：hannel Allocation and Relay Selection Scheme in Relay-Based Networks
电子信息工程专业英语词汇(精华整理版)
transistor n 晶体管diode n 二极管semiconductor n 半导体resistor n 电阻器capacitor n 电容器alternating adj 交互的amplifier n 扩音器，放大器integrated circuit 集成电路linear time invariant systems 线性时不变系统voltage n 电压，伏特数tolerance n 公差；宽容；容忍condenser n 电容器；冷凝器dielectric n 绝缘体；电解质electromagnetic adj 电磁的adj 非传导性的deflection n偏斜；偏转；偏差linear device 线性器件the insulation resistance 绝缘电阻anode n 阳极，正极cathode n 阴极breakdown n 故障；崩溃terminal n 终点站；终端，接线端emitter n 发射器collect v 收集，集聚，集中insulator n 绝缘体，绝热器oscilloscope n 示波镜；示波器gain n 增益，放大倍数forward biased 正向偏置reverse biased 反向偏置P-N junction PN结MOS（metal-oxide semiconductor）金属氧化物半导体enhancement and exhausted 增强型和耗尽型integrated circuits 集成电路analog n 模拟digital adj 数字的，数位的horizontal adj, 水平的，地平线的vertical adj 垂直的，顶点的amplitude n 振幅，广阔，丰富attenuation n衰减；变薄；稀薄化multimeter n 万用表frequency n 频率，周率the cathode-ray tube 阴极射线管dual-trace oscilloscope 双踪示波器signal generating device 信号发生器peak-to-peak output voltage 输出电压峰峰值sine wave 正弦波triangle wave 三角波square wave 方波amplifier 放大器，扩音器oscillator n 振荡器feedback n 反馈，回应phase n 相，阶段，状态filter n 滤波器，过滤器rectifier n整流器；纠正者band-stop filter 带阻滤波器band-pass filter 带通滤波器decimal adj 十进制的，小数的hexadecimal adj/n十六进制的binary adj 二进制的；二元的octal adj 八进制的domain n 域；领域code n代码，密码，编码v编码the Fourier transform 傅里叶变换Fast Fourier Transform 快速傅里叶变换microcontroller n 微处理器；微控制器assembly language instrucions n 汇编语言指令chip n 芯片，碎片modular adj 模块化的；模数的sensor n 传感器plug vt堵，塞，插上n塞子，插头，插销coaxial adj 同轴的，共轴的fiber n 光纤relay contact 继电接触器single instruction programmer 单指令编程器dedicated manufactures programming unit 专供制造厂用的编程单元beam n （光线的）束，柱，梁polarize v（使）偏振，（使）极化Cathode Ray Tube（CRT）阴极射线管neuron n神经元；神经细胞fuzzy adj 模糊的Artificial Intelligence Shell 人工智能外壳程序Expert Systems 专家系统Artificial Intelligence 人工智能Perceptive Systems 感知系统neural network 神经网络fuzzy logic 模糊逻辑intelligent agent 智能代理electromagnetic adj 电磁的coaxial adj 同轴的，共轴的microwave n 微波charge v充电，使充电insulator n 绝缘体，绝缘物nonconductive adj非导体的，绝缘的antenna n天线；触角modeling n建模，造型simulation n 仿真；模拟prototype n 原型array n 排队，编队vector n 向量，矢量wavelet n 微波，小浪sine 正弦cosine 余弦inverse adj倒转的，反转的n反面；相反v倒转high-performance 高精确性，高性能two-dimensional 二维的；缺乏深度的three-dimensional 三维的；立体的；真实的object-oriented programming面向对象的程序设计spectral adj 光谱的attenuation n衰减；变薄；稀释distortion n 失真，扭曲，变形wavelength n 波长refractive adj 折射的ATM 异步传输模式Asynchronous TransferModeADSL非对称用户数字线Asymmetric digitalsubscriber lineVDSL甚高速数字用户线very high data ratedigital subscriber lineHDSL高速数据用户线high rate digitalsubscriber lineFDMA频分多址(Frequency Division MultipleAccess)TDMA时分多址(Time Division Multiple Access)CDMA同步码分多址方式(Code Division MultipleAccess)WCDMA宽带码分多址移动通信系统(WidebandCode Division Multiple Access)TD-SCDMA(Time Division Synchronous CodeDivision Multiple Access)时分同步码分多址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IP/TCP(internet protocol /transfer ControlProtocol)网络传输控制协议ITU (International Telecommunication Union)国际电信联盟ISO国际标准化组织（InternationalStandardization Organization）；OSI开放式系统互联参考模型（Open SystemInterconnect）GSM全球移动通信系统（Global System forMobile Communications）GPRS通用分组无线业务(General Packet RadioService)FDD(frequency division duplex)频分双工TDD(time division duplex)时分双工VPI虚路径标识符（Virtual Path Identifier）；ISDN（Integrated Services Digital Network）综合业务数字网IDN综合数字网（integrated digital network）HDTV (high definition television)高清晰度电视DCT(Discrete Cosine Transform)离散余弦变换VCI(virtual circuit address)虚通路标识MAN城域网Metropolitan area networksLAN局域网local area networkWAN广域网wide area network同步时分复用STDM Synchronous Time DivisionMultiplexing统计时分复用STDM Statistical Time DivisionMultiplexing单工传输simplex transmission半双工传输half-duplex transmission全双工传输full-duplex transmission交换矩阵Switching Matrix电路交换circuit switching分组交换packet switching报文交换message switching奇偶校验parity checking循环冗余校验CRC Cyclic Redundancy Check虚过滤Virtual filter数字滤波digital filtering伪随机比特Quasi Random Bit带宽分配Bandwidth allocation信源information source信宿destination数字化digitalize数字传输技术Digital transmission technology灰度图像Grey scale images灰度级Grey scale level幅度谱Magnitude spectrum相位谱Phase spectrum频谱frequency spectrum智能设备Smart Device软切换Soft handover硬切换Hard Handover相干检测Coherent detection边缘检测Edge detection冲突检测collision detection业务集合service integration业务分离/综合service separation/ integration网络集合network integration环形网Ring networks令牌环网Token Ring network网络终端Network Terminal用户终端user terminal用户电路line circuit电路利用率channel utilization（通道利用率）相关性coherence相干解调coherent demodulation数字图像压缩digital image compression图像编码image encoding有损/无损压缩lossy/lossless compression解压decompression呼叫控制Call Control误差控制error control存储程序控制stored program control存储转发方式store-and-forward manner语音\视频传输voice\video transmission视频点播video-on-demand(VOD)会议电视Video Conference有线电视cable television量化quantization吞吐量throughput话务量traffic多径分集Multipath diversity多媒体通信MDM Multimedia Communication多址干扰Multiple Access Interference人机交互man machine interface交互式会话Conversational interaction路由算法Routing Algorithm目标识别Object recognition话音变换Voice transform中继线trunk line传输时延transmission delay远程监控remote monitoring光链路optical link拓扑结构Topology均方根root mean squarewhatsoever=whatever 0switchboard (电话)交换台bipolar （电子）双极的premise （复）房屋，前提cursor (计算机尺的)游标，指导的elapse （时间）经过，消失vaporize （使）蒸发subsystem （系统的）分部，子系统，辅助系统metallic （像）金属的，含金属的，（声音）刺耳的dispatch （迅速）派遣，急件consensus （意见）一致，同意deadline （最后）期限，截止时间tomographic X线体层摄像的alas 唉，哎呀cluster 把…集成一束，一组，一簇，一串，一群encyclopedia 百科全书millionfold 百万倍的semiconductor 半导体radius 半径范围，半径，径向射线half-duplex transmission 半双工传输accompaniment 伴随物，附属物reservation 保留，预定quotation 报价单，行情报告，引语memorandum 备忘录redundancy 备用be viewed as 被看作…be regards as 被认为是as such 本身；照此；以这种资格textual 本文的，正文的verge 边界variation 变化，变量conversion 变化，转化identity 标识；标志criterion 标准，准则in parallel on 并联到，合并到juxtapose 并置，并列dialing pulse 拨号脉冲wave-guide 波导wavelength division multiplexed 波分复用baud rate 波特率playback 播放（录音带，唱片）no greater than 不大于update 不断改进，使…适合新的要求，更新asymmetric 不对称的irrespective 不考虑的，不顾的inevitably 不可避免的inevitable 不可避免的，不可逃避的，必定的segment 部分abrasion 擦伤，磨损deploy 采用，利用，推广应用take the form of 采用…的形式parameter 参数，参量layer 层dope 掺杂FET(field effect transistors) 场效应管audio recording 唱片ultra-high-frequency(UHF) 超高频in excess of 超过in excess of 超过hypertext 超文本ingredient 成分，因素ingredient 成分，组成部分，要素metropolitan-area network(WAN) 城域网metropolitan area network(WAN) 城域网，城市网络congestion 充满，拥挤，阻塞collision 冲突extractive 抽出；释放出extract 抽取，取出，分离lease 出租，租约，租界期限，租界物pass on 传递，切换transmission 传输facsimile 传真innovative=innovatory 创新的，富有革新精神的track 磁道impetus 促进，激励cluster 簇stored-program control(SPC) 存储程序控制a large number of 大量的peal 大声响，发出supersede 代替supplant 代替，取代out-of-band signaling 带外信号simplex transmission 单工传输monochromatic 单色的，单色光的，黑白的ballistic 弹道的，射击的，冲击的conductor 导体hierarchy 等级制度，层次infrastructure 底层结构，基础结构geographic 地理的，地区的geographically 地理上GIS(ground instrumentation system) 地面测量系统ground station 地面站earth orbit 地球轨道extraterrestrial 地球外的，地球大气圈外的Land-sat 地球资源卫星rug 地毯，毯子ignite 点火，点燃，使兴奋electromagnetic 电磁的inductive 电感arc 电弧telephony 电话（学），通话dielectric 电介质，绝缘材料；电解质的，绝缘的capacitor 电容telecommunication 电信，无线电通讯scenario 电影剧本，方案modem pool 调制解调器（存储）池superimposing 叠加，重叠pin 钉住，扣住，抓住customize 定做，定制monolithic 独立的，完全统一的aluminize 镀铝strategic 对全局有重要意义的，战略的substantial 多的，大的，实际上的multi-path fading 多径衰落multi-path 多路，多途径；多路的，多途径的multi-access 多路存取，多路进入multiplex 多路复用multiplex 多路复用的degradation 恶化，降级dioxide 二氧化碳LED(light-emitting-diode) 发光二极管evolution 发展，展开，渐进feedback 反馈，回授dimension 范围，方向，维，元scenario 方案scenario 方案，电影剧本amplifer 放大器noninvasive 非侵略的，非侵害的tariff 费率，关税率；对…征税distributed functional plane(DFP) 分布功能平面DQDB(distributed queue dual bus) 分布式队列双总线hierarchy 分层，层次partition 分成segmentation 分割interface 分界面，接口asunder 分开地，分离地detached 分离的，分开的，孤立的dispense 分配allocate 分配，配给；配给物centigrade 分为百度的，百分度的，摄氏温度的fractal 分形molecule 分子，微小，些微cellular 蜂窝状的cellular 蜂窝状的，格形的，多孔的auxiliary storage(also called secondary storage)辅助存储器decay 腐烂，衰减，衰退negative 负电vicinity 附近，邻近vicinity 附近地区，近处sophisticated 复杂的，高级的，现代化的high-frequency(HF) 高频high definition television 高清晰度电视chromium 铬annotate 给…作注解in terms of 根据，按照disclosure 公布，企业决算公开public network 公用网functionality 功能，功能度mercury 汞resonator 共鸣器resonance 共振whimsical 古怪的，反复无常的administration 管理，经营cursor 光标（显示器），游标，指针optical computer 光计算机photoconductor 光敏电阻optical disks 光盘optically 光学地，光地wide-area networks 广域网specification 规范，说明书silicon 硅the international telecommunication union(ITU)国际电信联盟excess 过剩obsolete 过时的，废弃的maritime 海事的synthetic 合成的，人造的，综合的synthetic 合成的，综合性的rational 合乎理性的rationalization 合理化streamline 合理化，理顺infrared 红外线的，红外线skepticism 怀疑论ring network 环形网hybrid 混合物counterpart 伙伴，副本，对应物electromechanical 机电的，电动机械的Robot 机器人Robotics 机器人技术，机器人学accumulation 积累infrastructure 基础，基础结构substrate 基质，底质upheaval 激变，剧变compact disc 激光磁盘（CD）concentrator 集中器，集线器centrex system 集中式用户交换功能系统converge on 集中于，聚集在…上lumped element 集总元件CAI(computer-aided instruction) 计算机辅助教学computer-integrated manufacturing(CIM) 计算机集成制造computer mediated communication(CMC) 计算机中介通信record 记录register 记录器，寄存器expedite 加快，促进weight 加权accelerate 加速，加快，促进categorize 加以类别，分类in addition 加之，又，另外hypothetical 假设的rigidly 坚硬的，僵硬的compatibility 兼容性，相容性surveillance 监视surveillance 监视retrieval 检索，（可）补救verification 检验simplicity 简单，简明film 胶片，薄膜take over 接管，接任ruggedness 结实threshold 界限，临界值with the aid of 借助于，用，通过wire line 金属线路，有线线路coherent 紧凑的，表达清楚的，粘附的，相干的compact 紧密的approximation 近似undertake 进行，从事transistor 晶体管elaborate 精心制作的，细心完成的，周密安排的vigilant 警戒的，警惕的alcohol 酒精，酒local area networks(LANs) 局域网local-area networks(LANs) 局域网drama 剧本，戏剧，戏剧的演出focus