通信測距復(fù)合系統(tǒng)盲均衡技術(shù)研究.pdf

1、Y1437677分類號：——UDC：——密級：編號：工學(xué)碩士學(xué)位論文通信測距復(fù)合系統(tǒng)盲均衡技術(shù)研究碩士研究生：指導(dǎo)教師：學(xué)位級別：學(xué)科、專業(yè)：所在單位：論文提交日期：論文答辯日期：學(xué)位授予單位：葉桂林郭黎利教授工學(xué)碩士通信與信息系統(tǒng)信息與通信工程學(xué)院2008年1月2008年1月哈爾濱工程大學(xué)哈爾濱丁程大學(xué)碩學(xué)位論文ABSTRACTTheSpreadSpectrumtechnologyhasgotwideusageuponcommunic

2、ationtelemetryorientationandradarsystemsinceitoffersmanyadvantagesincludingantiinterference，anti—eavesdropping，strongdiscriminationmultipleaccessanti—fadingandSOonThecomplexsystemhasthefunctionofcommunicationandtelemetry

3、simultaneouslybecausetheDS／SShastheabilityofstrongdiscriminationandrangingInthecomplexsystem，theintersymbolinterferenceisinvolvedbecameofthemultipatheffectChannelequalizationtechniqueisaneffectivewaytocombatISIInthetradi

4、tionalequalization，trainingsequencemustbesenttotracktheavailableofchannelButblindequalizationCaneffectivelyincreaseboththecommunicationspeedandreliabilitywithouttheaidofanytrainingsequenceThethesisinvestigatestheapplicat

5、ionofblindequalizationtechniqueinthecomplexsystemtoimprovethecapabilityofthesystemBasedontheintroductionofmultiplexsystem，severaltypicalequalizationalgorithmsarestudiedinthepaperThepropertiesoftheseequalizersarecomparedf

6、romtheseaspects：theconvergenceofalgorithms，MSE，theabilityoftrackingvariationchannelandtheabilityofantiinterferenceFurthermore，adualmodeblindequalizerbasedonDFEisinvestigatedandappliedinthecomplexsystem；theproposedalgorit

7、hmCanovercomethesignalphaserotationcausedbyDopplerShiftonthebaseofquickconvergenceMeanwhile，itCallkeeptheerrorinarobuststateandhavestrongabilityoftrackingchannelThesimulationresultprovesthattheequalizationtechniqueCanrem