基站端无穷天线的非协作蜂窝无线通信-外文翻译

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1、题目：NoncooperativeCellularWirelesswithUnlimitedNumbersofBaseStation1.Introductionoftheessay1.1Essay:NoncooperativeCellularWirelesswithUnlimitedNumbersofBaseStationAntennasChinesetranslation:基站端无穷天线的非协作蜂窝无线通信1.2whytochoosethisessayThisessayarewrittenbyTLMarzettawhoisfromBellLabs,anditiscitedbyothera

2、rticlesmanytimes.Ityieldsanumberofmathematicallyexactconclusionsandpointstoadesirabledirectiontowardswhichcellularwirelesscouldevolve.Figure1Introductionoftheessay1.3backgroundoftheessayKeywords:Pilotcontamination（导频污染）,MassiveMIMOsystem（大规模输入输出系统）,Time-divisionduplex（时分复用）2.Words&ExpressionsWords

3、&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-link 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 fadin

4、g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 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-v

5、ariance方差为12.Translations3.1Inthelimitofaninfinitenumberofantennasacompletemulti-cellularanalysis,whichaccountsforinter-cellularinterferenceandtheoverheadanderrorsassociatedwithchannel-stateinformation,yieldsanumberofmathematicallyexactconclusionsandpointstoadesirabledirectiontowardswhichcellularw

6、irelesscouldevolve.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,throughputandthenumberofterminalsareindependentofthesizeofthecell

7、s,spectralefficiencyisindependentofbandwidth,andtherequiredtransmittedenergyperbitvanishes.分析：“areindependentof”本义为“不独立于”，这里可以翻译为“与...无关”翻译：尤其是，不相关噪声和快衰落的影响消失，吞吐量和终端数量与小区的规模无关，频谱利用效率与带宽无关，并且消除了每比特最小传输能量要求。Theonly