on 聚集在，集中于，注视insulator 绝缘root mean square 均方根uniform 均匀的open-system-interconnection(OSI) 开放系统互连expire 开始无效，满期，终止immunity 抗扰，免除，免疫性take…into account 考虑，重视…programmable industrial automation 可编程工业自动化demountable 可拆卸的tunable 可调的reliable 可靠be likely to 可能，大约，像要videotex video 可视图文电视negligible 可以忽略的aerial 空气的，空中的，无形的，虚幻的；天线broadband 宽（频）带pervasive 扩大的，渗透的tensile 拉力的，张力的romanticism 浪漫精神，浪漫主义discrete 离散，不连续ion 离子force 力量；力stereophonic 立体声的continuum 连续统一体，连续统，闭联集smart 灵巧的；精明的；洒脱的token 令牌on the other hand 另一方面hexagonal 六边形的，六角形的hexagon 六角形，六边形monopoly 垄断，专利video-clip 录像剪辑aluminum 铝pebble 卵石，水晶透镜forum 论坛，讨论会logical relationships 逻辑关系code book 码本pulse code modulation(PCM) 脉冲编码调制roam 漫步，漫游bps(bits per second) 每秒钟传输的比特ZIP codes 美国邮区划分的五位编码susceptible(to) 敏感的，易受…的analog 模拟，模拟量pattern recognition模式识别bibliographic 目录的，文献的neodymium 钕the european telecommunicationstandardization institute(ETSI) 欧洲电信标准局coordinate 配合的，协调的；使配合，调整ratify 批准，认可bias 偏差；偏置deviate 偏离，与…不同spectrum 频谱come into play 其作用entrepreneurial 企业的heuristic methods 启发式方法play a …role(part) 起…作用stem from 起源于；由…发生organic 器官的，有机的，组织的hypothesis 前提front-end 前置，前级potential 潜势的，潜力的intensity 强度coincidence 巧合，吻合，一致scalpel 轻便小刀，解剖刀inventory 清单，报表spherical 球的，球形的distinguish 区别，辨别succumb 屈服，屈从，死global functional plane(GFP) 全局功能平面full-duplex transmission 全双工传输hologram 全息照相，全息图deficiency 缺乏thermonuclear 热核的artifact 人工制品AI(artificial intelligence) 人工智能fusion 熔解，熔化diskettes(also called floppy disk) 软盘sector 扇区entropy 熵uplink 上行链路arsenic 砷neural network 神经网络very-high-frequency(VHF) 甚高频upgrade 升级distortion 失真，畸变identification 识别，鉴定，验明pragmatic 实际的implementation 实施，实现，执行，敷设entity 实体，存在vector quantification 矢量量化mislead 使…误解，给…错误印象，引错vex 使烦恼，使恼火defy 使落空facilitate 使容易，促进retina 视网膜compatible 适合的，兼容的transceiver 收发两用机authorize 授权，委托，允许data security 数据安全性data independence 数据独立data management 数据管理database 数据库database management system(DBMS) 数据库管理信息系统database transaction 数据库事务data integrity 数据完整性，数据一致性attenuation 衰减fading 衰落，衰减，消失dual 双的，二重的transient 瞬时的deterministic 宿命的，确定的algorithm 算法dissipation 损耗carbon 碳diabetes 糖尿病cumbersome 讨厌的，麻烦的，笨重的razor 剃刀，剃go by the name of 通称，普通叫做commucation session 通信会话traffic 通信业务（量）synchronous transmission 同步传输concurrent 同时发生的，共存的simultaneous 同时发生的，同时做的simultaneous 同时发生的，一齐的coaxial 同轴的copper 铜statistical 统计的，统计学的dominate 统治，支配invest in 投资perspective 透视，角度，远景graphics 图示，图解pictorial 图像的coating 涂层，层deduce 推理reasoning strategies 推理策略inference engine 推理机topology 拓扑结构heterodyne 外差法的peripheral 外界的，外部的，周围的gateway 网关hazardous 危险的microwave 微波（的）microprocessor 微处理机，微处理器microelectronic 微电子nuance 微小的差别（色彩等）encompass 围绕，包围，造成，设法做到maintenance 维护；保持；维修satellite communication 卫星通信satellite network 卫星网络transceiver 无线电收发信机radio-relay transmission 无线电中继传输without any doubt 无疑passive satellite 无源卫星sparse 稀少的，稀疏的downlink 下行链路precursor 先驱，前任visualization 显像feasibility 现实性，可行性linearity 线性度constrain 限制，约束，制约considerable 相当的，重要的geo-stationary 相对地面静止by contrast 相反，而，对比起来coorelation 相关性mutual 相互的mutually 相互的，共同的interconnect 相互连接，互连one after the other 相继，依次minicomputer 小型计算机protocol 协议，草案protocol 协议，规约，规程psycho-acoustic 心理（精神）听觉的；传音的channelization 信道化，通信信道选择run length encoding 行程编码groom 修饰，准备virtual ISDN 虚拟ISDNmultitude 许多，大批，大量whirl 旋转preference 选择，喜欢avalanche 雪崩pursue 寻求，从事interrogation 询问dumb 哑的，不说话的，无声的subcategory 亚类，子种类，子范畴orbital 眼眶；轨道oxygen 氧气，氧元素service switching and control points(SSCPs) 业务交换控制点service control points(SCPs) 业务控制点service control function(SCF) 业务控制功能in concert 一致，一齐handover 移交，越区切换at a rate of 以……的速率in the form of 以…的形式base on…以…为基础yttrium 钇（稀有金属，符号Y）asynchronous transmission 异步传输asynchronous 异步的exceptional 异常的，特殊的voice-grade 音频级indium 铟give rise to 引起，使产生cryptic 隐义的，秘密的hard disk 硬盘hard automation 硬自动化by means of 用，依靠equip with 用…装备subscriber 用户telex 用户电报PBX(private branch exchange) 用户小交换机或专用交换机be called upon to 用来…，（被）要求…superiority 优势predominance 优势，显著active satellite 有源卫星in comparison with 与…比较comparable to 与…可比preliminary 预备的，初步的premonition 预感，预兆nucleus 原子核valence 原子价circumference 圆周，周围teleprocessing 远程信息处理，遥控处理perspective 远景，前途constrain 约束，强迫mobile 运动的，流动的，机动的，装在车上的convey 运输，传递，转换impurity 杂质impurity 杂质，混杂物，不洁，不纯regenerative 再生的improve over 在……基础上改善play important role in 在…中起重要作用in close proximity 在附近，在很近underlying 在下的，基础的in this respect 在这方面entail 遭遇，导致presentation 赠与，图像，呈现，演示narrowband 窄（频）带deploy 展开，使用，推广应用megabit 兆比特germanium 锗positive 正电quadrature 正交orthogonal 正交的quadrature amplitude modulation(QAM) 正交幅度调制on the right track 正在轨道上sustain 支撑，撑住，维持，持续outgrowh 支派；长出；副产品dominate 支配，统治knowledge representation 知识表示knowledge engineering 知识工程knowledge base 知识库in diameter 直径helicopter 直升飞机acronym 只取首字母的缩写词as long as 只要，如果tutorial 指导教师的，指导的coin 制造（新字符），杜撰fabrication 制造，装配；捏造事实proton 质子intelligence 智能，智力，信息intelligent network 智能网intermediate 中间的nucleus(pl.nuclei) 中心，核心neutrons 中子terminal 终端，终端设备overlay 重叠，覆盖，涂覆highlight 重要的部分，焦点charge 主管，看管；承载dominant 主要的，控制的，最有力的cylinder 柱面expert system 专家系统private network 专用网络transition 转变，转换，跃迁relay 转播relay 转播，中继repeater 转发器，中继器pursue 追赶，追踪，追求，继续desktop publish 桌面出版ultraviolet 紫外线的，紫外的；紫外线辐射field 字段vendor 自动售货机，厂商naturally 自然的；天生具备的synthesize 综合，合成integrate 综合，使完全ISDN(intergrated services digital network) 综合业务数字网as a whole 总体上bus network 总线形网crossbar 纵横，交叉impedance 阻抗initial 最初的，开始的optimum 最佳条件appear as 作为…出现A Analog 模拟A/D Analog to Digital 模-数转换AAC Advanced Audio Coding 高级音频编码ABB Automatic Black Balance 自动黑平衡ABC American Broadcasting Company 美国广播公司Automatic Bass Compensation 自动低音补偿Automatic Brightness Control 自动亮度控制ABL Automatic Black Level 自动黑电平ABLC Automatic Brightness LimiterCircuit 自动亮度限制电路ABU Asian Broadcasting Union 亚洲广播联盟(亚广联ABS American Bureau of Standard 美国标准局AC Access Conditions 接入条件Audio Center 音频中心ACA Adjacent Channel Attenuation 邻频道衰减ACC Automatic Centering Control 自动中心控制Automatic Chroma Control 自动色度(增益ACK Automatic Chroma Killer 自动消色器ACP Additive Colour Process 加色法ACS Access Control System 接入控制系统Advanced Communication Service 高级通信业务Area Communication System 区域通信系统ADC Analog to Digital Converter 模-数转换器Automatic Degaussirng Circuit 自动消磁电路ADL Acoustic Delay Line 声延迟线ADS Audio Distribution System 音频分配系统AE Audio Erasing 音频（声音AEF Automatic Editing Function 自动编辑功能AES Audio Engineering Society 音频工程协会AF Audio Frequency 音频AFA Audio Frequency Amplifier 音频放大器AFC Automatic Frequency Coder 音频编码器Automatic Frequency Control 自动频率控制AFT Automatic Fine Tuning 自动微调Automatic Frequency Track 自动频率跟踪Automatic Frequency Trim 自动额率微调AGC Automatic Gain Control 自动增益控制AI Artificial Intelligence 人工智能ALM Audio-Level Meter 音频电平表AM Amplitude Modulation 调幅AMS Automatic Music Sensor 自动音乐传感装置ANC Automatic Noise Canceller 自动噪声消除器ANT ANTenna 天线AO Analog Output 模拟输出APS Automatic Program Search 自动节目搜索APPS Automatic Program Pause System自动节目暂停系统APSS Automatic Program Search System自动节目搜索系统AR Audio Response 音频响应ARC Automatic Remote Control 自动遥控ASCII American Standard Code forInformation Interchange 美国信息交换标准AST Automatic Scanning Tracking 自动扫描跟踪ATC Automatic Timing Control 自动定时控制Automatic Tone Correction 自动音频校正ATM Asynchronous Transfer Mode 异步传输模式ATF Automatic Track Finding 自动寻迹ATS Automatic Test System 自动测试系统ATSC Advanced Television SystemsCommittee （美国高级电视制式委员会）***C Automatic Volume Control 自动音量控制***R Automatic Voltage Regulator 自动稳压器AWB Automatic White Balance 自动白平衡AZC Automatic Zooming Control 自动变焦控制AZS Automatic Zero Setting 自动调零BA Branch Amplifier 分支放大器Buffer Amplifier 缓冲放大器BAC Binary-Analog Conversion 二进制模拟转换BB Black Burst 黑场信号BBC British Broadcasting Corporation 英国广播公司BBI Beijing Broadcasting Institute 北京广播学院BC Binary Code 二进制码Balanced Current 平衡电流Broadcast Control 广播控制BCT Bandwidth Compression Technique 带宽压缩技术BDB Bi-directional Data Bus 双向数据总线BER Basic Encoding Rules 基本编码规则Bit Error Rate 比特误码率BF Burst Flag 色同步旗脉冲BFA Bare Fiber Adapter 裸光纤适配器Brillouin Fiber Amplifier 布里渊光纤放大器BGM Background Music 背景音乐BIOS Basic Input／Output System 基本输入输出系统B-ISDN Broadband-ISDN 宽带综合业务数据网BIU Basic Information Unit 基本信息单元Bus Interface Unit 总线接口单元BM Bi-phase Modulation 双相调制BML Business Management Layer 商务管理层BN Backbone Network 主干网BNT Broadband Network Termination 宽带网络终端设备BO Bus Out 总线输出BPG Basic Pulse Generator 基准脉冲发生器BPS Band Pitch Shift 分频段变调节器BSI British Standard Institute 英国标准学会BSS Broadcast Satellite Service 广播卫星业务BT Block Terminal 分线盒、分组终端British Telecom 英国电信BTA Broadband Terminal Adapter 宽带终端适配器Broadcasting Technology Association (日本BTL Balanced Transformer-Less 桥式推挽放大电路BTS Broadcast Technical Standard 广播技术标准BTU Basic Transmission Unit 基本传输单元BVU Broadcasting Video Unit 广播视频型(一种3/4英寸带录像机记录格式BW BandWidth 带宽BWTV Black and White Television 黑白电视CA Conditional Access 条件接收CAC Conditional Access Control 条件接收控制CAL Continuity Accept Limit 连续性接受极限CAS Conditional Access System 条件接收系统Conditional Access Sub-system 条件接收子系统CATV Cable Television 有线电视，电缆电视Community Antenna Television 共用天线电视C*** Constant Angular Velocity 恒角速度CBC Canadian Broadcasting Corporation 加拿大广播公司CBS Columbia Broadcasting System （美国哥伦比亚广播公司CC Concentric Cable 同轴电缆CCG Chinese Character Generator 中文字幕发生器CCIR International Radio Consultative Committee 国际无线电咨询委员会CCITT International Telegraph andTelephone ConsultativeCommittee 国际电话电报咨询委员会CCR Central Control Room 中心控制室CCTV China Central Television 中国中央电视台Close-Circuit Television 闭路电视CCS Center Central System 中心控制系统CCU Camera Control Unit 摄像机控制器CCW Counter Clock-Wise 反时针方向CD Compact Disc 激光唱片CDA Current Dumping Amplifier 电流放大器CD-E Compact Disc Erasable 可抹式激光唱片CDFM