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1、TheCompleteWirelessCommunicationsProfessional:AGuideforEngineersandManagersTheCompleteWirelessCommunicationsProfessional:AGuideforEngineersandManagersWilliamWebbArtechHouseBoston?LondonLibraryofCongressCataloging-in-PublicationDataWebb,William,1967–Thecompletew

2、irelesscommunicationsprofessional:aguideforengineersandmanagers/WilliamWebbp.cm.—(ArtechHousemobilecommunicationslibrary)Includesbibliographicalreferencesandindex.ISBN0-89006-338-9(alk.paper)1.Wirelesscommunicationsystems.2.Mobilecommunicationsystems.I.Title.II

3、.Series.TK5103.2.W421999621.6845—dc2198-51802CIPBritishLibraryCataloguinginPublicationDataWebb,William,1967–Thecompletewirelesscommunicationsprofessional:aguideforengineersandmanagers—(ArtechHousemobilecommunicationslibrary)1.Wirelesscommunicationsystems.I.Titl

4、e621.3’82ISBN0-89006-338-9CoverdesignbyLyndaFishbourne?1999ARTECHHOUSE,INC.685CantonStreetNorwood,MA02062Allrightsreserved.PrintedandboundintheUnitedStatesofAmerica.Nopartofthisbookmaybereproducedorutilizedinanyformorbyanymeans,electronicormechanical,includingp

5、hotocopying,recording,orbyanyinformationstorageandretrievalsystem,withoutpermissioninwritingfromthepublisher.Alltermsmentionedinthisbookthatareknowntobetrademarksorservicemarkshavebeenappropriatelycapitalized.ArtechHousecannotattesttotheaccu-racyofthisinformati

6、on.Useofaterminthisbookshouldnotberegardedasaffectingthevalidityofanytrademarkorservicemark.InternationalStandardBookNumber:0-89006-338-9LibraryofCongressCatalogCardNumber:98-5180210987654321ContentsPrefaceWhatisacompletewirelessprofessional?xiiiIntroductionxii

7、iFormatofthisbookxivAcknowledgmentsxvPartIIntroductorymaterial11Someinterestinghistory31.1Introduction31.2Earlyhistory41.3Somekeymilestonesinmobileradiohistory81.4Recenthistory10References16PartIIMobileradiosystems172Thebasicsofmobileradio192.1Introduction19vvi

8、TheCompleteWirelessCommunicationsProfessional2.2Basicprinciplesofpropagation202.3Radiospectrumutilization322.4Basicsystemdesign372.4.1Systemoverview372.4.2Voiceencoding372.4