单载波系统分数阶域均衡技术的分析

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1、单载波系统分数阶域均衡技术的研究ABSTRACTInthesystemofwirelessbroadbaIldcommu

2、lication，t11eInterSymbolInterference(ISI)may黟eatlya丑’ectt11ereliabilit)，oft11ecommumcationperfomaIlce．Sill91ec秭er丘℃quencydom痂equaliZation(SC-FDE)isaIle髓ctiVesolutiontoISI，thistecllIl0109)，isutilizedt0desigllaequalizationcoemcient

3、stoeliIIlinatetheinte疵rencecauSedbythech籼elandISI．C硼rentlyaVailableequalizationsaretotrallsfert11ereceiVingendoft11esi印alswmchsu疏rseriousinte疵rence舶mtimedomainto舶quenCydomain，aIldt11endesigna舶quencydomaillequalizationtoequalizet11esignal．Fromthesi印altransferpoimofⅥew，tllereceiVingendoftime

4、-domainsignalcanbeconvenedintoa仃ansfo肌domainiIlSteadoft11ef论quencydomain．andtllenthesi印a1、忻Ubeeq砌izedint11etransfonndomain．Asaresultofthe饥msfomdomajnisnexible，thereforebyselectingtllemostmatchillgchannelcharacteristicstllenaJlsfonndomaillequalizationcanacllieVebetterresultSt11anⅡ1e行equency

5、domaillequalization．Firstly，mispaperin仃oducesmedeVelopmentstatusofmeSC—FDEtechnolog)，aLswenasthestnlctureaIldcharacteristics．Andt11enintroducesmedefiIlitionalldnanlreoft11e行aCtionalfouriertransfornl．Thei皿oVationpointof“spaperis也atreplacillgthefouriertransfo肌inSC-FDE诵tllf‰tionalf．o血er订a11sf

6、onll．So2usthesi印alcaJlbeequalizedintllefractionaldomaill，t11usknowinga．boutthedefillitionandrelatednatureof丘actionalfouriertrallsfomisVe巧necessary．Andtllen，mispaperfocusesonsometecllIlologiesaboutsinglec删erequalizalionbaSedon触ctionalfo嘶ertranSfom．TheMMSEequaliZationbaSedon丘actionaJfo面ertms

7、fo肌alwaysusetheleaStsquaree玎orcriterion．Tbcalculatetlleequalizationcoemcientbyminimizingtheerror．Astheresearchexecutedin行actionaldomain，thecalculatedequalizationcoe蚯cientconta洫s仔actionalparameter．Thei11Ilovationof锄spaperistoaCmeVelowerbite订Drratet11anmefkquencydomaillequalizationbyselectio

8、ntllemostmatchillgthecharacteriSticspar锄eterThe行equencydomainequalizationcontaills1i11earaIldnoIdineareq砌ization．The哈尔滨工程大学硕士学位论文decisionfeedbackequalization，w11ichisanoIllinearequalization，isworkedasfeedingbackt11e劬e—domainsigllaldecidedinthepriorslot．And胁her