Compact Disc 光盘文件管理(程序CDPG Compact-Disc Plus Graphic 带有静止图像的CD唱盘CD-ROM Compact Disc-Read OnlyMemory 只读式紧凑光盘CETV China Educational Television 中国教育电视台CF Color Framing 彩色成帧CGA Color Graphics Adapter 彩色图形(显示卡CI Common Interface 通用接口CGA Color Graphics Adapter 彩色图形(显示卡CI Common Interface 通用接口CIE Chinese Institute of Electronics 中国电子学会CII China Information Infrastructure 中国信息基础设施CIF Common Intermediate Format 通用中间格式CIS Chinese Industrial Standard 中国工业标准CLV Constant Linear Velocity 恒定线速度CM Colour Monitor 彩色监视器CMTS Cable Modem Termination System线缆调制解调器终端系统CNR Carrier-to-Noise Ratio 载噪比CON Console 操纵台Controller 控制器CPB Corporation of Public Broadcasting（美国公共广播公司CPU Central Processing Unit 中央处理单元CRC Cyclic Redundancy Check 循环冗余校验CRCC CRI Cyclic Redundancy Check Code循环冗余校验码CROM China Radio International 中国国际广播电台CRT Control Read Only Memory 控制只读存储器CS Cathode-Ray Tube 阴极射线管CSC Communication Satellite 通信卫星CSS Color Sub-carrier 彩色副载波Center Storage Server 中央存储服务器Content Scrambling System 内容加扰系统CSU Channel Service Unit 信道业务单元CT Color Temperature 色温CTC Cassette Tape Controller 盒式磁带控制器Channel Traffic Control 通道通信量控制Counter Timer Circuit 计数器定时器电路Counter Timer Control 计数器定时器控制CTE Cable Termination Equipment 线缆终端设备Customer Terminal Equipment 用户终端设备CTV Color Television 彩色电视CVD China Video Disc 中国数字视盘CW Carrie Wave 载波DAB Digital Audio Broadcasting 数字音频广播DASH Digital Audio Stationary Head 数字音频静止磁头DAT Digital Audio Tape 数字音频磁带DBMS Data Base Management System 数据库管理系统DBS Direct Broadcast Satellite 直播卫星DCC Digital Compact Cassette 数字小型盒带Dynamic Contrast Control 动态对比度控制DCT Digital Component Technology 数字分量技术Discrete Cosine Transform 离散余弦变换DCTV Digital Color Television 数字彩色电视DD Direct Drive 直接驱动DDC Direct Digital Control 直接数字控制DDE Dynamic Data Exchange 动态数据交换DDM Data Display Monitor 数据显示监视器DES Data Elementary Stream 数据基本码流Data Encryption Standard 美国数据加密标准DF Dispersion Flattened 色散平坦光纤DG Differential Gain 微分增益DI Digital Interface 数字接口DITEC Digital Television Camera 数字电视摄像机DL Delay Line 延时线DLD Dynamic Linear Drive 动态线性驱动DM Delta Modulation 增量调制Digital Modulation 数字调制DMB Digital Multimedia Broadcasting 数字多媒体广播DMC Dynamic Motion Control 动态控制DME Digital Multiple Effect 数字多功能特技DMS Digital Mastering System 数字主系统DN Data Network 数据网络DNG Digital News Gathering 数字新闻采集DNR Digital Noise Reducer 数字式降噪器DOB Data Output Bus 数据输出总线DOCSIS Data Over Cable ServiceInterface Specifications 有线数据传输业务接口规范DOC Drop Out Compensation 失落补偿DOS Disc Operating System 磁盘操作系统DP Differential Phase 微分相位Data Pulse 数据脉冲DPCM Differential Pulse Code Modulation差值脉冲编码调制DPL Dolby Pro Logic 杜比定向逻辑DSB Digital Satellite Broadcasting 数字卫星广播DSC Digital Studio Control 数字演播室控制DSD Dolby Surround Digital 杜比数字环绕声DSE Digital Special Effect 数字特技DSK Down-Stream Key 下游键DSP Digital Signal Processing 数字信号处理Digital Sound Processor 数字声音处理器DSS Digital Satellite System 数字卫星系统DT Digital Technique 数字技术Digital Television 数字电视Data Terminal 数据终端Data Transmission 数据传输DTB Digital Terrestrial Broadcasting 数字地面广播DTBC Digital Time-Base Corrector 数字时基校正器DTC Digital Television Camera 数字电视摄像机DTS Digital Theater System 数字影院系统Digital Tuning System 数字调谐系统Digital Television Standard 数字电视标准DVB Digital Video Broadcasting 数字视频广播DVC Digital Video Compression 数字视频压缩DVE Digital Video Effect 数字视频特技DVS Desktop Video Studio 桌上视频演播DVTR Digital Video Tape Recorder 数字磁带录像机EA Extension Amplifier 延长放大器EB Electron Beam 电子束EBS Emergency Broadcasting System 紧急广播系统EBU European Broadcasting Union 欧洲广播联盟EC Error Correction 误差校正ECN Emergency Communications Network 应急通信网络ECS European Communication Satellite 欧洲通信卫星EDC Error Detection Code 错误检测码EDE Electronic Data Exchange 电子数据交换EDF Erbium-Doped Fiber 掺饵光纤EDFA Erbium-Doped Fiber Amplifier 掺饵光纤放大器EDL Edit Decision List 编辑点清单EDTV Extended Definition Television 扩展清晰度电视EE Error Excepted 允许误差EFM Eight to Fourteen Modulation 8-14调制EFP Electronic Field Production 电子现场节目制作EH Ethernet Hosts 以太网主机EIN Equivalent Input Noise 等效输入噪声EIS Electronic Information System 电子信息系统EISA Extended Industrial Standard Architecture 扩展工业标准总线EL Electro-Luminescent 场致发光EM Error Monitoring 误码监测EN End Node 末端节点ENG Electronic News Gathering 电子新闻采集EOT End of Tape 带尾EP Edit Point 编辑点Error Protocol 错误协议EPG Electronic Program Guides 电子节目指南EPS Emergency Power Supply 应急电源ERP Effective Radiated Power 有效辐射功率ES Elementary Stream 基本码流End System 终端系统ESA European Space Agency 欧洲空间局ETV Education Television 教育电视FA Enhanced Television 增强电视FABM FAS Facial Animation 面部动画FC Fiber Amplifier Booster Module 光纤放大器增强模块Fiber Access System 光纤接入系统Frequency Changer 变频器FCC Fiber Channel 光纤通道FD Film Composer 电影编辑系统Federal Communications Commission 美国联邦通信委员会FDCT Frequency Divider 分频器FDDI FDM Fiber Duct 光纤管道FDP Forward Discrete Cosine Transform 离散余弦正变换FE Fiber Distributed Data Interface 分布式光纤数据接口Frequency-Division Multiplexing 频分复用FF Fiber Distribution Point 光纤分配点FG Front End 前端FH Framing Error 成帧误差FIT Fast Forward 快进FN Frequency Generator 频率发生器FOA Frequency Hopping 跳频FOC Frame-Interline Transfer 帧一行间转移Fiber Node 光纤节点Fiber Optic Amplifier 光纤放大器FOM Fiber Optic Cable 光缆FON Fiber Optic Communications 光纤通信FOS Fiber Optic Coupler 光纤耦合器FOTC Fiber Optic Modem 光纤调制解调器FS Fiber Optic Net 光纤网Factor of Safety 安全系数Fiber Optic Trunk Cable 光缆干线FT Frame Scan 帧扫描Store 帧存储器FTTB Frame Synchro 帧同步机FTTC France Telecom 法国电信Absorber Circuit 吸收电路AC/AC Frequency Converter 交交变频电路AC power control交流电力控制AC Power Controller交流调功电路AC Power Electronic Switch交流电力电子开关Ac Voltage Controller交流调压电路Asynchronous Modulation异步调制Baker Clamping Circuit贝克箝位电路Bi-directional Triode Thyristor双向晶闸管Bipolar Junction Transistor-- BJT双极结型晶体管Boost-Buck Chopper升降压斩波电路Boost Chopper升压斩波电路Boost Converter升压变换器Bridge Reversible Chopper桥式可逆斩波电路Buck Chopper降压斩波电路Buck Converter降压变换器Commutation换流Conduction Angle导通角Constant Voltage Constant Frequency --CVCF恒压恒频Continuous Conduction--CCM（电流）连续模式Control Circuit 控制电路Cuk Circuit CUK 斩波电路Current Reversible Chopper电流可逆斩波电路Current Source Type Inverter--CSTI 电流（源）型逆变电路Cyclo convertor周波变流器DC-AC-DC Converter直交直电路DC Chopping直流斩波DC Chopping Circuit直流斩波电路DC-DC Converter直流－直流变换器Device Commutation器件换流Direct Current Control直接电流控制Discontinuous Conduction mode （电流）断续模式displacement factor 位移因数distortion power 畸变功率double end converter 双端电路driving circuit 驱动电路electrical isolation 电气隔离fast acting fuse 快速熔断器fast recovery diode快恢复二极管fast revcovery epitaxial diodes 快恢复外延二极管fast switching thyristor快速晶闸管field controlled thyristor场控晶闸管flyback converter 反激电流forced commutation 强迫换流forward converter 正激电路frequency converter 变频器full bridge converter全桥电路full bridge rectifier 全桥整流电路full wave rectifier 全波整流电路fundamental factor基波因数gate turn-off thyristor——GTO 可关断晶闸管general purpose diode 普通二极管giant transistor——GTR 电力晶体管half bridge converter 半桥电路hard switching 硬开关high voltage IC 高压集成电路hysteresis comparison 带环比较方式indirect current control间接电流控制indirect DC-DC converter直接电流变换电路insulated-gate bipolar transistor---IGBT绝缘栅双极晶体管intelligent power module---IPM智能功率模块integrated gate-commutated thyristor---IGCT集成门极换流晶闸管inversion 逆变latching effect 擎住效应leakage inductance 漏感light triggered thyristor---LTT光控晶闸管line commutation 电网换流load commutation 负载换流loop current 环流1 backplane 背板2 Band gap voltage reference 带隙电压参考3 bench top supply 工作台电源4 Block Diagram 方块图5 Bode Plot 波特图6 Bootstrap 自举7 Bottom FET Bottom FET8 bucket capacitor 桶形电容9 chassis 机架11 constant current source 恒流源12 Core Saturation 铁芯饱和13 crossover frequency 交叉频率14 current ripple 纹波电流15 Cycle by Cycle 逐周期16 cycle skipping 周期跳步17 Dead Time 死区时间18 DIE Temperature 核心温度19 Disable 非使能，无效，禁用，关断20 dominant pole 主极点21 Enable 使能，有效，启用22 ESD Rating ESD额定值23 Evaluation Board 评估板24 Exceeding the specifications below mayresult in permanent damage to the device, ordevice malfunction. Operation outside of theparameters specified in the ElectricalCharacteristics section is not implied. 超过下面的规格使用可能引起永久的设备损害或设备故障。
协作通信系统中的选择AF中继协议研究
本科毕业设计论文题目协作通信系统中的选择AF中继协议研究专业名称通信工程学生姓名 XXX指导教师毕业时间目录摘要 (I)ABSTRACT ........................................................... I I 第一章．绪论.. (1)研究背景及意义 (1)论文结构 (3)第二章．无线通信的根本介绍 (4)无线通信的定义 (4)无线通信的开展前景和趋势 (4)开展前景 (4)开展趋势 (8)无线信道 (9)2.3.1 无线信道定义 (9)2.3.2 影响无线信道的因素 (10)2.3.3 无线信道的分集 (11)．MIMO系统的产生及其应运 (15)2.4.1 MIMO的产生 (15)2.4.2 MIMO的应用 (16)协作分集 (17)2.5.1 协作分集的产生和开展趋势 (17)协作分集的优点 (18)协作分集面临的问题 (19)第三章协作通信的应用与协议 (20)3.1 协作通信的应用 (20)3.2协作通信的协议 (21)第四章．选择AF中继协议研究 (23)4.1 中继信道及协议 (24)4.1.1 中继信道的概念 (24)4.1.2 中继信道的原理 (24)中继协议存在的问题及解决的方法 (24)协作策略 (25)4.3 中继选择协作通信方法研究 (28)4.3.1 系统模型 (28)4.3.2 最优中继选择协作通信方法 (30)4.4 利用MGF方法的SER分析 (31)调和平均的简单MGF表达 (33)第5章总结与展望 (36)5.1 本文工作总结 (37)5.2 未来工作展望 (37)参考文献 (39)致谢 (40)毕业设计小结 (41)摘要在无线通信网络中，由于用户终端受体积、功率等各种条件的约束，给多天线技术的实施带来了困难。
协作分集技术作为一种虚拟多天线技术，可以通过中继节点的协作，对传输的信息进行转发处理，以使网络用户的能耗显著降低，保证终端的数据接收，优化网络性能。
平流层通信,HAP based Wireless Network
Min. 5 degree of elevation Recommended 15+ degree to avoid clutter
Architectures and Services(2) -Network Design-
Frequency Reuse Cellular architecture High Bandwidth for Broadband application
1平流层通信系统特别适用于有限区域、边缘地带以及战 役和应急情况下的临时服务
2系统的造价和资费较低。 3通信平台可以不需要发射器，通过调节自身浮力，就能
自行升空并移动到预定位置 4与蜂窝网相比，平流层通信可实现视距通信，路径损耗
只相当于半径为2km 的蜂窝小区的损耗
30.09.2019
46
平流层通信平台
Architectures and Services(3) -Network Design-
Backhaul links, duplicated
High traffic for down link Asymmetry to uplink Multiple uplinks for backhaul station
• Flexibility, Reconfigurability • Low cost of operation (comparing to Satellites) • Low propagation delay • High Elevation! • Wide area coverage • Broadcast/Multicast • Mobility !
