analog 模拟digital 数字的binary-coded number 二进制编码数electromagnetic induction 电磁感应telegraph 电报triode vacuum tube 三级真空管broadcasting 广播amplitude modulation (AM)幅度调制frequency modulation (FM)频率调制phase modulation (PM) 相位调制transistor 晶体管linear integrated circuit 线性集成电路microwave 微波satellite 卫星optical fiber 光纤shortwave 短波negative-feedback amplifier 负反馈放大器PCM(Pulse-Code Modulation)脉冲编码调制time-division multiplexing (TDM)时分多路stereo FM 立体声调频error-correction code 纠错编码adaptive equalization 自适应均衡random access memory (RAM)随机存取存储器VLSI(very large scale integration)超大规模集成FAX (facsimile) 传真cellular telephone 蜂窝电话移动电话oscilloscope 示波器spread spectrum system 扩频系统ISDN(integrated services digital network)综合业务数字网HDTV(high definition television)高清晰度电视transmitter 发射机channel 信道频道通道receiver 接收机baseband 基带bandwidth (BW)频带宽度带宽ADC(analog-digital converter)模数变换器carrier 载波载流子bandpass signal 带通信号signal sideband (SSB)单边带phase-shift keying(PSK)相移键控ITU(international telecommunications union)国际电信联盟PTN(public telecommunications network)公用电信网络LOS propagation 视线传播ionospheric reflection 电离层反射high fidelity (Hi-Fi)高保真度signal-to-noise 信噪比interference 干扰mapping 映射dimension 维数量纲frequency selectivity 频率选择性photocathode 光电阴极raster scanning 光栅扫描blanking pulse 消隐脉冲multiplexer 多路转换器encoder 编码器decoder 译码器pixel 像素vocal tract filter 声道滤波器melodic structure 韵律结构harmonic structure 谐波结构interlaced fields 交替的场horizontal retrace 水平行回程primary colors 基色interactive video 交互式视频ASCII 美国标准信息交换码DCT (discrete cosine transform)离散余弦变换JPEG (joint photographic experts group)联合图像专家组MPEG(motion photographic experts group)) 活动图像专家组synchronous transmission 同步传输asynchronous transmission 异步传输frame 帧frame-packing 成帧modeling 建模Fourier series(FS) 傅里叶级数transmission medium 传输介质coaxial cable 同轴电缆instantaneous power 瞬时功率decibel 分贝dBRF(radio frequency)射频commutator 换向器转接器ripple 波纹起伏ionosphere 电离层potential difference 电位差shot noise 散弹噪声flicker noise 闪变噪声noise figure 噪声系数mathematic model 数学模型rms value 均方根值orthogonal series 正交系数power density spectrum 功率谱密度common logarithm 以10为底的对数DC power supply 直流电源AC ripple 交流波纹AM receiver 调幅接收机thermal noise 热噪声root-mean-square(rms)alternating current (AC) 交流direct current (DC) 直流cable television (CATV)有线电视field-effect transistor (FET)场效应晶体管bipolar junction transistor(BJT)晶体三极管inductor coil 电感线圈inductor 电感器rating power 额定功率capacitor 电容器quality factor 品质因数piezoelectric crystal 压电晶体inductive reactance 感抗capacitive reactance容抗susceptance 电纳mounting capacitance 安装电容impedance 阻抗notch filter 陷波式滤波器oscillator 振荡器flywheel effect 飞轮效应feedback 反馈loop gain 环路增益voltage gain 电压增益amplifier 放大器扩音器emitter 发射机base 基极collector 集电极inductive coupling 电感耦合radio-frequency choke (RFC)射频扼流圈junction capacitance 结电容integrated-circuit (IC)集成电路buffer amplifier 缓冲放大器chip 芯片frequency synthesizer 频率合成器energy