E1上無差錯(cuò)傳輸設(shè)備的軟件設(shè)計(jì).pdf

1、南京郵電大學(xué)碩士學(xué)位論文E1上無差錯(cuò)傳輸設(shè)備的軟件設(shè)計(jì)姓名：周小會(huì)申請學(xué)位級別：碩士專業(yè)：通信與信息系統(tǒng)指導(dǎo)教師：傅永根20090301南京郵電大學(xué)碩士研究生學(xué)位論文AbstractAbstractAtearlyspringof2008，theabnormalheavyfrostdisruptedsouthChina’Spowerandcommunicationsysteminlarge—areasLatertheWenChuanear

2、thquakeseriouslydamagedthecommunicationsinquakehitregionsalsoAdemandisquicklyontheagenda：Howtoensurethereliabilityandqualityofthecommunicationsinsomeimportantapplications，suchascommandsystem，emergencycenterelectricpowerc

3、ontrolsystemandSOonTheE1errorfreetransmissionsystem(EFTS)isthenaneffectivemeanstesolvethisproblemThepaper’SmissionistodesignafeasibleschemeofErrorFreeTransmissionDevice(EFTD)，whichconsistoftheEFTSIntransmitterpartoftheEF

4、TDtheElsignalisduplicatedandtransmittedthroughtworoutes，meanwhileinreceiverthetwosignals、)I，itlldifferentdelaysarethenalignedandke印mutualcoherenceThesetwosignalsareerrorcheckedandcompared；thebetteroneisthenchosenandoutpu

5、ttedItensuresthatEFTScantransmitcorrectlyevenifoneofthemisinfailureThemissionincludestwoparts：HardwareandsoftwaredesignMytaskisthesoftwarepartincludingdesigningequipmentworkflowimplementingsysteminitializationandconfigur

6、ationprogram，E1portsignalperformancetestingprogram，alarmdetectionprogramandfavorable—basedreceivingprogramThepaperfirstprovidesanoverviewofthedesignedsystem，introducesthetotalframeworkandfunctionmodulesFollowedtheseitint

7、roducessimplysomerelatedtechnicalstandards，hardwarestructureandmainchipsthataresoRwarcdesignrelatedNextitintroducesworkflowdesignoftheEFTDandfocusesonthereceiverparttosolvingthetwosignalsoptimizedselectionFollowingthese，

8、thepapergivesthemodulesprogramingincludingsysteminitializationconfigurationalarmprocessing，biterrormonitoringandbeterstreamselectionLastlyitgivesageneralsummaryE1circuitisthebasicelementbetweenswitchingcentersThedesignof

9、E1errorfreetransmissionsystempresentedinthispaperispracticableandfeasible，whichisvaluabletothedevelopmentofEFTDKeywords：ErrorFreeTransmissionSystemonE1，E1Signal，StreamAlignmentTransmissionWimRedundancyRoute，ErrorCodeDete