池。
30.09.2019
通信行业英语中英对照手册(F)
通信行业英语中英对照手册(F)通信行业英语中英对照手册(F)F-CAPICH Forward-Common Auxiliary PIlot CHannel 前向公共辅助导频信道F-CPHCH Forward Common PHysical CHannel 前向公共物理信道F-DAPICH Forward Dedicated Auxiliary PIlot CHannel 前向专用辅助导频信道F-DCCH Forward Dedicated Control CHannel 前向专用控制信道F-DPHCH Forward Dedicated PHysical CHannel 前向专用物理信道F-EDFA Forward pumped EDFA 前向泵激励掺铒光纤放大器F-FCH Forward Fundemental CHannel 前向基本信道F-PCH Forward-Paging CHannel 前向寻呼信道F-PICH Forward-PIlot CHannel 前向导频信道F-RAMA Fair Resource Assignment Multiple Address 合理资源分配多址访问F-SCH Forward Supplemental CHannel 前向辅助信道F-SYNC Frame SYNChronizer 帧同步器F-SYNCH Forward-SYNchronous CHannel 前向同步信道FA Fiber Adaption 光纤适配FA Frame Aligner 帧定位器FA Frame Alignment 帧定位FAB Fiber Array Block 光纤阵列块FABM Fiber Amiplifier Booster Module 光纤放大器增强模块FAC Forward Acting Code 前向作用码FACCH Fast Associated Control CHannel 快速相关控制信道FACH Forward Access CHannel 前向接入信道FAITH Fiber Almost Into The Home 准光纤到家FAL Frame Alignment Loss 帧定位丢失FAL Frequency Allocation List 频率分配表FAM Frame Alignment Module 帧定位模块FAN Fiber in the Access Network 接入网光纤FAQ Frequently Asked Questions 常遇到的问题FART Frame Alighment Recovery Time 帧同步恢复时间FAS Fiber Access System 光纤接入系统FAS Flexible Access System 灵活接入系统FAS Frame Alignment Signal 帧定位信号FAST Fiber At Subscriber Terminal 用户端光纤FAT File Allocation Table 文件分配表FAT Flexible Access Termination 灵活接入终端FATDDL Frequency And Time Division Data Link 频分与时分数据链路FAW Frame Alignment Word 帧定位字FAXIWF FAX InterWorking Function 传真互通功能FB Fiber Booster 光纤增强器FB Fiber Bundle 光纤束FBB Fiber BackBone 光纤干线FBCN Fuzzy Backward Congestion Notification 模糊反向拥塞通知FBG Fiber Bragg Grating 光纤布拉格光栅FBGLS FBG Laser Sensor FBG激光传感器FBR Fiber Bragg Reflector 光纤布拉格反射器FBR Fixed Bit Rate 固定比特率FBS Flexible Bandwidth Sharing 灵活带宽共享FC Fiber Channel 光纤通道FC Forward Compatibility 前向兼容性FCA Fixed Channel Allocation 固定信道分配FCAL Fiber Channel Arbitrated Loop 光纤信道仲裁环路FCB File Control Block 文件控制块FCC Facsimile Conrol Channel 传真控制信道FCC Federal Communications Commission (美国)联邦通信委员会FCC Frequency Channel Code 频道编码FCCCH Forward Common Control CHannel 前向公共控制信道FCFS First Come First Served 先来先服务FCH Facsimile Channel Handling 传真信道处理FCLS First Come Last Served 先来后服务FCM Fuzzy Cognitive Map 模糊认知图FCN Frequency-Converting Network 变频网络FCN Full Connected Network 全连接网络FCP Frequency Control Program 频率控制程序FCS Fast Circuit Switching 快速电路交换FCS Fiber Channel Standard 光纤信道标准FCS Frame Check Sequence 帧校验序列FCT Fixed Celullar Terminal 固定蜂窝终端FD Fiber Duct 光纤管道FD Frame Disassembler 帧分解器FD-SS Frequency-Diversity Spread Spectrum 频率分集扩频FDCT Forward Discrete Consine Transform 前向离散余弦变量FDD Frequency Division Duplex 频分双工FDDI Fiber Distributed Data Interface 分布式光纤数据接口FDF Full-duplex Data Flow 全双工数据流FDI Feeder Distribution Interface 馈线分配接口FDL Fiber Delay Line 光纤延迟线FDM Frequency Division Mutiplexing 频分复用FDMA Frequency Division Multiple Access 频分多址接入FDP Fiber Distribution Point 光纤分布点FDR Forward Deflection Routing 前向改向路由选择FDX Full DupleX 全双工FE Function Element 功能单元FE Function Entity 功能实体FE-CDMA Frequency-Encoded CDMA 频率编码CDMAFEA Function Entity Action 功能实体作用FEAM Functional Entity Access Management 功能实体接入管理FEC Forward Error Conrol 前向差错控制FEC Forward Error Correction 前向纠错FEC Forwarding Equivalence Class 转发等价类型FECC-F Forward Error Correction Count-Fast data 前向纠错快速计数数据FECN Forward Explicit Congestion Notification 前向显式拥塞通知FED Forward Error Detection 前向检错FEFO First Ended First Out 先结束先送FEP Front-End Processor 前端处理器FER Frame Erasure Rate 帧删除率FER Frame Error Rate 误帧率FERF Far End Receive Failure 远端接收失效FES Fixed Earth Station 固定地球站FEXT Far-End CrosSTalk 远端串音FFH Fast Frequency-Hopping 快速跳频FFP Fiber Fabry-Perot 光纤法布里-珀罗FFP-TF Fiber Fabry-Perot Tunable Filter 光纤法布里-珀罗可调滤波器FFPF Fiber Fabry-Perot Filter 光纤法布里-珀罗滤波器FFPI Fiber Fabry-Perot Interferometer 光纤法布里-珀罗干涉仪FFRN Four-Fiber Ring Node 四纤环节点FFT Fast Fourier Transform 快速傅立叶变换FH Frame Handler 帧处理器FH Frame Header 帧头FH Frequency Hopping 跳频FH-CDMA Frequency-Hopped CDMA 跳频CDMAFHR Fixed Hierarchical Routing 固定等级选路FHSP Frame Handler SubPort 帧处理程序子端口FHSS Frequency Hopping Spread Spectrum 跳频扩频FI Format Identifier 格式标识符FIC Fiber Interface Card 光纤接口卡FICS Facsimile Intelligent Communication System 传真智能通信系统FIFO First In First Out 先进先出FIFS First In First Served 先进先服务FILO Firs In Last Out 先进后出FIM Fiber Interface Module 光纤接口模块FIM/CM Feature Interactive Management & Calling Management 特征交互管理与呼叫管理FIMS Feature Interaction in Multimedia System 多媒体系统特征交互FIN Full Interconnection Network 全互联网络FITL Fiber In The Loop 环路光纤FIU Facilities Interface Unit 设备接口单元FLAG Fiber Link Around the Globe 环球光纤链路FLL Fiber in the Local Loop 局域环路光纤FLM Fiber Loop Mirror 光环路镜像FM Facilities Management 设施管理FM Fault Management 故障管理FM Flexible Multiplexer 灵活复用器FM Forward Monitoring 前向监控FM Frequency Modulation 调频FM/FDMA Frequency Midulation / FDMA 调频/频分多址FM/TDMA Frequency Midulation / TDMA 调频/时分多址FMBS Frame Mode Bearer Service 帧模式承载业务FMC Fixed-Mobile Covergence 固定移动融合FMD Follow-Me-Diversion 跟我转移FMD Frame Mode Data 帧模式数据FMD Function Management Data 功能管理数据FMDI Function Management Data Interpreter 功能管理数据解释程序FMMS Fixed Media Mass Storage 固定媒体大容量存储器FMS File Management Subsystem 文件管理子系统FMS File Management System 文件管理系统FMSR FP-Mode Suppression Ratio 法布里-珀罗特模式抑制比FMUX Flexible MUltipleXer 灵活复用器FMV Full-Motion Video 全运动视频FN Fiber Node 光纤节点FN Functional Network 功能网络FNA Flexible Networking Architecture 灵活的网络结构FNA Free Network Address 空闲网络地址FNAE Free Network Address Element 空闲网络地址元素FNAS Frame relay Network Access Subsystem 帧中继网络接入子系统FNN Fuzzy Neural Network 模糊神经网络FNP Frontend Network Processor 前端网络处理机FO Fiber Optics 光纤FOA Fiber Optic Amplifier 光纤放大器FOAN Fiber Optic Access Network 光纤接入网络FOB FDM Output Buffer FDM输出缓冲器FOC Fiber Optic Cable 光缆FOC Fiber Optic Communication 光纤通信FOCC FOrward Control Channel 前向控制信道FOCN Fiber Optic Communication Network 光纤通信网FOCUS Fiber Optic Connection Universal System 光纤连接通用系统FOE Fiber Optic Extender 光纤延长器FOF Fluorescent Optical Fiber 发光光纤FOI Fiber Optic Isolator 光纤隔离器FOID Fiber Opitc Interface Device 光纤接口设备FoIP Fax over IP IP传真FOIRL Fiber Optic Inter-Repeater Link 中继器间光纤链路FOL Fiber Optic Laser 光纤激光器FOLAN Fiber Optic LAN 光纤局域网FOM Fiber Optic Modem 光纤调制解调器FOMAU Fiber Optic Medium Attachment Unit 光纤媒介附属单元FOP Failure Of Protocol 协议失效FOPMA Fiber Optic Physical Medium Attachment 光纤物理媒体装置FOS Fiber Optic Sensor 光纤传感器FOTC Fiber Optic Trunk Cable 干线光缆FOTIC Fiber Optic Transmitter Integrated Circuit 光纤发射机集成电路FOTN Fiber Optic Transmission Network 光纤传输网络FOTS Fiber Optic Temperature Sensor 光纤温度传感器FOX Fiber Optic eXtender 光纤扩展器FP Function Processor 功能处理机FPAD Facsimile Packet Assembly / Disassembly 传真分组组合/拆卸FPBS Fiber Polarization Beam Spliter 光纤偏振分束器FPGA Field Programmable Gate Array 现场可编程门阵列FPH FreePHone 免费电话(被叫集中付费) FPLL Frequency and Phase Locked Loop 锁频/锁相环FPLMTS Future Public Land Mobile Telecommunication Systems 未来公用陆地移动通信系统FPM Four Photon Mixing 四光子混合FPS Fast Packet Switching 快速分组交换FPSLA Fabry-Perot Semiconductor Laser Amplifier 法布里-珀罗半导体激光放大器FPT/FPS Fast Packet Transfer / Switching 快速分组传送/交换FR Frame Relay 帧中继FR Full Rate 全速率FRA File Relative Address 文件相关地址FRA Fixed Radio Access 固定无线接入FRAD Frame Relay Access Device 帧中继接入设备FRDTS Frame Relay Data Transmission Services 帧中继数据传输业务FRI Frame Relaying Information 帧中继信息FRMR FRaMe Reject 帧拒绝FRP Fast Reservation Protocol 快速保留协议FRP Fast Resolution Protocol 快速分辨协议FRP/DT Fast Reservation Protocol with Delayed Transmission 具有延迟传输的快速保留协议FRPH Frame Relay Packet Handler 帧中继分组处理程序FRS Frame Relay Service 帧中继业务FRS Frame Relay Switch 帧中继交换机FRSE Frame-Relay Switching Equipment 帧中继交换设备FRSF Frame Relay Service Function 帧中继业务功能FRT Frame Relay Terminal 帧中继终端FRTE Frame-Relay Terminal Equipment 帐中继终端设备FRTT Fixed Round-Trip Time 固定往返时间FS Fax Server 传真服务器FS Fiber Sensor 光纤传感器FS Frame Start signal 帧起始信号FS Frame State 帧状态FS Frame Switching 帧交换FS Frame Synchronizer 帧同步器FSAN Full Service Access Network 全业务接入网FSK Frequency Shift Keying 频移键控FSL Flexible System Link 灵活系统链路FSM FDDI Switching Module FDDI交换模块FSM FDM-channel Selector Module FDM信道选择器模块FSN Full Service Network 全业务网FSS Fixed Satellite Service 固定卫星业务FSS Flying Spot Scanner 飞点扫描器FSS Frame Synchronous Scrambling 帧同步扰码FSU Fixed Subscriber Unit 固定用户单元FSW Frame Synchronization Word 帧同步字FSYN Frame SYNchronization signal 帧同步信号FT Fiber Termination 光纤终端FT Fixed radio Terminal 固定式无线电终端FTAM File Transfer Access and Management 文件传送存取和管理FTAMS File Transfer Access and Management Services 文件传递访问及管理服务FTC Facsimile Transport Channel 传真传送信道FTC Fault Tolerant Computer 容错计算机FTC Fault-Tolerant Computing 容错计算FTF Fiber Termination Frame 光纤终端架FTLA Fiber-To-the-Last Amplifier 光纤到末级放大器FTM FDM Transmitter Module FDM发送器模块FTM Fiber Terminal Module 光纤终端模块FTM Fiber Transfer Module 光纤传送模块FTM File Transfer Manager 文件传送管理器FTN Facsimile Transmission Network 传真传输网FTN Four-Terminal Network 四端网络FTP File Transfer Protocol 文件传送协议FTR Full Text Retrieval 全文检索FTS Fast Track Selector 快速磁道选择器FTS Frame Transport System 帧传送系统FTSA Fiber-To-the-Service Area 光纤到服务区FTSMSTR Frame Transport System MaSTeR 帧传送系统主程序FTTA Fiber To The Apartment 光纤到公寓FTTB Fiber To The Bridge 光纤到桥梁FTTB Fiber To The Building 光纤到楼宇FTTC Fiber To The Curb 光纤到路边FTTCa Fiber To The Cabinet 光纤到机箱FTTD Fiber To The Desk 光纤到桌面FTTF Fiber To The Feeder 光纤到馈送器FTTF Fiber To The Floor 光纤到楼层FTTH Fiber To The Home 光纤到户FTTK Fiber To The Kerb 光纤到路边FTTN Fiber To The Node 光纤到节点FTTO Fiber To The Office 光纤到办公室FTTP Fiber To The Pedestal 光纤到人行道FTTR Fiber To The Remote module 光纤到远端模块FTTR Fiber To The Rural 光纤到农村FTTS Fiber To The Subscriber 光纤到用户FTTSA Fiber To The Service Area 光纤到服务区FTTV Fiber To The Village 光纤到村FTTx Fiber To The… 光纤到…FTTZ Fiber To The Zone 光纤到小区FUNI Frame User Network Interface 帧用户网络接口FWA Fixed Wireless Access 固定无线接入FWAN Fixed Wireless Access Network 固定无线接入网FWC Frequency and optical Wavelength Converter 频率和光波长变换器FWM Four Wave Mixing 四波混频FWPCS Future Wireless PCS 未来无线个人通信系统FWS Fast-Wavelength-Switched 快速波长交换。
Shure Wireless Microphone 产品说明说明书