dissipation 能耗tank circuit 槽路sinusoidal signal 正弦信号crystal oscillator 晶体振荡器monolithic chip 单片VHF(very high frequency) 甚高频UHF(ultra high frequency)超高频uncertainty 不确定性误差probability 概率几率autocorrelation 自相关函数covariance 协方差strict-sense stationary process 狭义平稳过程严平稳过程wide- sense stationary process 广义平稳过程宽平稳过程second-order process 二阶平稳过程infinity 无穷大ergodic process 各态遍历过程Gaussian process 高斯过程stochastic process 随机过程random signal 随机信号deterministic signal 确定信号argument function 被积函数joint probability distribution 联合概率分布statistical parameter 统计参数mathematical expectation 数学期望Gaussian white noise 高斯白噪声ensemble average 总体平均time average 时间平均correlation function 相关函数auto covariance 自协方差the first-order moment 一阶矩sample space 样本空间random variable 随机变量unbiased estimation 无偏估计normalized 归一化linear functional 线性泛函antenna 天线nonlinear 非线性的envelope 包络AM DSBFC 全载波的双边带调幅modulator 调制器class A amplifier (A)甲类放大器transformer 变压器double sideband (DSB)双边带AM envelope调幅包络carrier signal 载波信号voice-grade 话音级modulation coefficient 调制系数lower side band (LSB)下边带lower side frequency (LSF)上边频upper side band (USB)上边带upper side frequency (USF)上边频phasor 相量vector 矢量nonlinear mixing非线性混频frequency domain 频域coupling capacitor 耦合电容final stage 末级(电路)modulating signal 调制信号modulated wave 已调波emitter modulator 发射机调制器DSB AM 双边带幅度调制transistorized transmission 晶体管化发射机unitless 无量纲的lo-level modulator 低电平调制器modulation 调制过程modulator 实现调制的电路modulating signal 调制信号demodulation 在接收端从已调波中恢复调制信号的过程demodulator 解调器duplicate 复制品,副本inversion 倒置elimination 消除canonical 规范的quadrature 正交discrimination 辨别,区别,识别力nonoverlapping 不相重叠的resonator 谐振器,振荡器simultaneous 同时的,同时发生的subsequent 后来的,并发的reinforcement 增援,加强,加固junction 连接,交叉点prescribe 指示,规定cutoff 截止,切掉coherent 相干的,一致的locally 在本地undergo 经历,遭受,忍受difference 差分,差别angle modulation 角度调制complex envelop 复包络proportional 比例量,成比例的intergral 积分,综合deviation constant 偏移常数subscript 下标的integrator 积分器,综合者cascade 串联,级联instantaneous 瞬间的,即刻的frequency deviation 频率偏移nonnegative 非负的正的peak-to-peak deviation 峰峰偏移phase modulation index 调相指数frequency modulation index 调频指数sinusoida 正弦的superposition 重叠,叠加原理approximation 接近,近似值sideband 边带multiplier 乘数,乘法器narrowband frequency modulation(NBFM)窄带频率调制wideband frequency modulation(WBFM)宽带频率调制frequency multiplication 倍频limiter 限幅器voltage-controlled-oscillator( V OC)压控振荡器incorporate合并混合PLL(phase locked loop) 锁相环frequency divider 分频器tolerance 耐性容限power spectral density(PSD)功率谱密度probability density function(PDF)概率密度函数intuitive直觉的viewpoint 观点emphasis加重preemphasis 预加重deemphasis去加重boost升压,attenuate 减弱信号,衰减longitudinalpotential位差,势差balun 巴伦,平衡—不平衡变压器electrostatic shield 静电屏蔽ribbon cable 带状传输线coaxial cable 同轴电缆open-wire 明线insulated 绝缘的,隔热的sheath 阳极,屏极stray capacitance 寄生电容杂散电容spacer 逆电流器dielectric 电介质绝缘体susceptible 易受影响的pick-up 获得polyethylene聚乙烯permittivity 