通信工程专业外语 unit13原文与翻译
通信工程专业英语
一、汉译英1、时分多址:TDMA (Time Division Multiple Address/ Time Division Multiple Access)2、通用无线分组业务:GPRSGeneral Packet Radio Service3、国际电报电话咨询委员会:CCITT4、同步数字体系:SDH Synchronous Digital Hierarchy (同步数字序列)5、跳频扩频:FHSS frequency hopping spread spectrum6、同步转移模块:STM synchronous transfer module7、综合业务数字网:ISDNIntegrated Services Digital Network8、城域网:MAN Metropolitan Area Network9、传输控制协议/互联网协议:TCP/IPTransmission Control Protocol/Internet Protocol10、服务质量:QOS Quality of Service11、中继线:trunk line12、传输速率:transmission rate13、网络管理:network management14、帧结构:frame structure15、移动手机:Mobile Phone 手机 Handset16、蜂窝交换机:(Cellular switches)(电池开关cell switch)(cell 蜂房)17、天线:Antenna18、微处理器:microprocessor19、国际漫游:International roaming20、短消息:short message21、信噪比:SNR(Signal to Noise Ratio)22、数字通信:Digital communication23、系统容量:system capacity24、蜂窝网:cell network(cellular network)(Honeycomb nets)25、越区切换:Handover26、互联网:internet27、调制解调器:modem28、频谱:spectrum29、鼠标:Mouse30、电子邮件:electronic mail E-mail31、子网:subnet32、软件无线电:software defined radios33、网络资源:network resources 二、英译汉1、mobile communication:移动通信2、Computer user:计算机用户3、Frame format:帧格式4、WLAN:wireless local area network 无线局域网络5、Communication protocol:通信协议6、Transmission quality:传输质量7、Remote terminal:远程终端8、International standard:国际标准9、GSM:全球移动通信系统Global System for Mobile Communications10、CDMA:码分多址Code Division Multiple Access11、ITU:国际电信联盟International Telecommunication Union12、PCM:pulse code modulation 脉冲编码调制13、WDM:波分复用Wavelength Division Multiplex14、FCC:联邦通信委员会Federal communications commission15、PSTN:公用电话交换网Public Switched Telephone Network16、NNI:网络节点借口Network Node Interface17、WWW:万维网World Wide Web18、VOD:视频点播Video-On-Demand19、VLR:访问位置寄存器Visitor Location Register20、MSC:移动交换中心Mobile Switching Centre21、HLR:原籍位置寄存器Home Location Register22、VLSI:超大规模集成电路Very Large Scale Integrated Circuits23、Bluetooth technology:蓝牙技术24、Matched filter:匹配滤波器25、ADSL:非对称数字用户环路Asymmetrical Digital Subscriber Loop非对称数字用户线路(Asymmetric Digital Subscriber Line)26、GPS:全球定位系统Global Position System27、ATM:异步传输模式Asynchronous Transfer Mode三、汉译英1、脉冲编码调制(PCM)依赖于三个独立的操作:抽样、量化和编码。
通信工程 专业英语翻译
Fiber to the Home(光纤到家)光纤到家(FTTH)是一个住宅的通信基础设施,光纤电缆运行所有的方式向用户。
经过多年的期待,各种部署光纤到户是最后出现在美国各地的社区虽然光纤到户是一种技术,它为本地接入市场的竞争动态有趣的影响。
光纤到户网络可以提供的带宽比目前现有的宽带技术的许多倍。
今天似乎每个人都想要的高速数据,可靠的语音服务,高质量的视频。
无论这些服务是由数字用户线(DSL)交付,电缆调制解调器或无线架构是微不足道的,只要服务是快速和可靠的。
FTTH使运营商能够提供多种通信和娱乐服务,包括高速互联网接入,广播,有线电视,直播卫星(DBS)电视,互动的双向视频服务。
此外,一个FTTH解决方案基于波分复用(WDM),允许更多的灵活性和适应性,进一步支持服务。
进一步支持服务的适应性。
在FTTH系统,在前端设备或是连接到公共交换电话网络(PSTN)唱DS-1和连接到ATM、以太网接口。
视频服务从有线电视(CATV)进入系统的头端或来至卫星饲料。
所有这些信号,然后合并成采用WDM技术单光纤传输通过无源光分路器的最终用户。
分路器通常放在离中心局(CO)约3000英尺。
分流比的范围可以从2到32的用户并没有在网络中使用任何活性成分。
然后将信号送到3个000英尺的家在一个单一的纤维。
一个理想的FTTH系统必须提供的所有服务用户的能力支付,如电路交换电话,视频服务、高速数据广播。
在家里,光信号转换成电信号的光电转换器(OEC)。
OEC把信号分成由最终用户所需的服务。
理想情况下,其将有标准的用户界面,提供所需的服务不集LLD盒。
这些接口包括电话RJ11插孔,RJ45接口的高速数据,和75欧姆同轴电缆端口的有线电视和卫星直播业务。
有关联的FTTH的几个优点,如下:这是一个被动网络,因此从有限无活性成分对最终用户这大大减少网络维护的成本和需求以及消除直流电源网络的需要。
它是一个单一的光纤到终端用户,提供各种服务与行业标准的用户界面,包括语音,高速数据,模拟或数字有线电视,星展,ANL视频。
通信工程专业英语汉英对照
通信工程专业英语汉英对照(A-D)2008年11月14日星期五 21:08A安全地线=safe ground wire安全特性 security feature安装线=hook-up wire按半周进行的多周期控制=multicycle controlled by half-cycle 按键电话机=push-button telephone set按需分配多地址=demand assignment multiple access(DAMA)按要求的电信业务=demand telecommunication service按组编码=encode by groupB八木天线=Yagi antenna白噪声=white Gaussian noise白噪声发生器=white noise generator半波偶极子=halfwave dipole半导体存储器=semiconductor memory半导体集成电路=semiconductor integrated circuit半双工操作=semi-duplex operation半字节=Nib包络负反馈=peak envelop negative feed-back包络延时失真=envelop delay distortion薄膜=thin film薄膜混合集成电路=thin film hybrid integrated circuit保护比(射频)=protection ratio (RF)保护时段=guard period保密通信=secure communication报头=header报文分组 packet报文优先等级=message priority报讯=alarm备用工作方式 spare mode背景躁声 background noise倍频 frequency multiplication倍频程 actave倍频程滤波器 octave filter被呼地址修改通知 called address modified notification被呼用户优先 priority for called subscriber本地PLMN local PLMN本地交换机 local exchange本地移动用户身份 local mobile station identity ( LMSI)本地震荡器 local oscillator比功率(功率密度) specific power比特 bit比特并行 bit parallel比特号码 bit number (BN)比特流 bit stream比特率 bit rate比特误码率 bit error rate比特序列独立性 bit sequence independence必要带宽 necessary bandwidth闭环电压增益 closed loop voltage gain闭环控制 closed loop control闭路电压 closed circuit voltage边瓣抑制 side lobe suppression边带 sideband边带非线性串扰 sideband non-linear crosstalk边带线性串扰 sideband linear crosstalk边带抑制度 sideband suppression边角辐射 boundary radiation编号制度 numbering plan编解码器 codec编码 encode编码律 encoding law编码器 encoder编码器输出 encoder output编码器总工作时间 encoder overall operate time编码效率 coding efficiency编码信号 coded signal编码约束长度 encoding constraint length编码增益 coding gain编译程序 compiler鞭状天线 whip antenna变频器 converter变频损耗 converter conversion loss变容二极管 variable capacitance diode变形交替传号反转 modified alternate mark inversion便携电台 portable station便携设备 portable equipment便携式载体设备 portable vehicle equipment标称调整率(标称塞入率) nominal justification rate (nominal stuffing rate)标称值 nominal value标称呼通概率 nominal calling probability标准码实验信号 standard code test signal (SCTS)标准模拟天线 standard artificial antenna标准频率 standard frequency标准时间信号发射 standard-time-signal emission标准实验调制 standard test modulation标准输出功率 standard power output标准输入信号 standard input signal标准输入信号电平 standard input-signal level标准输入信号频率 standard input-signal frequency标准信躁比 standard signal to noise表面安装 surface mounting表示层 presentation layer并串变换器 parallel-serial converter (serializer)并馈垂直天线 shunt-fed vertical antenna并行传输 parallel transmission并行终端 parallel terminal拨号错误概率 dialing mistake probability拨号后延迟 post-dialing delay拨号交换机 dial exchange拨号线路 dial-up line拨号音 dialing tone拨号终端 dial-up terminal波动强度(在给定方向上的) cymomotive force (c. m. f)波段覆盖 wave coverage波峰焊 