Tài liệu Error Log Processing for Accurate Failure Prediction docx

... results for online failure prediction. Figure 1: Error- based online failure prediction. The term online failure prediction subsumes techniquesthat try to forecast the occurrence of system failures ... Error Log Processing for Accurate Failure Prediction Felix SalfnerInternational Computer Science Institute, Berkeleysalfner@icsi.berkeley.eduSteffen ... TschirpkeHumboldt-Universit¨at zu Berlintschirpk@informatik.hu-berlin.deAbstract Error logs are a fruitful source of information both for di-agnosis as well as for proactive fault handling – howeverelaborate...

Tài liệu 68 Array Processing for Mobile Communications pdf

... Center for Telecom-munications and Information Systems Laboratory, Stanford University, Stanford, CA, June1994.[2] Second workshop on smart antennas in wireless mobile communications, Center for ... Speech, and Signal Processing, 37(3), 360–377,March 1989.c1999 by CRC Press LLCArrayProcessingforMobileCommunicationsA.PaulrajStanfordUniversityC.B.PapadiasStanfordUniversity68.1IntroductionandMotivation68.2VectorChannelModelPropagationLossandFading•MultipathEffects•TypicalChannels•SignalModel•Co-ChannelInterference•Signal-Plus-InterferenceModel•BlockSignalModel•SpatialandTemporalStructure68.3AlgorithmsforSTPSingle-UserST-MLandST-MMSE•Multi-UserAlgorithms•SimulationExample68.4ApplicationsofSpatialProcessingSwitchedBeamSystems•Space-TimeFiltering•ChannelReuseWithinCell68.5Summary68.6References68.1 ... IntroductionandMotivationThischapterreviewstheapplicationsofantennaarraysignalprocessingtomobilenetworks.Cellularnetworksarerapidlygrowingaroundtheworldandanumberofemergingtechnologiesareseentobecriticaltotheirimprovedeconomicsandperformance.Amongtheseistheuseofmultipleantennasandspatialsignalprocessingatthebasestation.ThistechnologyisreferredtoasSmartAntennasor,moreaccurately,asSpace-TimeProcessing(STP).STPreferstoprocessingtheantennaoutputsinbothspaceandtimetomaximizesignalquality.Acellulararchitectureisusedinanumberofmobile/portablecommunicationsapplications.Cellsizesmayrangefromlargemacrocells,whichservehighspeedmobiles,tosmallermicrocellsorverysmallpicocells,whicharedesignedforoutdoorandindoorapplications.Eachoftheseoffersdifferentchannelcharacteristicsand,therefore,posesdifferentchallengesforSTP.Likewise,differentservicedeliverygoalssuchasgradeofserviceandtypeofservice:voice,data,orvideo,alsoneedspeciﬁcSTPsolutions.STPprovidesthreeprocessingleverages.Theﬁrstisarraygain.Multipleantennascapturemoresignalenergy,whichcanbecombinedtoimprovethesignal-to-noiseratio(SNR).Nextisspatialdiversitytocombatspace-selectivefading.Finally,STPcanreduceco-channel,adjacentchannel,andinter-symbolinterference.Theorganizationofthischapterisasfollows.InSection68.2,wedescribethevectorchannelmodelforabasestationantennaarray.InSection68.3wediscussthealgorithmsforSTP.Section68.4outlinestheapplicationsofSTPincellularnetworks.Finally,weconcludewithasummaryinSection68.5.c1999byCRCPressLLC[16]...

Tài liệu Tips and Tricks for Getting Vista Certified docx

... questions for you to answer. The questions, for the most part, will be inmultiple choice format usually A,,B,,C,,D format, and sometimes ranging up to F. Here's how the question andanswer format ... update• Performance Information and ToolsCopyright ©2007 Global Knowledge Training LLC. All rights reserved.Page 7Preparing for a Boot Camp ClassIf you haven’t taken a Boot Camp before, please ... the end of 2007 or early 2008, when thefirst service pack for Windows Vista is due to bedelivered.One Month beforeA good month before you attend the MCITP BootCamp its a great idea to start...

Tài liệu Innovative Installation Techniques for Fiber Drop Terminals docx

... adapts for all mounting situations, MST installations are accomplished in less time and with reduced complexity. It also eliminates the logistics of ensuring brackets are available for each ... streamline the process of mounting MSTs for installing drop cables in any FTTP deployment.Adapting to the situationADC developed a universal mounting bracket for installing MSTs. The most obvious ... WHITE PAPERInnovative Installation Techniques for Fiber Drop TerminalsAs fiber-to-the-premises (FTTP) deployments increase, innovative methodologies are being developed to make the installer’s...

Tài liệu New grammar practice for pre-intermediate students docx

... once.about of in to afterby for on at without1 We talked about going_ (go) to France for our holiday.2 I look forward (see) you again next year.3 She's tired (work) for the company.4 I'm ... Bread, cheese, butter, information, news, food, and money are all uncountable nouns.>• Exercise 14 for some and any.PracticeWrite 'C for countable, 'U' for uncountable.applewaterboymilktablepenbreadcupcomputermoneyCUcheesetoothcargrasspersonroadchairbicyclehandflourIinformationbuttersugartreegardenbooknewsbuswinehouseReported ... to continue for another two years,until her exams.9 They're thinking of house.10 That machine? Oh, it's used for toasted sandwiches.11 They've given up meat.12 Before a teacher,...