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外文翻译--空白频段标志着无线界.doc

HTTP//WWWEETASIACOM/WHITESPACESMARKEDOFFASWIRELESSARENAPOSTED16OCT2008WHENTHELONGAWAITEDDTVSWITCHOVERINTHEUNITEDSTATESOCCURSNEXTFEBRUARY,BROADCASTERSWILLRELINQUISHTHEANALOGCHANNELSSOMEHAVEHELDFORMORETHANHALFACENTURYCONSIDERINGTHEPRICESMOBILEOPERATORSPAIDFORBEACHFRONTSPECTRUMABOVE700MHZEARLIERTHISYEAR,THESEUNLICENSEDVHF/UHFCHANNELSKNOWNASWHITESPACESANDSCATTEREDTHROUGHOUTTHE54MHZTO698MHZREGIONOFTHERFSPECTRUMWOULDEASILYHAVEPULLEDINBILLIONSHADTHEYBEENAUCTIONEDBUTTHEYWERENTANDARANGEWARISRAGINGOVERHOWTHEYSHOULDBEUSEDTHEFIRSTSQUATTERSINTHENEWLYUNLICENSEDCHANNELSWILLLIKELYBEAHANDFULOFTECHGIANTS,INCLUDINGGOOGLE,HEWLETTPACKARD,MICROSOFTANDMOTOROLA,WHICHHAVEJOINEDWITHPUBLICINTERESTGROUPSANDMEDIACOMPANIESTOCREATETHEWIRELESSINNOVATIONALLIANCEWIASEVERALRFCOMPANIESWITHLINKSTOWIAMEMBERSARETESTINGPROTOTYPEPRODUCTSKNOWNASWHITESPACESDEVICESWSDSWITHTHEUSFEDERALCOMMUNICATIONSCOMMISSIONFCCSUPERIORUHFPROPAGATIONTRANSMISSIONSFROMTHESEWSDSWOULDENJOYUHFPROPAGATIONCHARACTERISTICSFARSUPERIORTOTHOSEOFTHENOWOVERCROWDED24GHZBANDAPPLICATIONSRANGEFROMADATANETWORKTHATGOOGLESLARRYPAGEHASDESCRIBEDASWIFIONSTEROIDSTOALLSORTSOFVIDEO,TONETWORKSOFHUMBLEHOUSEHOLDOBJECTSLIKEWASHINGMACHINES,TOASTERSANDLIGHTBULBS,ALLCOMMUNICATINGWITHONEANOTHERTHEBRAVENEWWIRELESSWORLDENVISIONEDBYTHEWIACOULDPOSSIBLYDISRUPTTHEAIRWAVESWITHINTERFERENCEANDUNDOUBTEDLYWILLUPSETTHEBROADCASTERSVHF/UHFMONOPOLYTHEBROADCASTERSARELIVID,DESCRIBINGTHEPLANASUNWORKABLEANDALTHOUGHNEITHERSIDEISSAYINGSO,ITISNOTDIFFICULTTOTRANSLATEBROADBANDINTOVIDEOANDUNLICENSEDINTODOLLARSTHEFCCHASJUSTCONCLUDEDITSFIELDTESTINGOFWSDSUBMITTEDBYMOTOROLA,PHILIPS,ADAPTRUM,SHAREDSPECTRUM,ANDSINGAPORESINSTITUTEFORINFOCOMMRESEARCHTHETESTRESULTSWILLALMOSTCERTAINLYSTARTANOTHERROUNDOFVITUPERATIONBETWEENTHETECHSANDTHEBROADCASTERSTHEREISQUITEABITOFWHITESPACEOUTTHERE,PARTICULARLYINRURALAREASOFTHEUS,ACCORDINGTOTHENEWFRONTIERSFOUNDATION,AMEMBEROFWIABUTTHECONTESTEDTURFISINLARGEMEDIAMARKETSWHERETHEBROADCASTERSRAKEINMOSTOFTHEIRPROFITSNEWFRONTIERS,WHICHBELIEVESTHESOCIALLYPROACTIVEUSEOFWHITESPACESCANHELPCLOSETHEDIGITALDIVIDE,HASESTIMATEDTHEPERCENTAGEOFUNUSEDSPECTRUMVARIESFROM18PERCENTINNEWYORKTOMORETHAN60PERCENTINLESSDENSELYPOPULATEDAREAS,SUCHASWICHITA,KANSASTHESEFIGURESARECONTESTEDBYTHEBROADCASTLOBBY,LEDBYMAXIMUMSERVICETVMSTV,WHICHDESCRIBESITSELFASTHEENGINEERINGARMOFTHENATIONALASSOCIATIONOFBROADCASTERSDAVIDLDONOVAN,PRESIDENTOFMSTV,ARGUESTHATYOUCANTJUSTADDUPTHEDTVCHANNELSTHATARENOTLICENSEDINAGEOGRAPHICAREA,BECAUSEHIGHPOWERTVSIGNALSCANTRAVELMANYMILESBEYONDTHEIRLICENSEDREGIONMOREIMPORTANT,HESAID,ISTHEPRESENCEOFLOWPOWERDEVICESLICENSEDTOOPERATEINTHEVHF/UHFBANDSWIRELESSMICROPHONESSUCHASTHOSEUSEDBYSPORTSCASTERSWHOINTERVIEWCOACHESANDPLAYERSONTHESIDELINESOFSPORTINGEVENTSCANBELICENSEDTOOPERATELEGALLYINTHEVHF/UHFBANDSALTHOUGHMANYMOREOPERATEUNLICENSEDBECAUSEWIRELESSMICROPHONESAREMOBILEANDTRANSMITATMUCHLOWERPOWERTHANDTVSTATIONS,THEYREPRESENTATOUGHERINTERFERENCEPROBLEMFORWSDSWIAISNOTTOBEDETERREDNOTINGTHATMAXIMUMWSDPOWERTRANSMISSIONHASBEENLIMITEDTO100MW,WIACONSULTANTEDMUNDTHOMASISCONFIDENTTHEINTERFERENCEPROBLEMCANBESOLVEDBYDEPLOYINGTHERIGHTSETOFTECHNOLOGIESATFIRSTGLANCE,MOSTRFENGINEERSMIGHTTHINKITUNDULYCAUTIOUSTOFEARTHATLOWPOWERBELOW100MWUSEOFPARTOFANUNOCCUPIED6MHZCHANNELCOULDCAUSEPROBLEMSFORDTV,EVENWITHTHELONGERRANGEOFUHFSIGNALSRFENGINEERSHAVEBEENSOLVINGINTERFERENCEPROBLEMSFORYEARS,NOTABLYTHEWIFI/BLUETOOTHCONTENTIONINTHE24GHZBANDBUTTHEWIAHASSETITSCOUNTERINTERFERENCEBARHIGHTWOTECHNOLOGIESANDPOSSIBLYATHIRDWOULDBEEMPLOYEDGLOBALPOSITIONINGSYSTEMS,COGNITIVERADIOANDBEACONSTOGUARDAGAINSTINTERFERENCEWITHWIRELESSMIKES,SOMEWIAPROTOTYPESINCLUDEBEACONTECHNOLOGYWHENABROADCASTERSETSUPATASPORTINGEVENT,FOREXAMPLE,ITSTECHNICALTEAMWILLDEPLOYABEACONTHATWILLBROADCASTATAPOWERTHEWHITESPACESDEVICESCANEASILYSENSEINCUMBENTSINTHEVHF/UHFSPACE,WHICHINCLUDEBROADCASTERSANDWIRELESSMICROPHONEINTERESTSLEDBYUSMANUFACTURERSHUREINC,HAVELAUNCHEDASPIRITEDVERBALATTACKONWSDSINFECTIONANALOGYMSTVANDAGROUPOFSTATIONSASKEDTHEFCCWHYITWOULDCONSIDERALLOWINGMILLIONSANDMILLIONSOFTHESEINTERFERENCECAUSINGDEVICES,LIKEGERMS,TOSPREADTHROUGHOUTAMERICAWITHTHEABILITYTOATTACKTHETVRECEIVERSINPEOPLESHOMES,APARTMENTS,HOTELROOMS,HOSPITALROOMS,DORMITORIES,ETC,WITHNOWAYFORTHEOWNEROFTHETVSETTHEVICTIMTODETERMINEWHOWASCAUSINGTHEILLNESSTOHISORHERTVSETTHATSORTOFRHETORICMIGHTNOTIMPRESSENGINEERS,BUTITHASINDUCEDNOFEWERTHAN70MEMBERSOFCONGRESSTOSIGNASTATEMENTEXPRESSINGDEEPCONCERNABOUTTHEUSEOFWHITESPACESFORPERSONALWIRELESSDEVICESITSNOTTHATTHEREISNTCAUSEFORCONCERNTHEMOSTOFTENNOTEDTECHNOLOGYTRAPISTHESOCALLEDHIDDENNODEPROBLEMESSENTIALLY,ITISQUITEPOSSIBLEFORAWSDTOBEINAPOSITIONWHEREITCANNOTSENSEADTVSIGNALWHILEANEARBYTVINANADJACENTAPARTMENT,FOREXAMPLEISRECEIVINGTHESIGNALTHISISMOSTLIKELYINAREASDENSEWITHLARGECONCRETEANDSTEELSTRUCTURESAWIRELESSTECHNOLOGYDEPLOYMENTWITHASLARGEAMARKETANDPOTENTIALPUBLICIMPACTASWSDSWOULDTYPICALLYATTRACTALOTOFATTENTIONFROMTHEIEEEINTHEPOLITICALWRANGLEOVERWHITESPACES,HOWEVER,ITSEEMSASTHOUGHNOTHINGISTYPICALEXCLUDINGMOBILETHEIEEEDOES,INFACT,HAVEAWORKINGGROUPIEEEP80222TASKEDWITHDEVELOPINGADETAILEDRADI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