wave soldering波特 baud泊送过程 Poisson process补充业务 supplementary service (of GSM)补充业务登记 supplementary service registration补充业务询问 supplementary service interrogation补充业务互连 supplementary service interworking捕捉区(一个地面接收台) capture area (of a terrestrial receiving station) 捕捉带 pull-in range捕捉带宽 pull-in banwidth捕捉时间 pull-in time不连续发送 discontinuous transmission (DTX)不连续干扰 discontinuous interference不连续接收 discontinuous reception (DRX)不确定度 uncertainty步谈机 portable mobile stationC采样定理 sampling theorem采样频率 sampling frequency采样周期 sampling period参考边带功率 reference side band power参考差错率 reference error ratio参考当量 reference equivalent参考点 reference point参考结构 reference configuration参考可用场强 reference usable fiend-strength参考灵敏度 reference sensibility参考频率 reference frequency参考时钟 reference clock参考输出功率 reference output power残余边带调制 vestigial sideband modulation残余边带发射 vestigial-sideband emission操作维护中心 operation maintenance center (OMC)操作系统 operation system (OS)侧音消耗 sidetone loss层2转发 layer 2 relay (L2R)插入组装 through hole pachnology插入损耗 insertion loss查号台 information desk差错控制编码 error control coding差错漏检率 residual error rate差分脉冲编码调制(差分脉码调制) differential pulse code modulation (DPCM)差分四相相移键控 differential quadrature phase keying (DQPSK)差分相移键控 differential phase keying (DPSK)差模电压,平衡电压 differential mode voltage, symmetrical voltage 差拍干扰 beat jamming差频失真 difference frequency distortion长期抖动指示器 long-term flicker indicator长期频率稳定度 long-term frequency stability场强灵敏度 field intensity sensibility场效应晶体管 field effect transistor (FET)超长波通信 myriametric wave communication超地平对流层传播 transhorizon tropospheric超地平无线接力系统 transhorizon radio-relay system超高帧 hyperframe超帧 superframe超大规模集成电路 very-large scale integrated circuit (VLSI)超再生接收机 super-regenerator receiver车载电台 vehicle station撤消 withdrawal成对不等性码(交替码、交变码)paired-disparity code (alternative code, alternating code)承载业务 bearer service城市交通管制系统 urban traffic control system程序设计技术 programming technique程序设计环境 programming environment程序优化 program optimization程序指令 program command充电 charge充电率 charge rate充电效率 charge efficiency充电终止电压 end-of charge voltage抽样 sampling抽样率 sample rate初级分布线路 primary distribution link初始化 initialization处理增益 processing gain传播时延 propagation delay传播系数 propagation coefficient传导干扰 conducted interference传导杂散发射 conducted spurious emission传递函数 transfer function传递时间 transfer time传声器 microphone传输保密 transmission security传输层协议 transport layer protocol传输集群 transmission trunking传输结束字符 end of transmission character传输媒体 transmission medium传输损耗 transmission loss传输损耗(无线线路的) transmission loss (of a radio link)传输通道 transmission path传输信道 transmission channel传真 facsimile, FAX船舶地球站 ship earth station船舶电台 ship station船舶移动业务 ship movement service船上通信电台 on-board communication station ,ship communication station 船用收音机 ship radio串并变换机 serial to parallel (deserializer)串并行变换 serial-parallel conversion串话 crosstalk垂直方向性图 vertical directivity pattern唇式传声器 lip microphone磁屏蔽 magnetic shielding次级分布线路 secondary distribution link猝发差错 burst error猝发点火控制 burst firing control存储程序控制交换机 stored program controlled switching systemD大规模集成电路 large scale integrated circuit (LSI)大信号信躁比 signal-to-noise ratio of strong signal带成功结果的常规操作 normal operation with successful outcome带宽 bandwidth带内导频单边带 pilot tone-in-band single sideband带内谐波 in-band harmonic带内信令 in-band signalling带内躁声 in-band noise带通滤波器 band-pass filter带外发射 out-of-band emission带外功率 out-of-band power带外衰减 attenuation outside a channel带外信令 out-band signalling带状线 stripline单边带发射 single sideband (SSB) emission单边带发射机 single side-band (SSB) transmitter单边带调制 single side band modulation单边带解调 single side band demodulation单边带信号发生器 single side band signal generaltor单端同步 single-ended synchronization单工、双半工 simplex, halfduplex单工操作 simplex operation单工无线电话机 simplex radio telephone单呼 single call单频双工 single frequency duplex单频信令 single frequency signalling单相对称控制 symmetrical control (single phase)单相非对称控制 asymmetrical control (single phase)单向 one-way单向的 unidirectional单向控制 unidirectional control单信道地面和机载无线电分系统 SINCGARS单信道无绳电话机 single channel cordless telephone单信号方法 single-signal method单音 tone单音脉冲 tone pulse单音脉冲持续时间 tone pulse duration单音脉冲的单音频率 tone frequency of tone pulse单音脉冲上升时间 tone pulse rise time单音脉冲下降时间 tone pulse decay time单音制 individual tone system单元电缆段(中继段) elementary cable section (repeater section)单元再生段 elementary regenerator section (regenerator section)单元增音段,单元中继段 elementary repeater section当被呼移动用户不回答时的呼叫转移 call forwarding on no reply (CFNRy) 当被呼移动用户忙时的呼叫转 calling forwarding on mobile subscriber busy (CFB)当漫游到原籍PLMN国家以外时禁止所有入呼 barring of incoming calls when roaming outside the home PLMN country (BIC-Roam)当前服务的基站 current serving BS当无线信道拥挤时的呼叫转移calling forward on mobile subscriber not reachable (CENRc)刀型天线 blade antenna导频 pilot frequency导频跌落pilot fall down倒L型天线 inverted-L antenna等步的 isochronous等幅电报 continuous wave telegraph等权网(互同步网) democratic network (mutually synchronized network) 等效比特率 equivalent bit rate等效地球半径 equivalent earth radius等效二进制数 equivalent binary content等效全向辐射功率 equivalent isotropically radiated power (e. i. r. p.) 