Vocal SetFEATURES• Engineered for professional live sound:Rugged all-in-one wireless system for singers andpresenters.• State-of-the-art live sound featuring Sennheiser‘s renowned e 835, e 845, e 865, e 935, e 945 capsules on a lightweight aluminium transmitter with integrated mute switch• True diversity half-rack receiver in a full-metal housing with intuitive LCD display for full control• Easy and flexible wireless synchronization between transmitter and receiver via infrared• Fast frequency allocation for up to 12 receivers via new linking functionality• Up to 20 compatible channels• Up to 42 MHz bandwidth with 1680 selectable frequen-cies, fully tunable in a stable UHF range• Transmission Range: up to 100 meters / 300 feet• High RF output power (up to 30 mW) depending on country regulations DELIVERY INCLUDES• EM 100 G4 true diversity receiver• SKM 100 G4-S handheld transmitter• MMD 935-1 microphone head (935-S variants only)• MMD 945-1 microphone head (945-S variants only)• GA 3 rackmount set• MZQ 1 microphone clamp• power supply• 2 AA batteries• 2 rod antennas• RJ 10 cable• quick guide• safety guide• manufacturer declaration sheet• frequency supplement sheetVersatile wireless systems for those who sing, speak or play instruments with up to 42 MHz tuning bandwidth in a stable UHF range and fast, simultaneous setup of up to 12 linked systems.State-of-the-art live sound featuring Sennheiser‘s renowned e 935 and e 945 capsules on a lightweight aluminum trans-mitter with integrated mute switch.Vocal Set SPECIFICATIONSEM 100 G4RF characteristicsModulation Wideband FM Frequency ranges A1: 470 - 516 MHzA: 516 - 558 MHzAS: 520 - 558 MHzG: 566 - 608 MHzGB: 606 - 648 MHzB: 626 - 668 MHzC: 734 - 776 MHzD: 780 - 822 MHzE: 823 - 865 MHzJB: 806 - 810 MHzK+: 925 - 937.5 MHz1G8: 1785 - 1800 MHz Receiving frequencies Max. 1680 receivingfrequencies, adjustable in25 k Hz steps20 frequency banks, eachwith up to 12 factory-presetchannels, no intermodula-tion1 frequency bank with up to12 programmable channels Switching bandwidth up to 42 MHzNominal/peak deviation±24 kHz / ±48 kHz Receiver principle True diversitySensitivity (with HDX, peak deviation)< 2.5 μV for 52 dBAeff S/NAdjacent channel selection Typically ≥ 65 dB Intermodulation attenua-tionTypically ≥ 65 dB Blocking≥ 70 dB Squelch low: 5 dBμVmiddle: 15 dBμVhigh: 25 dBμVPilot tone squelch Can be switched off Antenna inputs 2 BNC socketsAF characteristicsCompander system Sennheiser HDXEQ presets (switchable,act on line and monitoroutputs)Preset 1: FlatPreset 2:Low Cut (-3 dB at 180 Hz)Preset 3:Low Cut/High Boost(-3 dB at 180 Hz,+6 dB at 10 kHz)Preset 4:High Boost(+6 dB at 10 kHz)Signal-to-noise ratio (1 mV,peak deviation)≥ 110 dBATotal harmonic distortion(THD)≤ 0.9 %AF output voltage (at peakdeviation, 1 kHz AF)6.3 mm jack socket(unbalanced): +12 dBuXLR socket(balanced): +18 dBu Setting range “AF Out”48 dB (3 dB steps) Overall deviceTemperature range-10 °C to +55 °CPower supply12 V DCCurrent consumption300 mADimensions Approx. 190 x 212 x 43 mm Weight Approx. 980 gCONNECTIONSVocal Set SPECIFICATIONSSKM 100 G4-SRF characteristicsModulation Wideband FM Frequency ranges A1: 470 - 516 MHzA: 516 - 558 MHzA10: 516 - 558 MHzAS: 520 - 558 MHzG: 566 - 608 MHzGB: 606 - 648 MHzB: 626 - 668 MHzB10: 626 - 668 MHzC: 734 - 776 MHzD: 780 - 822 MHzJB: 806 - 810 MHzE: 823 - 865 MHzK+: 925 - 937,5 MHz1G8: 1785 - 1800 MHz Transmission frequencies Max. 1680 receivingfrequencies, adjustable in25 k Hz steps20 frequency banks, eachwith up to 12 factory-presetchannels, no intermodula-tion1 frequency bank with up to12 programmable channels Switching bandwidth up to 42 MHzNominal/peak deviation±24 kHz / ±48 kHz Frequency stability≤ ±15 ppmRF output power at 50 ΩMax. 30 mWPilot tone squelch Can be switched off AF characteristicsCompander system Sennheiser HDXAF frequency response80 – 18,000 HzSignal-to-noise ratio (1 mV,peak deviation)≥ 110 dBATotal harmonic distortion(THD)≤ 0.9 %Max. input voltage 3 VeffInput impedance40 kΩInput capacitance SwitchableSetting range for inputsensitivity48 dB,adjustable in 6 dB steps Overall deviceTemperature range-10 °C to +55 °CPower supply 2 AA batteries, 1.5 V orBA 2015 accupack Nominal voltage 3 V battery /2.4 V rechargeable battery Current consumption at nominal voltage:typ. 180 mAwith transmitter switchedoff: ≤ 25 μAOperating time Typically 8 h Dimensions Approx. Ø 50 x 265 mm Weight (incl. batteries)approx. 450 gSPECIFICATIONSMMD 935-1Transducer principle dynamic Sensitivity 2.5 mV/Pa Sound pressure level154 dB SPL Pick-up pattern cardioid MMD 945-1Transducer principle dynamic Sensitivity 1.8 mV/Pa Sound pressure level154 dB SPL Pick-up pattern supercardioidVocal Set PRODUCT VARIANTSew 100 G4-935-S-A1470 - 516 MHz Art. no. 509737 ew 100 G4-935-S-A516 - 558 MHz Art. no. 509728 ew 100 G4-935-S-AS520 - 558 MHz Art. no. 509805 ew 100 G4-935-S-G566 - 608 MHz Art. no. 509739 ew 100 G4-935-S-GB606 - 648 MHz Art. no. 509982 ew 100 G4-935-S-B626 - 668 MHz Art. no. 509740 ew 100 G4-935-S-C734 - 776 MHz Art. no. 509806 ew 100 G4-935-S-D780 - 822 MHz Art. no. 509807 ew 100 G4-935-S-JB806 - 810 MHz Art. no. 509862 ew 100 G4-935-S-E823 - 865 MHz Art. no. 509983 ew 100 G4-935-S-1G81785 - 1800 MHz Art. no. 509964 ew 100 G4-945-S-A1470 - 516 MHz Art. no. 509741 ew 100 G4-945-S-A516 - 558 MHz Art. no. 509742 ew 100 G4-945-S-AS520 - 558 MHz Art. no. 509808 ew 100 G4-945-S-G566 - 608 MHz Art. no. 509743 ew 100 G4-945-S-GB606 - 648 MHz Art. no. 509984 ew 100 G4-945-S-B626 - 668 MHz Art. no. 509744 ew 100 G4-945-S-C734 - 776 MHz Art. no. 509809 ew 100 G4-945-S-D780 - 822 MHz Art. no. 509810 ew 100 G4-935-S-JB806 - 810 MHz Art. no. 509863 ew 100 G4-945-S-E823 - 865 MHz Art. no. 509985 ew 100 G4-945-S-1G81785 - 1800 MHz Art. no. 509986Vocal Set DIMENSIONSEM 100 G4Vocal Set DIMENSIONSSKM 100 G4-SVocal SetSennheiser electronic GmbH & Co. KG · Am Labor 1 · 30900 Wedemark · Germany · ARCHITECT‘S SPECIFICATIONA wireless RF transmission system consisting of a stationary receiver and a handheld transmitter includings a micropho-ne head.The system shall operate within twelve UHF frequency ranges, with a switching bandwidth of up to 42 MHz: 470 –516 M Hz, 516 – 558 MHz, 520 – 558 MHz, 566 – 608 M Hz, 606 – 648 MHz, 626 – 668 MHz, 734 – 776 MHz, 780 – 822 M Hz, 823 – 865 MHz, 806 – 810 MHz, 925 – 937.5 M Hz, 1785 – 1800 MHz; receiving frequencies shall be 1,680 per range and shall be tunable in 25 kHz steps. The system shall feature 20 fixed frequency banks with up to 12 compatible frequency presets and 1 user bank with up to 12 user programmable frequencies.The receiver shall be menu-driven with a backlit LC display showing the current frequency, frequency bank and channel number, metering of RF level, metering of AF level, lock status, pilot tone evaluation, muting function, and battery status of the associated transmitter. An auto-lock feature shall be provided to prevent settings from being accidentally altered. The receiver shall feature an integrated guitar tuner and shall provide a sound check mode.Some receiver parameters such as receiving frequency, receiver name and pilot tone setting shall be synchronizable with the associated transmitter via an integrated infrared interface.The receiver shall feature a balanced XLR-3M audio output with a maximum output of +18 dBu along with an unbalanced ¼" (6.3 mm) audio output with a maximum output of +12 dBu. The receiver shall have two DATA ports (RJ 10) to set up a multichannel system. Two BNC-type input sockets shall be provided for connecting the antennas. Nominal/peak devia-tion shall be ±24 kHz/±48 kHz. Squelch threshold shall be adjustable to three levels: Low (5 dBμV), Middle (15 dBμV) and High (25 dBμV).The receiver shall incorporate the Sennheiser HDX compander system and a defeatable pilot tone squelch. Sensitivity shall be < 2 μV for 52 dBA eff S/N with HDX engaged at peak deviation. Adjacent channel rejection shall be ≥ 65 d B (ty-pical). Intermodulation attenuation shall be ≥ 65 d B (typical); blocking shall be ≥ 70 dB. Four selectable equalizer presets shall be provided: “Flat”, “Low Cut” (−3 d B at 180 Hz), “Low Cut/High Boost” (−3 d B at 180 H z/+6 dB at 10 kHz) and “High Boost” (+6 dB at 10 k Hz). Signal-to-noise ratio at 1 mV and peak deviation shall be ≥ 110 dBA. Total harmonic distortion (THD) shall be ≤ 0.9 %. The audio output level shall be adjustable within a 48 d B range in steps of 3 dB.The receiver shall operate on 12 V power supplied from the NT 2-3 CW mains unit (for 100 – 240 V AC, 50/60 Hz). Power consumption shall be 300 mA. The receiver shall have a rugged metal housing; dimensions shall be approximately 190 x 212 x 43 mm (7.48" x 8.35" x 1.69"). Weight shall be approximately 980 grams (2.16 lbs). Operating temperature shall range from −10 °C to +55 °C (+14 °F to +131 °F).The receiver shall be the Sennheiser EM 100 G4.The radio microphone shall be menu-driven with a backlit LC display showing the current frequency, frequency bank and channel number, metering of AF level, transmission status, lock status, pilot tone transmission, muting function, and bat-tery status. An auto-lock feature shall be provided to prevent settings from being accidentally altered.The radio microphone parameters shall either be configurable in the associated receiver’s menu and synchronized with the radio microphone via an integrated infrared interface or shall be programmable in the radio microphone menu. Recei-ver parameters such as receiving frequency, receiver name and pilot tone setting shall be synchronizable with the radio microphone via an integrated infrared interface.The handheld vocal radio microphone shall be equipped with a mute switch, which shall be switchable between “AF on/off”, “RF on/off” and “Disabled” via the user interface. Nominal/peak deviation shall be ±24 kHz/±48 kHz. Frequency stability shall be ≤ ±15 ppm. RF output power at 50 Ω shall be 30 mW (typical).The radio microphone shall incorporate the Sennheiser HDX compander system and a defeatable pilot tone squelch.Audio frequency response shall range from 80 – 18,000 Hz. Signal-to-noise ratio at 1 mV and peak deviation shall be ≥ 110 dBA. Total harmonic distortion (THD) shall be ≤ 0.9 %. Input sensitivity shall be adjustable within a 48 dB range in steps of 6 dB.Power shall be supplied to the radio microphone by two 1.5 V AA size batteries or by one Sennheiser BA 2015 recharge-able accupack. Nominal voltage shall be 2.4 V, current consumption shall be typical 180 mA at nominal voltage; ≤ 25 μA when radio microphone is switched off. Operating time shall be typical 8 hours. The radio microphone shall have a rugged metal housing; dimensions shall be approximately 50 mm (1.97") in diameter and 265 mm (10.43") in length. Weight inclu-ding the batteries shall be approximately 450 grams (0.99 lbs). Operating temperature shall range from −10 °C to +55 °C (+14 °F to +131 °F).A range of microphone heads shall be available for the radio microphone.The radio microphone shall be the Sennheiser SKM 100-S G4.。
