基于FPGA的盲均衡器的設計.pdf

1、西北工業(yè)大學碩士學位論文基于FPGA的盲均衡器的設計姓名：張益萍申請學位級別：碩士專業(yè)：電路與系統(tǒng)指導教師：于海勛20040201西北工業(yè)人學碩士學位論文:基于FPGA的盲均衡冊的設計AbstractInmobilecommunicationandhighspeedwirelessdigitalcommunicationmultipaththefinityofchannelbandwidthandfaultinessofthechann

2、elleadtothebringingofintersymbolinterference(ISI)whendatatransfer.Thisisanimportantfactorthatdegradestheperformanceofcommunication.HoweverchannelequalizationtechniquecaneliminatetheISIandnoiseItcanalsoreducesthebiterrorr

3、atio.ThistechniquedevelopedfromfixedequalizationandautoequalizationtoadaptiveequalizationConventionaladaptiveequalizergenerallyneedsthetransmissionofatrainingsequenceknownatthereceivertomakeequalizerlearnthecharacteristi

4、cofthechannelbutthismethodbringstothetransferdelaybecauseoftheinsertingoftrainingsequencedecreasesthetransmissionrateofusefulsymbolsandincreasesthesystemcomplexity.Inadditionsometimesitisimpossibletotransmittrainingseque

5、nce.Howeverblindequalizationtechniquecandependononlythereceiveddatasequencetoequalizethechannels.Soitiswidelyresearched.ForBussgangcategoryblindequalizationalgorithmitsquantityofcalculateissmallandconvenienttorealtimeimp

6、lementandbetterperformance.Sothisarticleusesthiscategoryalgorithmtoimplementtheblindequalizer.WithdevelopoftheElectronicDesignAutomatictheintegrationoffieldprogrammablegatearrayisgreatlyimprovedanditiswidelyused.SoFPGAis

7、thefirstchoicetoimplementtheblindequalizer.Thisarticleadoptsthedesignmethodoftopdowninotherwordcuttingtheentiredesignintosmallmodulefromtoptodownanddesigningseparatelyintheendcompletestheentiredesign.Keywords:Adaptiveequ