等效卫星线路躁声温度 equivalent satellite link noise temperature低轨道卫星系统 LEO satellite mobile communication system低气压实验 low atmospheric pressure test低时延码激励线性预测编码 low delay CELP (LD-CELP)低通滤波器 low pass filter低温实验 low temperature test低躁声放大器 low noise amplifier地-空路径传播 earth-space path propagation地-空通信设备 ground/air communication equipment地波 ground wave地面连线用户 land line subscriber地面无线电通信 terrestrial radio communication地面站(电台) terrestrial station第N次谐波比 nth harmonic ratio第二代无绳电话系统 cordless telephone system second generation (CT-2) 第三代移动通信系统 third generation mobile systems点波束天线 spot beam antenna点对地区通信 point-area communication点对点通信 point-point communication点至点的GSM PLMN连接 point to point GSM PLMN电报 telegraphy电报电码 telegraph code电波衰落 radio wave fading电池功率 power of battery电池能量 energy capacity of battery电池容量 battery capacity电池组 battery电磁波 electromagnetic wave电磁波反射 reflection of electromagnetic wave电磁波饶射 diffraction of electromagnetic wave电磁波散射 scattering of electromagnetic wave电磁波色射 dispersion of electromagnetic wave电磁波吸收 absorption of electromagnetic wave电磁波折射 refraction of electromagnetic wave电磁场 electromagnetic field电磁发射 electromagnetic field电磁辐射 electromagnetic emission电磁干扰 electromagnetic interference (EMI)电磁感应 electromagnetic induction电磁环境 electromagnetic environment电磁兼容性 electromagnetic compatibility (EMC)电磁兼容性电平 electromagnetic compatibility level 电磁兼容性余量 electromagnetic compatibility margin 电磁脉冲 electromagnetic pulse (EMP)电磁脉冲干扰 electromagnetic pulse jamming电磁敏感度 electromagnetic susceptibility电磁能 electromagnetic energy电磁耦合 electromagnetic coupling电磁屏蔽 electromagnetic shielding电磁屏蔽装置 electromagnetic screen电磁骚扰 electromagnetic disturbance电磁噪声 electromagnetic noise电磁污染 electromagnetic pollution电动势 electromotive force (e. m. f.)电话机 telephone set电话局容量 capacity of telephone exchange电话型电路 telephone-type circuit电话型信道 telephone-type channel电离层 ionosphere电离层波 ionosphere wave电离层传播 ionosphere propagation电离层反射 ionosphere reflection电离层反射传播 ionosphere reflection propagation电离层散射传播 ionosphere scatter propagation电离层折射 ionosphere refraction电离层吸收 ionosphere absorption电离层骚扰 ionosphere disturbance电流探头 current probe电路交换 circuit switching电屏蔽 electric shielding电视电话 video-telephone, viewphone, visual telephone电台磁方位 magnetic bearing of station电台方位 bearing of station电台航向 heading of station电文编号 message numbering电文队列 message queue电文格式 message format电文交换 message switching电文交换网络 message switching network电文结束代码 end-of-message code电文路由选择 message routing电小天线 electronically small antenna电信管理网络 telecommunication management network (TMN)电信会议 teleconferencing电压变化 voltage change电压变化持续时间 duration of a voltage change电压变化的发生率 rate of occurrence of voltage changes电压变化时间间隔 voltage change interval电压波动 voltage fluctuation电压波动波形 voltage fluctuation waveform电压波动量 magnitude of a voltage fluctuation电压不平衡 voltage imbalance, voltage unbalance电压浪涌 voltage surge电压骤降 voltage dip电源 power supply电源电压调整率 line regulation电源抗扰性 mains immunity电源持续工作能力 continuous operation ability of the power supply 电源去耦系数 mains decoupling factor电源骚扰 mains disturbance电子干扰 electronic jamming电子工业协会 Electronic Industries Association (EIA)电子系统工程 electronic system engineering电子自动调谐 electronic automatic tuning电子组装 electronic packaging电阻温度计 resistance thermometer跌落试验 fall down test顶部加载垂直天线 top-loaded vertical antenna定长编码 block code定期频率预报 periodical frequency forecast定时 clocking定时超前 timing advance定时电路 timing circuit定时恢复(定时抽取) timing recovery (timing extration)定时截尾试验 fixed time test定时信号 timing signal定数截尾试验 fixed failure number test定向天线 directional antenna定型试验 type test动态频率分配 dynamic frequency allocation动态信道分配 dynamic channel allocation动态重组 dynamic regrouping动态自动增益控制特性 dynamic AGC characteristic抖动 jitter独立边带 independent sideband独立故障 independent fault端到端业务 teleservice短波传播 short wave propagation短波通信 short wave communication短路保护 short-circuit protection短期抖动指示器 short-term flicker indicator短期频率稳定度 short-term frequency stability短时间中断(供电电压) short interruption (of supply voltage)段终端 section termination对称二元码 symmetrical binary code对地静止卫星 geostationary satellite对地静止卫星轨道 geostationary satellite orbit对地同步卫星 geosynchronous satellite对讲电话机 intercommunicating telephone set对空台 aeronautical station对流层 troposphere对流层波道 troposphere duct对流层传播 troposphere propagation对流层散射传播 troposphere scatter propagation多次调制 multiple modulation多点接入 multipoint access多电平正交调幅 multi-level quadrature amplitude modulation (QAM) 多分转站网 multidrop network多服务器队列 multiserver queue多工 multiplexing多工器 nultiplexer多功能系统 MRS多级处理 multilevel processing多级互连网络 multistage interconnecting network多级卫星线路 multi-satellite link多径 multipath多径传播 multipath propagation多径传播函数 nultipath propagation function多径分集 multipath diversity多径时延 multipath delay多径衰落 multipath fading多径效应 multipath effect多路复接 multiplexing多路接入 multiple access多路信道 multiplexor channel多脉冲线性预测编码 multi-pulse LPC (MPLC)多频信令 multifrequency signalling多普勒频移 Doppler shift多跳路径 multihop path多信道选取 multichannel access (MCA)多信道自动拨号移动通信系统multiple-channel mobile communication system with automatic dialing 多优先级 multiple priority levels多帧 multiframe多址呼叫 multiaddress call多址联接 multiple access多重时帧 multiple timeframe多用户信道 multi-user channel通信工程专业英语汉英对照(E-H)2008年11月14日星期五 21:09E额定带宽 rated bandwidth额定射频输出功率 rated radio frequency output power额定使用范围 rated operating range额定音频输出功率 rated audio-frequency output power额定值 rated value爱尔兰 erlang恶意呼叫识别 malicious call identification (MCI)耳机(受话器) earphone耳机额定阻抗 rated impedance of earphone二十进制码 binary-coded decimal (BCD) code二十进制转换 binary-to-decimal conversion二十六进制转换 binary-to-hexadecimal conversion二进制码 binary code二进制频移键控 binary frequency shift keying (BFSK)二进制数 binary figure二频制位 binary digit(bit)二频制 two-frequency system二维奇偶验码 horizontal and vertical parity check code二线制 two-wire system二相差分相移键控 binary different phase shift keying (BDPSK) 二相相移键控 binary phase shift keying (BPSK)F发报机 telegraph transmitter发射 emisssion发射(或信号)带宽 bandwidth of an emission (or a signal)发射机 transmitter发射机边带频谱 transmitter sideband spectrum发射机额定输出功率 rated output power of transmitter发射机合路器 transmitter combiner发射机冷却系统 cooling system of transmitter发射机启动时间 transmitter attack time发射机效率 transmitter frequency发射机杂散躁声 spurious transmitter noise发射机之间的互调 iner-transmitter intermodulation发射机对答允许频(相)偏transmitter maximum permissible frequency(phase) deviation 发射类别 class of emission发射频段 transmit frequency band发射余量 