介电常数reflectometry反射计impairment 损害,损伤echo 回声,回波prependicular 垂直的transponder 微型转发器vacuum 真空encounter 遭遇遇到infrared 红外线ultraviolet 紫外线refraction 折射diffract 衍射interference 干涉collide 碰撞penetrate 穿透渗透curve 曲线弯曲diffuse 漫射散开redistribution 重新分配opaque 不透明物phenomenon 现象wavelet小波finite 有限的simultaneously同时的polarization偏振极化negligible可以忽略的conductivity 传导性传导率induce感应navigation导航curvature曲率troposphere对流层ionize电离molecule 分子exert 施加vibrate 震动equivalent相当的ionization离子化nonuniform不均匀的stratified分层的parabolic抛物线的focal焦点resonance谐振共振dipole双极子偶极子mast天线竿triode 三极真空管klystron调速管magnetron磁控管radiotelephone 无线电话elliptically椭圆形的feedpoint馈点isotropic等方性的reciproal互易的beamwidth波束宽度omnidirectional全方向的parasitic寄生的concave凹的inphase同相的reradiated在辐射convergent汇聚性的convex凸的broadside侧面的crisscross十字形交叉power splitter 功率分配器dielectric电介质绝缘体boundary边界photophone光电话impurity杂质混杂物megabit百万兆位dispersion色散pulsing脉冲调制repester转发器regenerator再生器photodetector光电探测器threshold阀值,门限timing时序thermoelectric电热的splic接合cooler冷却器packaging封装adapter适配器jumper跳线overload超过负荷multiplexer多路复用器demultiplexer多路信号分离器doped 掺杂质的very large integration(VLSI)超大规模集成电路digital signal processing(DSP)数字信号处理noise immunity抗干扰度encryption加密programmable可编程的multipath and fading多径衰减power efficiency功率效率bandwidth efficiency带宽效率fidelity保真度pulse-width 脉冲宽度throughput吞吐量non-fading channel无衰落信道multimum-shift-keyed(MSK)最小位移键控on-off keying(OOK)开关键控unipolar 单极性的binary phase-shift keying(BPSK)二进制相移键控mark frequency传号频率space frequency空号频率premodulation预调制cosine-rolloff filter余弦滚降滤波器pilot carrier导频载波digital modulation index数字调制指数null-to-null bandwidth零点-零点带宽coherent相干检波ambiguity含糊differential差分编码integrate-and-dump matched filter积分清楚匹配滤波器digital-to-analog converter(DAC) 数模转换器offset 偏移量wavelength-division multiplexing(WDM)波分复用dense-WDM密集波分复用end-fire-array 端射阵phased array 相控阵inpedence matcher 阻抗匹配器erbium-doped fiber amplifiers 掺铒光纤放大器binary-coded 二进制编码的mainframe 主机,大型机interconnect 使互相连接information highway 信息高速公路indefinitely 不确定的facility 容易,便利,设备,工具secondary 次要的,二级的,第二的peripheral 外围的,外围设备data terminal equipment(DTE) 数据终端设备data conmunications equipment(DCE)数据通信设备vice versa 反之亦然serial 串行的parallel 并行的host主机topology 拓扑,布局,mesh 网孔,网套,陷阱citizens band 居民频带syntax 语法,句子结构interrogation 审问,问号American Standard Code for Information Interchange (ASCII) 美国信息交换标准码Extended Binary-Code Decimal Interchange Code (EBCDIC) 扩充的二-十进制交换码teletype code 电传打字机电码least significant bit(LSB) 最低有效位most significant bit(MSB) 最高有效位partity 同等,平等,奇偶校验error control 差错控制error detection 检错error correction 纠错echoplex 回送checksum 校验和cyclic redundancy checking(CRC) 循环冗余检查backspace 退后一格,退格erroneous 错误的,不正确的circuitry 电线,线路hex 十六进制polynomial 多项式的symbol substitution 符号替换selective retransmission 选择性重传forward error correction 前向纠错ingtegrity 正直,诚实,完整性turnaround 回车场,转变,转向prior 在先,居先Hamming