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ID:36813105
大小:2.30 MB
页数:72页
时间:2019-05-15
《超宽带无线通信对公用通信系统干扰的研究》由会员上传分享,免费在线阅读,更多相关内容在学术论文-天天文库。
1、摘要摘要超宽带(ultrawideband-UWB)无线通信是一种新兴的短距离无线通信技术,国内外都非常重视。它具有抗干扰性能强、传输速率高、功耗低、带宽极宽、保密性好以及成本低廉等优点,尤其适用于多径环境中的短距离无线通信,有望成为下一代高速无线局域网的主流技术之一。近年来,将超宽带技术用于无线移动通信成为研究的热点。但是,要构成高效的UWB通信系统,仍然有许多工作要傲。为保证现有无线系统的通信质量,又能更好地广泛应用UWB技术,必须首要解决超宽带(UWB)信号对现有通信系统的干扰问题。论文主要研究超宽带对公众通信系统共存时,UWB信号对通信系统性能的影响。首先介绍
2、了UWB的历史发展和研究现状;接着研究了UWB通信系统的特点和标准;然后结合UWB信号的设计,研究了UWB通信系统的信道模型、参数分布及调制方式;最后分析了UWB系统对我国主要公众通信业务的干扰问题,并完成了相关仿真,从理论上得出了UWB系统对公众通信系统性能的影响情况。最后,谈了本课题主要完成的研究工作和存在的问题以及U、ⅣB技术未来的发展情况。关键词:超宽带信道模型干扰仿真公众通信Abst;'actAbstractUWBcommunicationisanovelshort-distancewirelesscommunicationleehniqueinrecent
3、years.Asanewtechnologyforshort-distancewirelesscommunications,ultrawidebandfUWB)hasbecomeoneofthefocusesofresearchhomeandabroad.IthasmanyadvantagestobecomeoneofmaintechnologiesofnextgenerationalPAN;suchasstronganti-interfere,highdatarate,lowpowerconsumption,ultrawideband.goodsecrecy,low
4、costctc。Additionally,UWBisaviablecandidateforshortrangecommunicationsindensemulti-pathenvironment.Butultra-wideband1[cchnologyisahottopicintheresearchfieldofwirelessmobilecommunicationduringthelastfewyears.However,inordertoconstructanericctiveUWBcommunicationsystem,thereisstillmuchworkt
5、odo.InterferencebvUWBsignalsintopuniccommunicationsystemsisakeyquestioninordertoguaranteethecommunicationqualityofotherwirelesssystemsandpopularizeUWBtechnology.neperformanceofpubliccommunicationsystemcoexistingwithUWBandmethodsofinterferencemitigationbyUWBalemainlystudiedinthispaper.Fi
6、rstly,UWB’Shistoryanddevelopmentstatusisintroduced,severalkindsofimplementprojectsoftheUWBcommunicationssystemsarediscussedimmediatelyafteritsfunctioniScarriedonanalysis.Then,analyzedchannelmodel,modulationanddistributionparameters.neinterferenceofUWBcommunicationssystemstothepubliccomm
7、tmicationservicesaletheoreticallyanalyzedandsimulated.nlelastPartofthisdissertationmakeaconclusionofthetasksfinisheduntilnOWandputsforwardtheexistentialproblemsforthepurposeofthepromisingprospectforfilrtberstudyonthistopic.Keywords:IrWBChannelmodelInterferenceSimulationPubiieco
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