国际会议演讲稿
自我介绍Thank you, Mr./Ms. Chair. /professorMy name is sang qian. I am very honored to be here to do oral presentation.I am a Master student from Hohai University and I am currently doing some research on physical layer security.Today, I would like to share with you some of my research on relay selection in cooperative communication. (external /ek?st?rn?l; ?k?st?rn?l/)内容安排：My presentation includes these five parts.First, some background information about this research;Second, system model we have done;Third, NN-based relay selection scheme we have proposedForth, Simulation and results analysisAnd last, some conclusions we have gotP4Part one, introductionFirstly, I would like to give you a bit of background.Differing from the traditional cryptographic techniques based on secret keys, we can make use of wireless channel characteristics to enhance physical layer security.Cooperative communication has been widely recognized as an effective way to combat wireless fading and provide diversity gain which is one of the research hot spots.Machine learning as an emerging technology has been widely applied in image processing, cancer prediction, stock analysis and other fields. So why not try it in wireless communication?P5:Next, I want to talk a little bit about present studyRecent studies on deep learning for wireless communication systems have proposed alternative approaches to enhance certain parts of the conventional communication system such as modulation recognition、 channel encoding and decoding、channel estimation and detection and an autoencoder which can replace the total system with a novel architecture【modulation recognition:An NN architecture for modulation recognition that consists of a 4-layer NN and two two-layer NNs。
2012TWC-Buffer-Aided Relay Selection for Cooperative Diversity Systems without Delay Constraints
Abstract—In this paper, we study the relay selection problem for a finite buffer-aided decode-and-forward cooperative wireless network. A relay selection policy that fully exploits the flexibility offered by the buffering ability of the relay nodes in order to maximize the achieved diversity gain is investigated. This new scheme incorporates the instantaneous strength of the wireless links as well as the status of the finite relay buffers and adapts the relay selection decision on the strongest available link by dynamically switching between relay reception and transmission. In order to analyse the new relay selection policy in terms of outage probability and diversity gain, a theoretical framework that models the evolution of the relay buffers as a Markov chain (MC) is introduced. The construction of the state transition matrix and the related steady state of the MC are studied and their impact on the derivation of the outage probability is investigated. We show that the proposed relay selection scheme significantly outperforms conventional relay selection policies for all cases and ensures a diversity gain equal to two times the number of relays for large buffer sizes. Index Terms—Cooperative networks, relay channel, buffers, relay selection, outage probability, Markov chain.
通信工程毕业设计的论文外文翻译TDCDM与WCM络优化分析
毕业设计（论文）外文参考资料及译文译文题目: TD-SCDMA与WCMA网络优化分析3G network optimization 学生姓名：学号：专业：通信工程所在学院:龙蟠学院指导教师：职称：讲师2011年 12 月 1 日说明:要求学生结合毕业设计（论文）课题参阅一篇以上的外文资料，并翻译至少一万印刷符（或译出3千汉字）以上的译文。
译文原则上要求打印(如手写，一律用400字方格稿纸书写），连同学校提供的统一封面及英文原文装订,于毕业设计（论文）工作开始后2周内完成，作为成绩考核的一部分.3G network optimization摘自TD-SCDMA无线网络优化原理及方法One, the basic process of 3G network optimizationOperators aim is to build a profitable network, they are very concerned about the network construction, expansion and upgrade in the process of investment cost and its final performance, but the expansion，upgrade costs and network performance is a pair of contradiction. Construction cost budget and control can get relatively accurate numerical，but the performance of the network is composed of many subjective and objective factors. On one hand, the network capacity expansion，upgrading and upgrades to existing users can guarantee the normal use，on the other hand, it also can provide competitive new business，and makes further expansion，upgrading and upgrades can be carried out smoothly。
戴尔 EMC PowerSwitch S5200-ON系列交换机说明书
The PowerSwitch S5200-ON 25/100GbE fixed switches comprise Dell EMC’s latest disaggregated hardware and software data center networking solutions, providing state-of-the-art, high-density 25/100GbE ports and abroad range of functionality to meet the growing demands of today’s data center environment. These innovative, next-generation open networking switches offer optimum flexibility and cost-effectiveness for web 2.0, enterprise, mid- market and cloud service provider with demanding compute and storage traffic environments.The S5200-ON is a complete family of switches: 12-port, 24-port, and 48-port 25GbE/100GbE ToR switches, 96-port 25GbE/100GbE Middle of Row (MoR)/End of Row (EoR) switch, and a 32-port 100GbE Multi-Rate Spine/Leaf switch. From the compact half-rack width S5212F-ON providing an ideal form factor for hyper-convergeddeployments, to the high density S5296F-ON for Middle of Row deployments, the S5200-ON series offersperformance and flexibility for a variety of network designs.In addition to 100GbE Spine/Leaf deployments, theS5232F-ON can also be used in high density deployments using breakout cables to achieve up to 128 10GbE or 128 25GbE ports.Using industry-leading hardware and a choice of Dell EMC’s OS10 or select 3rd party network operatingsystems and tools, the S5200-ON switches incorporate multiple architectural features that optimize data center network flexibility, efficiency and availability, including IO panel to PSU or PSU to IO panel airflow for hot/cold aisle environments, redundant, hot-swappable power supplies and fans and deliver non-blocking performance for workloads sensitive to packet loss.Priority-based flow control (PFC), data center bridge exchange (DCBX) and enhanced transmission selection(ETS) make the S5200-ON family ideally suited for DCB environments.Dell EMC PowerSwitch S5200-ON switches support the open source Open Network Install Environment (ONIE) for zero touch installation of Dell EMC’s OS10 networking operating system, as well as alternative network operating systems.Key applications• Organizations looking to enter the software-defined data center era with a choice of networking technologies designed to maximize flexibility • High-density 10/25GbE ToR server aggregation in high-performance data center environments at the desired fabric speed with the S5248F-ON or S5296F-ON• Low-density 10/25GbE server and storage aggregation with the S5212F-ON and S5224F-ON• Small-scale Fabric implementation via the S5232F-ON switch in leaf and spine along with S5248F-ON 1/10/25GbE ToR switches enabling cost-effective aggregation of 10/25/40/50/100 uplinks• Multi-functional 10/25/40/50/100GbE switching in High Performance Computing Clusters or other business-sensitive deployments requiring the highest bandwidth.• iSCSI deployments, including DCB converged lossless transactions• Single-pass VXLAN routing (future software release)Dell EMC PowerSwitch S5200-ON Series SwitchesHigh-performance, open networking 25GbE top-of-rack and 100GbEspine/leaf switchesKey features• 1 or 2RU high-density ToR switches with up to 48 or 96 ports of 25GbE or 32 ports of 100GbE• Multi-rate 100GbE ports support 10/25/40/50/100GbE • Scalable L2 and L3 Ethernet switching with QoS anda full complement of standards-based IPv4 and IPv6features, including OSPF and BGP routing support • Line-rate performance via non-blocking switchfabrics: 3.2Tbps (6.4Tbps full-duplex) on S5296F-ONand S5232F-ON, 2.0Tbps (4.0Tbps full-duplex) onS5248F-ON, and 1.08Tbps (2.16Tbps full-duplex) onS5224F-ON and S5212F-ON• L2 multipath support via Virtual Link Trunking (VLT)and Routed VLT support• VXLAN gateway functionality support for bridging and routing the non-virtualized and the virtualized overlaynetworks with line rate performance (hardware only)• Support for OS10 Enterprise Edition• Converged network support for DCB, with priority flow control (802.1Qbb), ETS (802.1Qaz), DCBx and iSCSI TLV support• Routable RoCE to enable convergence of computeand storage on Leaf/Spine Fabric• IO panel to PSU airflow or PSU to IO panel airflowRedundant, hot-swappable power supplies and fans on most models• Supports the open source Open Network InstallEnvironment (ONIE) for zero touch installation ofalternate network operating systems• L2 VXLAN (Static VXLAN with VLT, BGP EVPN)• Tool-less enterprise ReadyRails™ mounting kits formost models reducing time and resources for switchrack installation (S5212F-ON will utilize a tandem tray for mounting)• Power-efficient operation and Dell Fresh Air 2.0compliant up to 45ºC helps reduce cooling costs intemperature constrained deploymentsKey features with Dell EMC Networking OS10• Consistent DevOps framework across compute,storage and networking elements• Standard networking features, interfaces and scripting functions for legacy network operations integration • Standards-based switching hardware abstraction viaSwitch Abstraction Interface (SAI)• Pervasive, unrestricted developer environment viaControl Plane Services (CPS)• OS10 Enterprise Edition software enables Dell EMClayer 2 and 3 switching and routing protocols withintegrated IP services, quality of service, manageability and automation features• Leverage common open source tools and bestpractices (data models, commit rollbacks*)• Increase VM Mobility region by stretching L2 VLANwithin or across two DCs with unique VLT capabilities • Scalable L2 and L3 Ethernet Switching with QoS, ACL and a full complement of standards based IPv4 andIPv6 features including OSPF, BGP and PBR• Enhanced mirroring capabilities including localmirroring, Remote Port Mirroring (RPM), andEncapsulated Remote Port Mirroring (ERPM)• Converged network support for Data Center Bridging, with priority flow control (802.1Qbb), ETS (802.1Qaz), DCBx and iSCSI TLV*Roadmap1 RJ45 console/management