code 汉明码electronic mail 电子邮件handset 电话听筒,手机,手持机cellular phone 便携式电话,移动电话set-top TV box 电视机顶盒telephony 电话学,电话技术conversation 会话,交谈circuit switching 电路交换mechanical 机械的,呆板的bit stream 位流,比特流interface 分界面,界面,接口instruction 指令common channel signaling 公共信道信令trunk 干线中继线路subscriber telephone 电话用户digital carrier system 数字载波系统accommodate 供应,调节,调和deviate 异化,越轨,偏离nominal 名义上得Integrated Services Digital Network(ISDN)综合业务数字网bidirectional 双向的full-duplex 全双工的facsimile 摹写,传真remote monitoring 远程监控videotext 可视图文videophone 可视电话attenuation 变薄,变细,衰减Asymmetric Digital Subscriber Line(ADSL)非对称用户数字线protocol 草案,协议character at a time 每次传送一个字符cross-talk 他处传来的干扰,串话severe 严厉的,剧烈的,严重的modem 调制解调器synchronous transmission 同步传输SDLC(Synchronous Data Link Control)同步数据链路控制HDLC(High-Level Data Link Control)高级数据链路控制LAPB 平衡型链路访问规程packet 包装,信息包preamble 前言,序,前导信号self-synchronizing code 自同步码store-and-forward packet-switching存储转发分组交换point-to-point 点对点intermittent 间歇的,断断续续的statistical multiplexing 统计复用Ethernet 以太网Chip 碎片,芯片,筹码LAN(Local Area Network) 局域网,本地网WAN(Wide Area Network) 广域网Asynchronous Transfer Mode(ATM)异步传输模式cell 蜂窝,信源VCI 虚通路标识optical fiber 光纤cable television 有线电视,电缆电视Community Antenna Television(CATV)有线电视,公用天线电视obstruction 阻塞,妨碍,障碍物feeder 馈电线,电源线,连接线unidirectional 单向的,单向性的hybrid fiber/coaxial(HFC) 光缆与同轴电缆混合网fiber-to-the-curb(FTTC) 光纤到路边cable modem 电缆调制解调器nonadjacent 不临近的,不毗连的turn over 翻身,折腾,反复考虑Peer-to-Peer 对等网络wireline 有线线路toehold 排除障碍的方法notebook 笔记薄,笔记本palm-sized computer 掌上电脑backbone 脊椎,中枢,支柱,勇气terabit兆兆位Web 环球网bandwidth 带宽channel 信道,频道delay 延迟,时延hierarchy 层次结构pitch 音调substantially 充分的voiced 有声的,浊音的quasi-stationary 拟稳态的formant 共振峰,构形成分resonance 共鸣,回声,反响,谐振vocal track 声带vocoder 声码器VF(V oice Frequency) 话音频率adaptive subband coding 自适应自带编码vector quantization 矢量量化code excited linear prediction 码激励线性预测vector-sum excited linear prediction矢量和激励线性预测analysis-by-synthesis technique 分析合成技术codebook 码本best match 最佳匹配codec 多媒体数字信号编解码器probability distribution 概率分布autocorrelation 自相关successive 继承的,连续的unvoiced清音的quasiperiodicity 准周期性bandlimited 带限的time-discietized 时间离散化reconstruct 重建,改造,推想monotonically decreasing function 单调递减函数exponential 指数的,幂数的Gaussian distribution 高斯分布,正态分布variance 方差manifestation 显示,表现,示威运动coding gain 编码增益spectral flatness measure(SFM)谱平坦性测度geometric mean 几何平均redundancy冗余cordless 不用电线的,无绳preferentially 优待的perception 理解,感知,感觉harmonic 谐和的,和声的,谐波,谐函数sub-band coding(SBC) 子带编码block transform coding 块变换编码bandpass 带通band-splitting 子带分解articulation index 传声准率portion 一部分,一分in tune 和调子convolution 卷积,卷积积分multiplex 多路传输,多路复用alias 混淆,折叠quadrature mirror filters(QMF) 正交镜像滤波器latecy 等待时间,延迟cellular telephone system 蜂窝(移动)电话系统performance 性能,能力signal-to-noise radio 信噪比mean square error(MSE) 均方误差weighted 加权的diagnostic rhyme test(DRT) 押韵诊断测试diagnostic acceptability