emission margin发送 sending发送响度评定值 send loudness rating (SLR)繁忙排队/自动回叫 busy queuing/ callback反馈控制系统 feedback control system反射功率 reflection power反射卫星 reflection satellite反向话音通道 reverse voice channel (RVC)反向控制信道 reverse control channel (RECC)泛欧数字无绳电话系统 digital European cordless telephone方舱 shelter方向性系数 directivity of an antenna防爆电话机 explosion-proof telephone set防潮 moisture protection防腐蚀 corrosion protection防霉 mould proof仿真头 artificial head仿真耳 artificial ear仿真嘴 artificial mouth仿真天线 dummy antenna放大器 amplifier放大器线性动态范围 linear dynamic range of amplifier放电 discharge放电电压 discharge voltage放电深度 depth of discharge放电率 discharge rate放电特性曲线 discharge character curve非等步的 anisochronous非归零码 nonreturn to zero code (NRZ)非均匀编码 nonuniform encoding非均匀量化 nonuniform quantizing非连续干扰 discontinuous disturbance“非”门 NOT gate非强占优先规则 non-preemptive priority queuing discipline非受控滑动 uncontrolled slip非线性电路 nonlinear circuit非线性失真 nonliear distortion非线性数字调制 nonlinear digital modulation非占空呼叫建立 off-air-call-set-up (OACSU)非专用控制信道 non-dedicated control channel非阻塞互连网络 non-blocking interconnection network分贝 decibel (dB)分辨力 resolution分布参数网络 distributed parameter network分布式功能 distributed function分布式数据库 distributed database分别于是微波通信系统 distributed microwave communication system分布式移动通信系统 distributed mobile communication system分布路线 distribution link分段加载天线 sectional loaded antenna分机 extension分集 diversity分集改善系数 diversity improvement factor分集间隔 diversity separation分集增益 diversity gain分集接收 diversity reception分接器 demultiplexer分频 frequency division分散定位 distributed channel assignment分散控制方式 decentralized control分散式帧定位信号 distributed frame alignment signal分同步(超同步)卫星 sub-synchronous (super-synchronous) satellite 分谐波 subharmonic分组交换 packet switching分组码 block code分组无线网 packet radio network分组循环分散定位 block cyclic distributed channel assigment分组组装与拆卸 packet assembly and disassembly封闭用户群 closed user group (CUG)峰包功率 peak envelop power峰值 peak value峰值-波纹系数 peak-ripple factor峰值包络检波 peak envelop detection峰值功率 peak power峰值功率等级(移动台的) peak power class (of MS)峰值检波器 peak detector峰值限制 peak limiting蜂窝手持机 cellular handset蜂窝系统 cellular system缝隙天线 slot antenna服务基站 serving BS服务访问点 service access point (SAP)服务弧 service arc服务可保持性 service retainability服务可得到性 service accessibility服务提供部门 service provider服务完善性 service integrity服务小区 serving cell服务易行性 service operability服务支持性 service supportability服务质量 quality of service服务准备时间 service provisioning time符号率 symbol rate幅度检波 amplitude detection幅度量化控制 amplitude quantized cntrol幅度失真 amplitude distortion幅度调制 amplitude modulation (AM)幅频响应 amplitude-frequency response幅相键控 amplitude phase keying (APK)辐射 radiation辐射单元 radiating element辐射方向图 radiation pattern辐射干扰 radiated interference辐射近场区 radiating near-field region辐射能 radiant energy辐射强度 radiation intensity辐射区 radiated area辐射实验场地 radiation test site辐射效率 radiation efficiency辐射源(电磁干扰) emitter (of electromagnetic disturbance) 辐射杂散发射 radiated spurious emission辐射阻抗 radiation impedance俯仰角 pitch angle负极 negative electrode负离子 negative ion负荷容量(过荷点) load capacity (overload point)负逻辑 negative logic负码速调整(负脉冲塞入) negative justification (negative pulse stuffing) 负载调整率 load regulation负阻放大器 negative resistance amplifier负阻效应 negative resistance effect负阻振荡 negative resistance oscillation附加符号 additional character附加位 overhead bit复合音 complex sound复接器 multiplexer复节-分接器 muldex复接制 multiple connection system复位 reset复用转接器 transmultiplexer复帧 multiframe副瓣 minor lobe副瓣电平 minor level覆盖区(一个地面发射台的) coverage area (of a terrestrial transmitting station)G概率 probability概率分布 probability distribution概率信息 probabilistic information概率译码 probabilistic decoding干扰 interference干扰参数 interference parameter干扰限值 limit of interference干扰信号 interfering signal干扰抑制 interfering suppression干扰源 interfering resource干线 trunk line感应近场区 reactive near-field region港口操作业务 port operation service港口电台 port station港口管理系统 harbor management system港口交通管理系统 harbor traffic control system高[低]电平输出电流 high (low)-level output current高[低]电平输出电压 high (low)-level output voltage高波 high-angle ray高层功能 high layer function高层协议 high layer protocol高级数据链路控制规程 high level data link control (HDLC) procedure高级通信业务 advanced communication service高级研究计划署 Advanced Research Projects Agency (ARPA)高级移动电话系统 Advanced Mobile Phone System (AMPS)高频放大器 high frequency amplifier高频提升 high frequency boost高频增益控制 high frequency gain control高斯信道 Gauss channel (AWG)高斯最小频移键控 Guassian minimum shift keying (GMSK)高频制频率时的发射频偏 transmitting frequency deviation of high frequency高通滤波器 highpass filter高温高湿偏置试验 high temperature high humidity biased testing (HHBT) 高温功率老化 burning高温试验 high temperature test告警接收机 warning receiver告警指示信号 alarm indication signal (AIS)戈莱码 Golay code戈帕码 Goppa codes格码调制 trellis codes modulation schemes (TCM)隔离放大器 isolation amplifier个人数字助理 personal digital assistant (PDA)个人电台 personal station (PS)个人电台系统 personal radio system个人识别号码 personal identification number (PIN)个人通信 personal communications个人通信网 personal communication networks (PCN)个人携带电话 personal handy phone (PHP)个人移动性 personal mobility个体接收(在卫星广播业务中) individual reception跟踪保持电路 track and hold circuit跟踪带宽 tracking bandwidth更改地址插入 changed address interception工科医用(的) ISM工科医用频段 ISM frequency band工业干扰 industrial interference工作最高可用频率 operational MUF工作比 duty cycle工作范围 working range工作频率范围 operating frequency range工作站 work station (WS)工作周期 cycle of operation公共分组交换网 public packet switched network公共耦合点 point of common coupling (PCC)公开密匙体制 public key system公路交通管制系统 highway traffic control system公用数据网 public data network公众陆地移动电话网 public land mobile network (PLMN)功能键 function key功能群,功能群令 function group, function grouping功率合成 power synthesis功能控制报文 power control message功率控制电平 power control level功率谱密度 power