port with RS232 signalingS5212F-ON: 12x25GbE SFP28 + 3x 100GbE QSFP28S5224F-ON: 24x25GbE SFP28 + 4x 100GbE QSFP28S5248F-ON: 48x25GbE SFP28 + 4x 100GbE QSFP28 + 2x 2x100GbE QSFP28-DDS5296F-ON: 96x25GbE SFP28 + 8x 100GbE QSFP28S5232F-ON: 32x100GbE QSFP28 ports +2xSFP+ 10GbEEnvironmentalPower supply: 100–240 VAC 50/60 HzMax Operating specifications:AC Max. Operating specifications: Operating temperature: 32° to 113°F(0° to 45°C)Operating humidity: 5 to 90% (RH),non-condensingMax. Non-operating specifications:Storage temperature: –40° to 158°F(–40° to 70°C)Storage humidity: 5 to 90% (RH), non- condensingFresh air Compliant to 45°CRedundancyHot swappable redundant powerHot swappable redundant fans (fixed power supply and fans on S5212F-ON)PerformancePacket buffer memory: 32MBCPU memory: 16GBMAC addresses: 160KARP table: 128KIPv4 routes: 128KIPv6 routes: 64KMulticast hosts: 32KLink aggregation: 16 links per group, 128 groups Layer 2 VLANs: 4KMSTP: 64 instancesLAG load balancing: Based on layer 2, IPv4 or IPv6 headersIEEE Compliance802.1AB LLDPTIA-1057 LLDP-MED802.3ad Link Aggregation802.1D Bridging, STP802.1p L2 Prioritization802.1Q VLAN Tagging802.1Qbb PFC 802.1X Network Access Control802.3ac Frame Extensions for VLANTagging802.3x Flow ControlLayer2 Protocols802.1D Compatible802.1p L2 Prioritization802.1Q VLAN Tagging802.1s MSTP802.1w RSTP802.1t RPVST+VLT (Virtual Link Trunking)VRRP Active/ActiveRSTP & RPVST+Port Mirroring on VLT portsDCB, iSCSI, FSB on VLTRPM/ERPM over VLTVLT Minloss upgradeRFC Compliance768 UDP793 TCP854 Telnet959 FTP1321 MD51350 TFTP2474 Differentiated Services2698 Two Rate Three Color Marker3164 Syslog4254 SSHv2General IPv4 Protocols791 IPv4792 ICMP826 ARP1027 Proxy ARP1035 DNS (client)1042 Ethernet Transmission1191 Path MTU Discovery1305 NTPv41519 CIDR1812 Routers, Static Routes1858 IP Fragment Filtering2131 DHCPv4 (server and relay)5798 VRRPv33021 31-bit Prefixes1812 Requirements for IPv4 Routers1918 Address Allocation for PrivateInternets2474 Diffserv Field in IPv4 and Ipv6Headers2597 Assured Forwarding PHB Group3195 Reliable Delivery for Syslog3246 Expedited Forwarding PHB GroupVRF (BGPv4/v6)1981 Path MTU for IPv62372 IPv6 Addressing2460 IPv6 Protocol Specification2461 Neighbor Discovery2462 Stateless Address AutoConfig2711 IPv6 Router alert2463 ICMPv62464 Ethernet Transmission2675 IPv6 Jumbograms3484 Default Address Selection3493 Basic Socket Interface4291 Addressing Architecture3542 Advanced Sockets API3587 Global Unicast Address Format4291 IPv6 Addressing2464 Transmission of IPv6 Packets overEthernet Networks2711 IPv6 Router Alert Option4007 IPv6 Scoped Address Architecture4213 Transition Mechanisms for IPv6 Hostsand Routers3315 DHCPv6 Server & RelayIPv6 Static RoutesOSPF1745 OSPF/BGP interaction1765 OSPF Database overflow2154 OSPF with DigitalSignatures2328 OSPFv25340 OSPF for IPv6 (OSPFv3)2370 Opaque LSA3101 OSPF NSSA4552 OSPFv3 AuthenticationMulticast4541 IGMPv1/v2/v3 and MLDv1/v2SnoopingSecurity2865 RADIUS3162 Radius and IPv63579 Radius support for EAP3580 802.1X with RADIUS3826 AES Cipher in SNMP1492 TACACS (Authentication, Accounting)Control Plane, VTY & SNMP ACLsIP Access Control ListsBGP1997 Communities2385 MD52439 Route Flap Damping2796 Route Reflection2918 Route Refresh3065 Confederations4271 BGP-42545 BGP-4 Multiprotocol Extensions for IPv6 Inter-Domain Routing2858 Multiprotocol Extensions4360 Extended Communities4893 4-byte ASN5396 4-byte ASN Representation5492 Capabilities Advertisementdraft-ietf-idr-add-paths-04.txt ADD PATHLinux DistributionDebian Linux version 9Linux Kernel 4.9Network Management and Monitoring SNMPv1/2cIPv4/IPv6 Management support (Telnet, FTP, TACACS, RADIUS, SSH, NTP)SyslogPort MirroringRPM/ERPM3176 SFlowSupport Assist (Phone Home)RestConf APIs (Layer 2 features)XML SchemaCLI Commit (Scratchpad)Uplink Failure DetectionObject TrackingBidirectional Forwarding Detection (BFD) AutomationControl Plane Services APIsLinux Utilities and Scripting ToolsCLI Automation (Multiline Alias)Zero Touch Deployment (ZTD)Ansible, Puppet, Chef, SaltStack8040 RESTCONF APIs (L3)Quality of ServicePrefix ListRoute-MapRate Shaping (Egress)Rate Policing (Ingress)Scheduling AlgorithmsRound RobinWeighted Round RobinDeficit Round RobinStrict PriorityWeighted Random Early DetectData center bridging802.1Qbb Priority-Based Flow Control802.1Qaz Enhanced TransmissionSelection (ETS)Explicit Congestion NotificationData Center Bridging eXchange (DCBx)DCBx Application TLV (iSCSI, FCoE)RoCEv2Software Defined NetworkingOpenFlow 1.3 (Native)MIBSIP MIBIP Forward MIBHost Resources MIBIF MIBLLDP EXT1/3 MIBEntity MIBLAG MIBDell-Vendor MIBTCP MIBUDP MIBSNMPv2 MIBETHERLIKE-MIBSFLOW-MIBPFC-MIBRegulatory complianceSafetyUL/CSA 60950-1, Second EditionEN 60950-1, Second EditionIEC 60950-1, Second Edition Including AllNational Deviations and Group DifferencesEN 60825-1 Safety of Laser Products Part 1:Equipment Classification Requirements andUser’s GuideEN 60825-2 Safety of Laser Products Part 2:Safety of Optical Fibre CommunicationSystemsFDA Regulation 21 CFR 1040.10 and 1040.11EmissionsAustralia/New Zealand: AS/NZS CISPR 22:2006, Class ACanada: ICES-003, Issue-4, Class AEurope: EN 55022: 2006+A1:2007(CISPR 22: 2006), Class AJapan: VCCI V3/2009 Class AUSA: FCC CFR 47 Part 15, Subpart B:2011,Class AImmunityEN 300 386 V1.4.1:2008 EMC for NetworkEquipmentEN 55024: 1998 + A1: 2001 + A2: 2003EN 61000-3-2: Harmonic CurrentEmissionsEN 61000-3-3: Voltage Fluctuations andFlickerEN 61000-4-2: ESDEN 61000-4-3: Radiated ImmunityEN 61000-4-4: EFTEN 61000-4-5: SurgeEN 61000-4-6: Low Frequency ConductedImmunityRoHSAll S Series components are EU RoHScompliant.CertificationsAvailable with US Trade Agreements Act(TAA) complianceUSGv6 Host and Router Certified on DellNetworking OS 9.5 and greaterIPv6 Ready for both Host and RouterUCR DoD APL (core and distributionALSAN switchWarranty1 year return to depot© 2018 Dell Inc. or its subsidiaries. All Rights Reserved. Dell, EMC and other trademarks are trademarks of Dell Inc. or its subsidiaries. Other trademarks may be trademarks of their respective owners.Learn more at /NetworkingLearn more at /ServicesIT Lifecycle Services for NetworkingExperts, insights and easeOur highly trained experts, with innovative tools and proven processes, help you transform your IT investments into strategic advantages.Plan & DesignLet us analyze your multivendor environment and deliver a comprehensive report and action plan to build upon the existing network and improve performance.Deploy & IntegrateGet new wired or wireless network technology installed and configured with ProDeploy. Reduce costs, save time, and get up and running fast.EducateEnsure your staff builds the right skills for long-term success. Get certified on Dell EMC Networking technology and learn how to increase performance and optimize infrastructure.Manage & SupportGain access to technical experts and quickly resolve multivendor networking challenges with ProSupport. Spend less time resolving network issues and more time innovating.OptimizeMaximize performance for dynamic ITenvironments with Dell EMC Optimize. Benefit from in-depth predictive analysis, remotemonitoring and a dedicated systems analyst for your network.RetireWe can help you resell or retire excess hardware while meeting local regulatory guidelines and acting in an environmentallyresponsible way.。
3500 33 16-Channel Relay Module 商品说明说明书
DescriptionThe 3500/33 16-Channel Relay Module is a full-height modulethat provides 16 relay outputs. You can place any number of16-channel relay modules in any of the slots to the right of theTransient Data Interface (TDI) Module.Each output of the 3500/33 16-Channel Relay Module can beindependently programmed to perform voting logic.Each relay of the module includes Alarm Drive Logic.Programming for the Alarm Drive Logic uses AND and OR logicand may use the following:l Alarming inputs (alert and danger statuses)l Not-OKl Individual Measured Variables from any monitorchannel or any combination of monitor channels in therackYou can program the Alarm Drive using the 3500 RackConfiguration Software.3500/3316-Channel Relay Module DatasheetBently Nevada Machinery Condition Monitoring162301Rev.YSpecificationsInputsPowerConsumption 5.8 watts typical OutputsPhysicalRack Space Requirements Main Module 1 full-height front slot I/O Modules 1 full-height rear slot Contact Ratings for Standard SystemsStandard RelaysContact Ratings for Failsafe Systems and Hazardous Area SystemsStandard Relaysl Minimum switched load for standard(silver) contacts is 100 mA @ 5 Vdc.l Minimum switched load for Low Current(gold-plated) contacts is 1 mA @ 1 Vdc. Low Current RelaysSpecific to AC up to 120VAC:l The Minimum switching current for Goldplated is 1m Al The maximum switching current beforedamaging the Gold relays is 5m AFor relay contact selection S ee Front and Rear View of the 3500/33 16-Channel Relay Module on page 8.Compliance and Certifications (Approvals Pending)FCCThis device complies with part 15 of theFCC Rules. Operation is subject to thefollowing two conditions:l This device may not cause harmfulinterference.l This device must accept anyinterference received, includinginterference that may causeundesired operation.EMCEuropean Community Directive:EMC Directive 2014/30/EUStandards:EN 61000-6-2; Immunity forIndustrial EnvironmentsEN 61000-6-4; Emissions forIndustrial Environments Electrical SafetyEuropean Community Directive:LV Directive 2014/35/EUStandards:EN 61010-1RoHSEuropean Community Directive:RoHS Directive 2011/65/EU Cyber SecurityDesigned to meet IEC 62443 MaritimeDNV GL rules for classification – Ships,offshore units, and high speed and lightcraftABS Rules for Condition of Classification,Part 1l Steel Vessels Rulesl Offshore Units and Structures Functional SafetySIL 2Hazardous Area ApprovalsFor the detailed listing of country andproduct specific approvals, refer tothe Approvals Quick Reference Guide(108M1756) available from . cNRTLusClass I, Zone 2: AEx/Ex nA nC ic IIC T4 Gc;Class I, Zone 2: AEx/Ex ec nC ic IIC T4 Gc;Class I, Division 2, Groups A, B, C, and D;T4 @ Ta= -20˚C to +65˚C (-4˚F to +149˚F)When installed p er drawing 149243 or149244.ATEX/IECExII 3 GEx nA nC ic IIC T4 GcEx ec nC ic IIC T4 GcT4 @ Ta= -20˚C to +65˚C(-4˚F to +149˚F)When installed per drawing 