measure(DAM)接受能力诊断测试mean opinion score(MOS)平均主观评分inherently 天地性,固有性spectrum 频谱utilization 利用intrastate 周内的haul 托运距离noncoherent 非相干的simultaneously 同时的deviator 偏差器,致偏器scheme 安排,配置,计划,方案uniform 统一的,相同的,一致的,均衡的eventually 最后,终于mixer 混频器heterodyning 外差法,外差作用demodulator 解调器convey 搬运传达destination 目的地phenomenal 显著的telemetry 遥感勘测,自动测量记录传导diminishing 逐渐缩小的accommodate 供给,容纳investigate 调查,研究avenue 方法途径prohibitive 禁止的,抑制的adequate 适当的,足够的quantize 使量子化,量化discrete 不连续的,离散的aptly 适当的,适宜的lean 倾向,偏向designator 指示者,指定者so-called 所谓的,号称的astronomical 天文学的,天文celestial body 天体payload 有效载荷military 军事的,军用的subscriber 订户,签署者geostationary 与地球的相对位置之不变的aeronautical 航空学的roughly 概略的obstacle 障碍,障碍物govern 统治,支配constituent 要素hub 网络集线器,网络中心margin 极限,富余architecture 体系结构platform 平台cruise 巡航gateway 网关altenatively 作为选择,二者选一overlap 与..交叠implement 实现,执行hybrid 混合的latitude 纬度,地区guarantee 保证,担保nowadays 现今,现在sophisticated 高度发展的,精密复杂的coordinate 协调,调整,整理equatorial 近赤道的,赤道的distributed 分布式的stationary 固定的deploy 配置isotropic各向同性的specialise 专门研究,深入miche 放在适当的位置marketability 可销售性crosspolarization 交叉极化furthermore 此外,而且critical 紧要的,关键性的,临界的majority 多数,大半degrading 丧失体面的,可耻的,不名誉的coding 编码intermediate 中间的alongside 并排地regulate 管制,控制budget 预算degrade 降低,降级,退化compensate 补偿,付报酬subdivide 再分,细分feasible 切实可行的burst 突发,脉冲periodic 周期的,定期的synchronize 同步recovery 恢复expansion 扩充,扩展vital 至关重要的,必须得preassign 预先指定,预先分配reservation 预定,预约dynamic 动态的eliminate 消除,去除uncoordinated 不协调的collision 碰撞,冲突implementation 执行,实现retransmission 重发,转播optimal 最佳的,最理想的corresponding 相应的yielding 出产,生长,生产incremental 增加的magnitude 大小,数量,模algorithm 算法encoding 编码concatenation 串联,连锁node 节点tolerant 容许的literally 逐字的antijam 抗干扰contiguous 临近的,邻接的authentication 证明,鉴定adequately 充分的eavesdropper 偷听者pseudorandom 伪随机的simultaneously 同时的excel优秀penalty 损失unpredictable 不可预知的correlation 相互关系,相关性clutter混乱mobile telephone service 移动电话业务monster 怪物,妖怪,巨人methodology 一套方法provoke 激怒,挑拨,煽动,驱使regardless 不管,不顾terminology 术语学transceiver 无线电收发机,收发器pedestrian 步行者,徒步的,通俗的base station 基站scramble 扰频municipal 市政的,地方自治的trunking 中继census 人口普查hexagonal 六角形,六边形的honeycomb 蜂巢,蜂窝in accordance with 与..一致,依照macrocell 宏单元,宏小区radius 半径,范围,界限microcell 微小区virtue 德行,美德,贞操,优点,功效,效力mild 温和的,温柔的,适度的overlay 覆盖,microcellular 微小区intriguing 迷人的,有迷惑力的infrastructure 下部结构,基础组织splitting 分裂,裂解sector 使分成部分,扇形扫描overhead 在头上的,高架的handoff 手递手传递,移交metropolitan 首都的,大城市United States Digital Cellular(USDC)美国数字蜂窝系统compatible 谐调的,一致的,兼容的reuse 再使用time-division multiple accessing(TDMA)时分多址time slot 时间空档,时隙geographical 地理学得,地理的interleaving 交叉,交错threeflod 三倍encrypt 加密decrypt 解释明白,解密safeguard 维护,捍卫,eavesdropping 偷听channelization通信波道的选择coed-division multiple accession(CDMA) 码分多址Pilot 飞行员differentiate 区分,区别,微分spread-spectrum 扩频coherent 黏在一起的,相干的graceful 优美的,雅致的,适度的real time 实时asynchronous 不同时的,异步的重点词汇。