spectrum density功率损耗 power loss功率因子 power factor供电系统阻抗 supply system impedance共道抑制 co-channel suppression共道信令 co-channel signalling共模电压,不平衡电压 common mode voltage, asymmetrical voltage 共模电流 common mode current共模转换 common code conversion共模干扰 common code interference共模抑制比 common code rejection ratio (CMRR)共模增益 common mode gain共模阻抗 common code impedance共信道再用距离 co-channel re-use distance贡献路线 contribution link固定电台 fixed station固定基地电台 fixed base station固定信道指配 fixed channel assignment固态发射机 solidstate transmitter固有可靠性 inherent reliability固有频差 inherent frequency error故障 fault故障安全 fault safe故障保护 fault protection故障弱化 failsoft故障修复 fault correcting故障原因 fault cause故障准则 fault criteria挂机信号 hang-up signal管理中心 administration center (ADC)广播控制信道(BCCH)划分 BCCH allocation (BA)广播寻呼系统 broadcast paging system广域网 wide area network (WAN)归零码 return to zero code (RZ)归一化的偏置 normalized offset规程 protocol规范 specification规则脉冲激励编码 regular-pulse excitation (RPE)规则脉冲激励长时预测编码 regular-pulse excitation LPC (RPE-LPC)轨道 orbit国际标准 international standard国际单位制 international system of units国际电报电话咨询委员会 CCITT国际电工委员会 IEC国际电信联盟 ITU国际互连网 Internet国际民航组织 ICAO , international civil aviation organization国际通信卫星组织 INTERAT国际海事卫星组织 INMAR-SAT国际无线电干扰特别委员会 CISPR国际无线电干扰委员会 CCIR国际移动识别码 international mobile station equipment identity (IMEI) 国际移动用户识别码 international mobile subscriber identity (IMSI)国际原子时间 international automatic time (TAI)国家标准 national standard国家信息基础结构 national information infrastructure (NII)过充电 overcharge过滤带 transition band过放电 overdischarge过荷保护电路 overload protecting circuit过荷分级控制 overload control category过荷控制 overload control过调制 overmodulation过流保护 overcurrent protection过压保护 overvoltage protectionH海岸地球站 coast earth station海岸电台 coast station海事卫星通信 maritime satellite communications汉明距离 Hamming distance汉明码 Hamming code汉明重量 Hamming weight航空地球站 aeronautical earth station航空电台 aeronautical station航空器地球站 aircraft earth station航空器电台 aircraft station航空移动业务 aeronautical mobile service航天器(宇宙飞船) spacecraft毫米波 millimeter wave黑格巴哥码 Hagelbarger code恒比码 constant ratio code恒步的 homochronous恒流电源 constant current power supply恒温恒湿试验 constant temperature and humid test恒压充电 constant voltage charge恒压电源 constant voltage power supply恒电磁波小室 transverse electromagnetic wave cell (TEM cell)喉式传声器 throat microphone后瓣 back hole厚模电路 thick-film circuit呼叫 call呼叫支持 call hold (HOLD)呼叫存储 call store呼叫等待 call waiting (CW)呼叫改发 call redirection呼叫建立 call establishment呼叫建立时间 call set-up time呼叫接通率 percept of call completed呼叫控制信号 call control signal呼叫清除延时 call clearing delay呼叫释放 call release呼叫序列 calling sequence呼叫转移 call transfer (CT)呼救 distress call呼救系统 distress system呼损率 percept of call lost呼通概率 calling probability互补金属氧化物半导体集成电路complementary MOS integrated circuit (COMOS-IC)互连 interworking互连的考虑 interworking consideration互连功能 interworking function (IWF)互调 intermodulation互调产物(一个发射台的) intermodulation products (of a transmitting stastion)互调抗扰性 intermodulation immunity互调失真 intermodulation distortion互通性 interoperability互同步网 mutually synchronized network话路输入电平 voice circuit input level话路输入电平差异 voice circuit input level difference话务量 telephone traffic话音活动检测 voice activity detection (VAD)话音激活 voice exciting话音激活率 speech activity话音数字信令 speech digit signalling话音突发 speech spurt环境试验 environment test环境系数 environment factor环境应力筛选 environment stress screening (ESS)环境躁声 ambient noise环路传输 loop transmission环路高频总增益 loop RF overall gain环路可锁定最底(最高)界限角频率loop lockable minimum (maximum) margin angular frequency 环路滤波器比例系数 loop filter proportion coefficient环路躁声带宽 loop noise bandwidth环路增益 loop gain环路直流总增益 loop DC overall gain环路自然谐振角频率 loop natural resonant angular frequency 环形波 ring wave环形混频器 ring mixer环行器 circulator环行延迟 rounding relay恢复 recovery恢复规程 restoration procedure汇接交换 tandem switching汇接局 tandem office会话(在电信中) conversation (in telecommunication)会话层 session layer会议电话 conference telephone混合ARQ hybrid ARQ混合差错控制 hybrid error control (HEC)混合分集 hybrid diversity混合集成电路 hybrid integrated circuit混合扩频 hybrid spread spectrum混合路径传播 mixed-path propagation混合信道指配 hybrid channel assignment混频器 mixer混频器的寄生响应 mixer spurious response活动模式 active mode“或”门 OR gate“或非”门 NOR gate通信工程专业英语汉英对照(I-L)2008年11月14日星期五 21:11J机壳辐射 cabinet radiation机载电台 aircraft station基本传输损耗(无线线路的) basic transmission loss (of a radio link) 基本接入 basic access基本业务(GSM的) basic service (of GSM)基本越区切换规程 basic handover procedure基本最高可用频率 basic maximun usable frequency基波(分量) fundamental (component)基波系数 fundamental factor基带 baseband基地(海岸)(航空)设备 base (coast)(aeronautical) equipment基地电台 base station (BS)基站控制器 base station controller (BSC)基站识别码 base station identity code (BSIC)基站收发信台 base transceiver station (BTS)基站系统 base station system (BSS)基站区 base station area基准条件 reference condition基准阻抗 reference impedance奇偶校验码 parity check code奇偶校验位 parity bit激活 activation吉尔伯特码 Gilbert code级联码 concatenated code即时业务 demand service急充电 boost charge急剧衰落 flutter fading集成电路 integrated circuit集成电路卡 integrated circuit card集群电话互连 trunked telephone connect集群电话互连器 trunked telephone connector集群基站 trunked base station集群效率 trunking efficiency集群移动电话系统 trunked mobile communication system集体呼叫 group call集体接收(在卫星广播业务中) community reception集中控制方式 centralized control集中式帧定位信号 bunched frame alignment signal计费信息 advice of charge。
通信英语(翻译短文)
1.If we consider binary transmission, the complete information about a particular message will always be obtained by simply detecting the presence or absence of the pulse. By comparison, most other forms of transmission systems convey the message information using the shape, or level of the transmitted signal; parameters that are most easily affected by the noise and attenuation introduced by the transmission path. Consequently there is an inherent advantage for overcoming noisy environments by choosing digital transmission.研究二进制信号的传输可见,只要简单的区判别脉冲的有和无,完美就获得了一条消息的全部信息。
