswellasoffermoresophisticatedservices.TheGSMstandardiscontinuallyevolvingtoincorporatenewtechnologies,makingitthemostpopularmobilecommuni
