专业英语讨论课论文

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1、题目：NoncooperativeCellularWirelesswithUnlimitedNumbersofBaseStation姓名：140104030093张曌、140104030082邱悦、140104030096蒲琼、140104030084陈春、140104030076马欢班级：通信工程四班第二组比例：张曌24%、邱悦19%、蒲琼19%、陈春19%、马欢19%1.Introductionoftheessay1.1Essay:NoncooperativeCellularWirelesswithUnlimitedNumbersofBaseStationAn

2、tennasChinesetranslation:基站端无穷天线的非协作蜂窝无线通信1.2whytochoosethisessayThisessayarewrittenbyTLMarzettawhoisfromBellLabs,anditiscitedbyotherarticlesmanytimes.Ityieldsanumberofmathematicallyexactconclusionsandpointstoadesirabledirectiontowardswhichcellularwirelesscouldevolve.Figure1Introducti

3、onoftheessay1.3backgroundoftheessayKeywords:Pilotcontamination（导频污染）,MassiveMIMOsystem（大规模输入输出系统）,Time-divisionduplex（时分复用）2.Words&ExpressionsWords&ExpressionsChinese translationscellular小区antenna天线base station 基站time-division duplex（TDD）时分复用frequency-division duplex（FDD）频分复用reverse-l

4、ink channel反向信道forward-link channel前向信道pilot导频pilot contamination导频污染channel-state information（CSI）信道估计linear precoder线性预编码fast fading快衰落log-normal shadow fading对数正态阴影衰落geometric  attention几何衰落Words&ExpressionsChinese translationsinter-cellular interference小区内干扰signal-to-interference 

5、ratio（SIR）信干比pilot sequence导频序列reuse复用throughout吞吐量capacity容量spectrum efficiency频谱利用效率energy efficiency能量利用效率conjugate-transpose共轭转置propagation matrix传播矩阵zero-mean均值为0unit-variance方差为12.Translations3.1Inthelimitofaninfinitenumberofantennasacompletemulti-cellularanalysis,whichaccountsf

6、orinter-cellularinterferenceandtheoverheadanderrorsassociatedwithchannel-stateinformation,yieldsanumberofmathematicallyexactconclusionsandpointstoadesirabledirectiontowardswhichcellularwirelesscouldevolve.分析：句子的主语为acompletemulti-cellularanalysis，谓语为yields和pointsto为并列谓语。翻译：天线数量趋于无穷，完整的

7、多小区分析解释了小区内干扰、额外的开销以及由信道估计信息引起的误差，得到了许多数学上准确的结论，并且指明了蜂窝无线通信发展令人满意得到方向。3.2Inparticulartheeffectsofuncorrelatednoiseandfastfadingvanish,throughputandthenumberofterminalsareindependentofthesizeofthecells,spectralefficiencyisindependentofbandwidth,andtherequiredtransmittedenergyperbitvani

8、shes.