相比之下,许多其他形式的传输系统是利用被传信号的波形或电平的高低来传送信息的,而这些参数又极易受到传输途径中的噪声和衰耗的影响。
因此选择数字传输系统在克服噪声环境的影响方面有其固有的优势。
2.The reader may ask, how does the demultiplexer know which group of 8-digits relates to channel 1,2, and so on? Clearly this is important! The problem is easily overcome by specifying a frame format, where at the start of each frame a unique sequence of pulses called the frame code, or synchronization word, is placed so at to identify the start of the frame. A circuit of the demultiplexer is arranged to detect the synchronization word, and thereby it knows that the next group of 8-digits corresponds to channel 1.读者也许会问,分路设备怎么会知道哪一组8位码对应于第1路、第2路及其他各路呢?显然这是很重要的。
通信工程专业英语翻译(西安电子科大常义林)
通信工程专业英语翻译1数字表示形式的信息数字表示的主要优势在于普遍性的表示形式。
由于任何形式的媒体,将它的文本、图像或声音,唯一的形式,相同的方式和相同类型的设备最终处理结果序列中的位数,所有种类的信息编码。
此外,转换的数字信息是免费的错误而模拟转换介绍扭曲和噪音。
1.存储相同的数字数据存储设备可用于所有的媒体。
唯一的区别可能在于大小要求。
仍图像和视频的议案要求大量比文本或图形。
声音也苛刻虽然不如成像。
因此,适当的数字设备可能是必需的例如光盘只读记忆(光盘)。
但关键的一点是,单个类型的数字设备可能会存储所有种类的信息。
2、传输任何能够携带bits 的数据通信系统具有传输任何多媒体数字信息的潜力。
因此,单一的通信网络,支持数字传输可以在理论上,设想。
这一概念称为是旨在整合所有信息传播媒介的运输设施的综合的服务数字网络。
困难可能出现的某些应用程序,特别是要求那些需要尊重高保真的数字信号的时间依赖。
甚至当潜在的整合不同类型的单个通信系统上的信息不利用此漏洞,数字与模拟传输的好处很多。
第一,数字信号是传输噪声比模拟信号不太敏感。
第二,再生的信号,是加强减毒的信号,该进程的更容易。
第三,可以实现错误检测和更正。
第四,加密的信息也是更容易。
3.处理像所有的信息存储在计算机上,它可以将处理、分析、修改、更改或辅之以计算机程序的任何其他数据一样。
这可能是潜力在哪里的最高水平。
可能会试图识别语义内容(语音、手写、表单和模式识别)。
高级的内容识别的一个示例是削减议案视频自动识别和索引视频序列的检测。
数据结构,链接使用指针之间信息的元素,可能会创建更快和灵活的检索。
通过剪切和粘贴函数来创建monomedia 强大编辑(例如声音只)或多媒体文档是可能。
可去除噪音或错误的改进信息的质量,按所示的旧的乙烯基记录数字化来创建高质量音频光盘。
信息相似但创建通过不同类型的流程─ 如议案影像合成的电脑和摄像机拍摄到的视频五月将混在一起。
通信工程专业英语课文翻译
Technology of Modern CommunicationText A: BluetoothBluetooth wireless technology is a short-range communications technology intended to replace the cables connecting portable(轻便的)and fixed devices while maintaining high levels of security.The key features of Bluetooth technology are robustness(稳健), low power, and low cost .The Bluetooth specification defines a uniform structure for a wide range of devices to connect and communicate with each other.蓝牙无线技术是一种小范围无线通信技术,旨在保持高安全级的基础上,在便携式设备与固定设备之间实现无线连接。
蓝牙技术的主要特点是稳健,低功耗和低成本。
蓝牙规范定义了一个统一的结构,适用范围广的设备连接并相互沟通。
Bluetooth technology has achieved global acceptance such that any Bluetooth enable device, almost everywhere in the world, can connect to other Bluetooth enabled devices in proximity. Bluetooth enabled electronic devices connect and communicate wirelessly through short-range, ad hoc(特别)networks known as piconets Each device can simultaneously communicate with up to seven other devices within a single piconet. Each device can also belong to several piconets simultaneously. Piconets are established dynamically and automatically as Bluetooth enabled devices enter and leave radio proximity.蓝牙技术已取得全球认可,使得任何支持蓝牙的设备,几乎在世界各地,可以连接到其他支持蓝牙的邻近装置。
通信工程专业英语
一、二、三、汉译英1、时分多址:TDMA (Time Division Multiple Address/ Time Division Multiple Access)2、通用无线分组业务:GPRSGeneral Packet Radio Service3、国际电报电话咨询委员会:CCITT4、同步数字体系:SDH Synchronous Digital Hierarchy (同步数字序列)5、跳频扩频:FHSS frequency hopping spread spectrum6、同步转移模块:STM synchronous transfer module7、综合业务数字网:ISDNIntegrated Services Digital Network8、城域网:MAN Metropolitan Area Network9、传输控制协议/互联网协议:TCP/IPTransmission Control Protocol/Internet Protocol10、服务质量:QOS Quality of Service11、中继线:trunk line12、传输速率:transmission rate13、网络管理:network management14、帧结构:frame structure15、移动手机:Mobile Phone 手机Handset16、蜂窝交换机:(Cellular switches)(电池开关cell switch)(cell 蜂房)17、天线:Antenna18、微处理器:microprocessor19、国际漫游:International roaming20、短消息:short message21、信噪比:SNR(Signal to Noise Ratio)22、数字通信:Digital communication23、系统容量:system capacity24、蜂窝网:cell network(cellular network)(Honeycomb nets)25、越区切换:Handover26、互联网:internet27、调制解调器:modem28、频谱:spectrum29、鼠标:Mouse30、电子邮件:electronic mail E-mail31、子网:subnet32、软件无线电:software defined radios33、网络资源:network resources四、英译汉1、mobile communication:移动通信2、Computer user:计算机用户3、Frame format:帧格式4、WLAN:wireless local area network 无线局域网络5、Communication protocol:通信协议6、Transmission quality:传输质量7、Remote terminal:远程终端8、International standard:国际标准9、GSM:全球移动通信系统Transfer Mode Global System for Mobile Communications10、C DMA:码分多址Code Division MultipleAccess11、ITU:国际电信联盟International Telecommunication Union12、P CM:pulse code modulation 脉冲编码调制13、W DM:波分复用Wavelength DivisionMultiplex14、F CC:联邦通信委员会Federal communications commission15、P STN:公用电话交换网Public Switched Telephone Network16、N NI:网络节点借口Network Node Interface17、W WW:万维网World Wide Web18、V OD:视频点播Video-On-Demand19、V LR:访问位置寄存器Visitor Location Register20、MSC:移动交换中心Mobile SwitchingCentre21、H LR:原籍位置寄存器Home Location Register22、VLSI:超大规模集成电路Very Large Scale Integrated Circuits23、Bluetooth technology:蓝牙技术24、Matched filter:匹配滤波器25、ADSL:非对称数字用户环路Asymmetrical Digital Subscriber Loop非对称数字用户线路(Asymmetric Digital Subscriber Line)26、GPS:全球定位系统Global PositionSystem27、ATM:异步传输模式Asynchronous三、汉译英1、脉冲编码调制(PCM)依赖于三个独立的操作:抽样、量化和编码。
通信与电子信息科技英语课件unit13
Mobile Wireless
To prevent interference between cells, the first type of mobile wireless communications system, which is referred to as the Analog Mobile Phone System (AMPS), employed a seven cell pattern, as illustrated in Fig.13 1. The cell pattern shown in Fig.13 1 ensures that no adjacent cells operate on the same frequency. In actuality, each cell consists of a base station and antenna that supports operations over a wide range of frequencies. However, only one call can occur at one of the frequencies supported in a cell at any given time; the cell pattern is used to ensure that two adjacent cells do not use the same frequency at the same time.
error correctionreciprocal
5. 时隙
time slot
6.
cellular phone
Exercises
7. 个人通信系统 Personal Communication System (Prvice(SMS)
电子信息与通信工程专业英语期末必考翻译
1."In most cases, these signals originate as sensory data from the real world: seismic vibrations visual images, sound waves, etc. DSP isthe mathematics, the algorithms, and the techniques used to manipulate these signals after they have been converted into a digital form." 在大多数情况下,这些信号来源于人对真实世界的感觉,比如地震的震动,视觉图像,声音波形等。
数字信号处理是一种数学工具,是一种用来处理那些将上述信号转换成数字形式后的信号的算法和技术。
2.Fourier’s representation of functionsas a superposition of sines and cosines has become Ubiquitous for both the analytic and numerical solution of differential equations and for the analysis and treatment of communication signals 函数的傅里叶表示,即将函数表示成正弦和余弦信号的叠加,这种方法已经广泛用于微分方程的解析法和数值法求解过程以及通信信号的分析和处理。
3.If f (t ) is a nonperiodic signal, the summation of the periodic functions ,such as sine and cosine, does not accurately represent the signal. You could artificially extend the signal to make it periodic but it would require additional continuity at the end points . 如果f(t)是非周期信号,那么用周期函数例如正弦和余弦的和,并不能精确的表示该信号f(t)。
工程硕士英语基础教程学生用书(第三版)第13课英文原文及分段中文翻译
U13A Simple Truth About Happiness关于快乐的简单真相If you're waiting for it,you've missed the point如果你正在等待快乐,那么你将错失良机Each of us owes it to our spouses, our children, our friends to be as happy as we can be. Anyone can be unhappy; it takes no courage or effort. True achievement lies in struggling to be happy.我们每个人为了让我们的配偶、孩子、朋友快乐,都要尽可能的做到快乐。
任何人都可以感到不快乐,那不需要任何勇气和努力。
但是努力寻找快乐才是一个人真正的成就。
The concept that we have to work at happiness comes as news to many people. We assume it's a feeling that comes as a result of good things that just happen to us, things over which we have little or no control.致力于寻找快乐对许多人来说是一个全新的观念。
我们通常认为快乐是伴随着某些美好的事物而来的,这些事物是我们碰巧碰到的,而不是我们可以掌控的。
But the opposite is true: happiness is largely under our control. It is a battle to be waged and not a feeling to be awaited.但是,事实却相反,快乐完全在我们的掌控之中。
通信工程专业英语翻译
通信工程专业英语翻译Part B1. Desktop systems allow remote users to share CAD files as well as other office documents created in spreadsheets, word processors, presentation packages, etc.桌面系统让远程用户能够共享计算机辅助设计档案与其他一些制作在电子表格、文字处理器、图像程序包中的办公室文件。
3. At the World’s Fair 1964, AT&T demonstrated its first videophone, a desktop (or countertop)configuration that provided low quality images using analog technology.在1964年的世界博览会上,美国电话电报公司展示了其首款可视电话-一种桌面(或者台式)机器。
由于使用的是模拟技术,它提供的图像质量不高。
5. Today, systems level implementers have to live within the constraints of standards-based compression algorithms, since standards are the foundation for interoperability, which in the communications field is absolutely necessary.如今,系统水平的操作者不得不受限于基于标准的压缩算法,由于标准时互用性的基础。
而在通行领域,互用性是极其重要的。
Part A1. The word “multimedia”is being used to describe a mixture of hardware, software and applications, with a consequent confusion in people’s mind as to what it is.“多媒体”一词被用来描述硬件、软件及应用的混合体。
通信工程专业英语翻译
Fiberto the Home(光纤到家)光纤到家(FTTH)是一个住宅的通信基础设施,光纤电缆运行所有的方式向用户。
经过多年的期待,各种部署光纤到户是最后出现在美国各地的社区虽然光纤到户是一种技术,它为本地接入市场的竞争动态有趣的影响。
光纤到户网络可以提供的带宽比目前现有的宽带技术的许多倍。
今天似乎每个人都想要的高速数据,可靠的语音服务,高质量的视频。
无论这些服务是由数字用户线(DSL)交付,电缆调制解调器或无线架构是微不足道的,只要服务是快速和可靠的。
FTTH使运营商能够提供多种通信和娱乐服务,包括高速互联网接入,广播,有线电视,直播卫星(DBS)电视,互动的双向视频服务。
此外,一个FTTH解决方案基于波分复用(WDM),允许更多的灵活性和适应性,进一步支持服务。
进一步支持服务的适应性。
在FTTH系统,在前端设备或是连接到公共交换电话网络(PSTN)唱DS-1和连接到A TM、以太网接口。
视频服务从有线电视(CATV)进入系统的头端或来至卫星饲料。
所有这些信号,然后合并成采用WDM技术单光纤传输通过无源光分路器的最终用户。
分路器通常放在离中心局(CO)约3000英尺。
分流比的范围可以从2到32的用户并没有在网络中使用任何活性成分。
然后将信号送到3个000英尺的家在一个单一的纤维。
一个理想的F TTH系统必须提供的所有服务用户的能力支付,如电路交换电话,视频服务、高速数据广播。
在家里,光信号转换成电信号的光电转换器(OEC)。
OEC把信号分成由最终用户所需的服务。
理想情况下,其将有标准的用户界面,提供所需的服务不集LL D 盒。
这些接口包括电话RJ11插孔,RJ45接口的高速数据,和75欧姆同轴电缆端口的有线电视和卫星直播业务。
通信工程专业英语
一、汉译英1、时分多址:TDMA (Time Division Multiple Address/ Time Division Multiple Access)2、通用无线分组业务:GPRSGeneral Packet Radio Service3、国际电报电话咨询委员会:CCITT4、同步数字体系:SDH Synchronous Digital Hierarchy (同步数字序列)5、跳频扩频:FHSS frequency hopping spread spectrum6、同步转移模块:STM synchronous transfer module7、综合业务数字网:ISDNIntegrated Services Digital Network8、城域网:MAN Metropolitan Area Network9、传输控制协议/互联网协议:TCP/IP Transmission Control Protocol/Internet Protocol10、服务质量:QOS Quality of Service11、中继线:trunk line12、传输速率:transmission rate 13、网络管理:network management14、帧结构:frame structure15、移动手机:Mobile Phone 手机Handset16、蜂窝交换机:(Cellular switches)(电池开关cell switch)(cell 蜂房)17、天线:Antenna18、微处理器:microprocessor19、国际漫游:International roaming20、短消息:short message21、信噪比:SNR(Signal to Noise Ratio)22、数字通信:Digital communication23、系统容量:system capacity24、蜂窝网:cell network(cellular network)(Honeycomb nets)25、越区切换:Handover26、互联网:internet27、调制解调器:modem28、频谱:spectrum29、鼠标:Mouse30、电子邮件:electronic mail E-mail31、子网:subnet32、软件无线电:software defined radios33、网络资源:network resources二、英译汉1、mobile communication:移动通信2、Computer user:计算机用户3、Frame format:帧格式4、WLAN:wireless local area network 无线局域网络5、Communication protocol:通信协议6、Transmission quality:传输质量7、Remote terminal:远程终端8、International standard:国际标准9、GSM:全球移动通信系统Global System for Mobile Communications 10、CDMA:码分多址Code Division Multiple Access11、ITU:国际电信联盟International Telecommunication Union 12、PCM:pulse code modulation 脉冲编码调制13、WDM:波分复用Wavelength Division Multiplex14、FCC:联邦通信委员会Federal communications commission 15、PSTN:公用电话交换网Public Switched Telephone Network16、NNI:网络节点借口Network Node Interface17、WWW:万维网World Wide Web18、VOD:视频点播Video-On-Demand19、VLR:访问位置寄存器Visitor Location Register20、MSC:移动交换中心Mobile Switching Centre21、HLR:原籍位置寄存器Home Location Register22、VLSI:超大规模集成电路Very Large Scale Integrated Circuits23、Bluetooth technology:蓝牙技术24、Matched filter:匹配滤波器25、ADSL:非对称数字用户环路Asymmetrical Digital Subscriber Loop 非对称数字用户线路(Asymmetric Digital Subscriber Line)26、GPS:全球定位系统Global Position System27、ATM:异步传输模式AsynchronousTransfer Mode三、汉译英1、脉冲编码调制(PCM)依赖于三个独立的操作:抽样、量化和编码。
《精品课件》电信英语UnitⅢ-13
• bus [bʌs] n. [计](电脑的)总线 • Ethernet ['i:θə,net] n. 以太网 • latency ['leitənsi] n. 潜伏;潜在因素 • integrate ['intiɡreit] v.使一体化;使集成 • instrumentation [,instrumen'teiʃən] n. 仪器
bVIEW is a graphical programming language from National Instruments. LabVIEW programs are called
virtual instruments often abbreviated to VIs.
LabVIEW:是美国国家仪器公司(National Instruments NI)1986年推出的图形化系统设计软件,现今,数以百万 的工程师和科学家可以使用LabVIEW来构建他们的测试、 测量与控制系统。
2.Real world signals are of analogue nature, while a computer is a digital instrument. Real world signals:现实世界的信号 现实世界的信号是模拟信号,而计算机是 数字仪器。
3.therefore the computer needs also interpreters – analogue-to-digital and digital-to-analogue converters for communication with the object. analogue-to-digital:模拟-数字,从模拟到数字 digital-to-analogue converter:数字-模拟转换器 因此计算机与对象进行通信时需要进行转译-模 数转换和数模转换,与被测对象进行通信。
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Unit 13Comparison between GSM and CDMA GSM与CDMA之比较Using CDMA/FDD technology, subscribers of CDMA cellular mobile communication system can transmit their information simultaneously through the same channel. On the other hand, the GSM system adopts TDMA/FDD method to transmit and distinguish information from different GSM mobile stations. In addition, in favor of QCELP arithmetic, RAKE receiver, power control and soft switching etc., CDMA shows more advantages in its system performance than the GSM, such as greater anti-interference capability, bigger system capacity, higher successful connection ratio, fewer off-line chances, low probability of intercept(LPI), and so on.使用码分多址/频分双工技术,用户的蜂窝移动通信系统的传输信息的同时,通过同样的渠道。
另一方面,该系统采用时分多址/频分双工传输的方法和识别信息从不同的移动台。
此外,有利于中国电信集团广州研发中心算术,耙式接收器,功率控制和软开关等,显示出更多的优势在码分多址系统性能比,如更高的抗干扰能力,更大的系统容量,连接成功率较高,离线的机会少,低截获概率(低截获概率),等。
1, Power Control and RAKE Receiver功率控制和瑞克接收机When different subscribers send their information to the same BS(base station), different signal power caused by different transmitting distances will consequentially cause interference with each other, especially for those MSs(mobile station) being far away from BS will be seriously disturbed because of their almost submerged signals by signals of the close-to-BS MSs.[2] p110In order to solve this problem and keep high system performance, power control technique is introduced in CDMA communication system, which can effectively overcome this cross-disturbance. As one of the core techniques in CDMA cellular mobile communication system, power control can make the signal power from all subscribers to the BS equivalent through adjusting the transmitting power from each subscriber.为解决这一问题,保持较高的系统性能,功率控制技术介绍了码分多址通信系统,它可以有效地克服这cross-disturbance。
作为一个核心技术在蜂窝移动通信系统的功率控制,可以使信号功率从所有用户的学士学位相当于通过调整发射功率,从每个用户。
Power control can be not only divided to open-loop control and closed-loop control, but also to forward (down) power control and backward (up) power control. For open-loop control method, subscriber adjusts emitting power according to the measured frame error probability, while for the closed-loop power control, base station measures the signal-to-noise ratio of received signals and then adjust the transmitting power of corresponding MS.功率控制不仅可以分为开环控制和闭环控制,而且还提出了(下)功率控制和反向功率控制(上)。
开环控制方法,用户调整发射功率根据测量帧错误概率,同时为闭环功率控制,基站测量接收信号的信噪比,然后调整发射功率相应的女士The backward power control in CDMA system can be divided into two kinds of control technique, the open-loop backward power control only used by mobile station, and the closed-loopbackward power control that can be adopted by both base station and mobile station. On the other hand, the forward power control is just used to reduce the disturbance from small adjacent districts.反向功率控制系统可分为开环控制技术,反向功率控制用的移动站,以及闭环反向功率控制,可以通过基站和移动站。
另一方面,正向功率控制是用来降低干扰小附近的地区。
RAKE Reception Technique(瑞克接收技术)Fading and distortion are inevitable for signals transmitted in mobile communication channel because of the unideal characteristics of channel, and then make bad influence on system performance. 变形是不可避免的衰落和信号传输的移动通信信道因为不理想的信道特性,进而会影响系统的性能。
The basic theory of RAKE reception technique is: by means of collecting all transmitted signals from multi-path and uniting them, the received signal power can obtain an effective enhancement, which can improve the output SNR and system performance. [3] p110Three, four RAKE receivers are respectively set in each MS, BS in CDMA system in order to receive the arriving branch signal of the same original from different transmitting routes, and then combine them to get an increscent output SNR after their respectively independent demodulation. Thus, in favor of RAKE reception technique, the disadvantageous factor that signal transmitted in multi-path because an advantageous factor in CDMA cellular mobile communication system.三,四的耙式接收器分别设置于每一毫秒,在码分多址系统,以便接收到信号相同的原始分支从不同的传播途径,并结合他们得到一个增大的输出信噪比后分别独立解调。
因此,有利于瑞克接收方法,发送信号的不利因素,因为一个有利因素在多径码分多址蜂窝移动通信系统。
2 Better Performance of CDMA性能更好的码分多址Greater Anti-interference Capability更大的抗干扰能力Because of spread spectrum modulation, bandwidth of user’s signal is extremely broadened by the assigned unique pseudo-random sequence, thus the modulated broad band signal owns spectral properties close to Gaussian white noise. Receiving this kind of spread spectrum signal, all the CDMA receivers try to demodulate it using PN sequence created locally , but only one receiver with the same local PN sequence as that in the received signal can convert the broad band noise-like signal into narrow band useful signal , while other receiver is still the insignificant broadband noise except the relative demodulator with the unique local PN sequence .由于扩频调制,带宽用户的信号是非常扩大的分配独特的伪随机序列,从而调制的宽带信号拥有光谱性能接近高斯白噪声。