149243 or149244.Ordering InformationFor the detailed listing of country and product specific approvals, refer to the Approvals Quick Reference Guide (108M1756) available from .3500/33 A A-BBA: O utput Module01 16-Channel Relay Output Module0216-Channel Failsafe Relay OutputModule03Low Current 16-Channel Relay Output Module04Low Current 16-Channel Failsafe Relay Output ModuleB: H azardous Area Approval Option00None01cNRTLus (Class 1, Division 2)02ATEX / IECEx / CSA (Class 1, Zone 2) Spares149986-01Spare 16-Channel RelayControl Module149992-01Spare 16-Channel RelayOutput Module149992-02Spare 16-Channel FailsafeRelay Output Module149992-03Spare 16-Channel LowCurrent Relay Output Module149992-04Spare 16-Channel Low Current Failsafe Relay Output Module04425545Grounding Wrist Strap(single use)16229116-Channel Relay ModuleUser Guide 00580453Connector HeaderInternal Termination16-positionGreen166M2381Connector HeaderPush-in-Spring Type(Alternative for PN 00580453)Ordering Considerations Array l The 3500/33 16-Channel Relay Modulerequires the 3500 Rack Config, version 3.3or later.l The 3500/33 requires the 3500 DataAcquisition Software, version 2.40 or later.l The 3500/33 16-Channel Relay Modulerequires the 3500 Data Display Software,version 1.40 or later.l When ordered with the multipleapprovals option (02), the 3500 monitoris certified to Zone 2 standards, includingATEX and North American zones.l The Zone 2 standards specify increasedspacing requirements at higher voltages.The 3500/33 16-Channel Relay Moduledoes not meet these spacingrequirements. Thus, the module orderedwith the multiple approvals option islimited to a lower voltage than those withthe other approvals options.l Using higher voltages violates thehazardous area certificates associatedwith the multiple approvals option.l The North American Division 2 standardsassociated with the CSA-only approvalsoption (-01) have been de-rated to 30Vrms to comply with 61010-1 type testrequirements.l If the 3500/3316-Channel Relay Module ispart of a functional safety (SIL) system,the functional safety certificate requiresthe restricted voltage. Higher voltages arenot allowed for functional safety (SIL)systems.Graphs and Figures1. Relay Module2. I/O Module3. Status LEDs4. Relay Channel LEDs5. Relay Contacts6. Relay Mode Selection SwitchFigure 1: Front and Rear View of the 3500/33 16-Channel Relay Module1. Low Current Output Modules (Ordering options A03 andA04) use gold-plated relay contacts2. Standard Output Modules (Ordering options A01 and A02)use silver relay contactsIf the application is at the transition between the low current region a nd the high current region, the most appropriate choice is to select the Low Current option (with gold-plated contacts). If the gold plating is damaged by excessive load, the contacts will still behave as standard silver contacts.Figure 2: Relay Contact Selection for DC LoadsCopyright 2023 Baker Hughes Company. All rights reserved.Bently Nevada, M2 and Orbit Logo are registered trademarks of Bently Nevada, a Baker Hughes business, in the United States and other countries. The Baker Hughes logo is a trademark of Baker Hughes Company. All other product and company names are trademarks of their respective holders. Use of the trademarks does not imply any affiliation with or endorsement by the respective holders.Baker Hughes provides this information on an “as is” basis for general information purposes. Baker Hughes does not make any representation as to the accuracy or completeness of the information and makes no warranties of any kind, specific, implied or oral, to the fullest extent permissible by law, including those of merchantability and fitness for a particular purpose or use. Baker Hughes hereby disclaims any and all liability for any direct, indirect, consequential or special d amages, claims for lost profits, or third party claims arising from the use of the information, whether a claim is asserted in contract, tort, or otherwise. Baker Hughes reserves the right to make changes in specifications and features shown herein, or discontinue the product described at any time without notice or obligation. Contact your Baker Hughes representative for the most current information.The information contained in this document is the property of Baker Hughes and its affiliates; and is subject to change without prior notice. It is being supplied as a service to our customers and may not be altered or its content repackaged without t he express written consent of Baker Hughes. This product or associated products may be covered by one or more patents. See /legal.1631 Bently Parkway South, Minden, Nevada USA 89423Phone: 1.775.782.3611 (US) or /support。
Line 6 Relay G10TII G10 G10S 用户指南说明书
2
• 9V DC Power Supply (manufacturer: Shenzhen JingQuanHua & Everrise Intelligent Electric Co. Ltd. and model: NSA5Ex-090050)
• USB-A to Micro USB-B Cable • Pilot's Guide and End User License Agreement
What’s in the Box
RELAY G10TII • Relay G10TII Transmitter • Pilot's Guide and End User License Agreement
RELAY G10 • Relay G10TII Transmitter (not included in G10R Receiver Separate) • Relay G10 Receiver • USB-A to Micro USB-B cable • Universal USB Power Supply (5V-1A) kit with international AC adapter kit (manufacturer: Hon-
multiple wireless units (Relay G10S and select RelayReady products) • Best in class sound quality provided by: • 24-bit uncompressed digital transmission • Best in class DAC and ADC provide super low noise
8 Channel Relay Board Manual
8 Channel Relay Board ManualContents1 Products and System Requirements (3)1.1 Overview (3)1.2 Datasheet (4)1.2.1 Features (4)1.2.2 Connector Identification (4)1.2.3 Connector Pinouts (4)1.2.4 Jumper Identification (7)1.2.5 Jumper Pinouts (7)1.2.6 Example Jumper Settings (11)1.2.7 LED Indicators (12)1Products and System RequirementsThis document is intended as a guide to installing and operating the 8 Channel Relay Board. Contained within are instructions on system integration, wiring, setup, and standard operating methods.1.1OverviewThe 8 Channel Relay Board offers 8 relays that can be individually configured as either a contact closure (Form A) or as a voltage source if power is connected to an auxiliary connector.Two input signal connectors are provided to allow seamless cabling to a 501A Signal Generator using either the rear panel 10 position Molex Minifit output connector or the Output Aux Header.An LED array is provided to power on indication and channel operating state.1.2Datasheet1.2.1Features•8 relay channels•5A rated load (resistive load) at 250VAC5A rated load (resistive load) at 30VDC2A rated load (inductive load) at 250VAC2A rated load (inductive load) at 30VDC•Individual channel selection of operating modeJumper selectableContact closure or voltage source•1-to-1 cable from 501A Signal Generator output connector•1-to-1 cable from 501A Signal Generator Aux output connector•LED indicators to provide operating state1.2.2Connector Identification1.2.3Connector Pinouts1 GPO1 Relay 1 Control I2 GPO3 Relay 3 Control I3 GPO5 Relay 5 Control I4 GPO7 Relay 7 Control I5 +5VDC Power Power6 GPO2 Relay 2 Control I7 GPO4 Relay 4 Control I8 GPO6 Relay 6 Control I9 GPO8 Relay 8 Control I10 GND GND GNDP100 and JP100 must not be used simultaneously.1 GPO2 Relay 2 Control I2 GPO1 Relay 1 Control I3 GPO4 Relay 4 Control I4 GPO3 Relay 3 Control I5 GPO6 Relay 6 Control I6 GPO5 Relay 5 Control I7 GPO8 Relay 8 Control I8 GPO7 Relay 7 Control I9 GND GND GND10 +5VDC Power PowerP100 and JP100 must not be used simultaneously.1 Relay 1 NO1 Relay 1 terminal 1 O2 Relay 1 JS Relay 1 terminal 2 O3 Relay 2 NO1 Relay 2 terminal 1 O4 Relay 2 JS Relay 2 terminal 2 O5 Relay 3 NO1 Relay 3 terminal 1 O6 Relay 3 JS Relay 3 terminal 2 O7 Relay 4 NO1 Relay 4 terminal 1 O8 Relay 4 JS Relay 4 terminal 2 OALL JS terminals are determined by the Jumper Selections defined below.1 Relay 5 NO1 Relay 5 terminal 1 O2 Relay 5 JS Relay 5 terminal 2 O3 Relay 6 NO1 Relay 6 terminal 1 O4 Relay 6 JS Relay 6 terminal 2 O5 Relay 7 NO1 Relay 7 terminal 1 O6 Relay7 JS Relay 7 terminal 2 O7 Relay 8 NO1 Relay 8 terminal 1 O8 Relay 8 JS Relay 8 terminal 2 OALL JS terminals are determined by the Jumper Selections defined below.1 V_EXT V_EXT POWER2 GND_EXT GND_EXT POWERV_EXT and GND_EXT are used to provide a voltage that can be switchedby an appropriately configured relay. They do not need to be connectedfor contact closure operation.1.2.4Jumper Identification1.2.5Jumper PinoutsJ1 – Relay 1 Mode Jumper 1Pin Signal Description I/O1 V_EXT V_EXT POWER2 Relay 1 NO2 Relay 1 NO terminal 2 -O3 Relay 1 JS Relay 1 TerminalBlock ContactJ2 – Relay 2 Mode Jumper 2Pin Signal Description I/O12 Relay 2 NO2 Relay 2 NO terminal 2 -O3 Relay 2 JS Relay 2 TerminalBlock Contact1 V_EXT V_EXT POWER2 Relay3 NO2 Relay 3 NO terminal 2 -O3 Relay 3 JS Relay 3 TerminalBlock Contact1 V_EXT V_EXT POWER2 Relay 4 NO2 Relay 4 NO terminal 2 -3 Relay4 JS Relay 4 TerminalOBlock Contact1 V_EXT V_EXT POWER2 Relay 5 NO2 Relay 5 NO terminal 2 -O3 Relay 5 JS Relay 5 TerminalBlock Contact1 V_EXT V_EXT POWER2 Relay 6 NO2 Relay 6 NO terminal 2 -O3 Relay 6 JS Relay 6 TerminalBlock Contact1 V_EXT V_EXT POWER2 Relay 7 NO2 Relay 7 NO terminal 2 -3 Relay 7 JS Relay 7 TerminalOBlock Contact1 V_EXT V_EXT POWER2 Relay 8 NO2 Relay 8 NO terminal 2 -O3 Relay 8 JS Relay 8 TerminalBlock ContactFor J1-J8 Jumpers, connecting positions 1 to 2 will provide V_EXT to that channel’s relay. When the relay is “on” V_EXT will become available at the relay’s NO1 terminal on the terminal block.Connecting positions 2 to 3 will provide a contact closure at the terminal block.O1 Relay 1 JS Relay 1 TerminalBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -1 Relay2 JS Relay 2 TerminalOBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -O1 Relay 3 JS Relay 3 TerminalBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -O1 Relay 4 JS Relay 4 TerminalBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -1 Relay 5 JS Relay 5 TerminalOBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -1 Relay 6 JS Relay 6 TerminalOBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -O1 Relay 7 JS Relay 7 TerminalBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -1 Relay 8 JS Relay 8 TerminalOBlock Contact2 GND_EXT GND_EXT POWER3 Open Open -For J1.1-J8.1 Jumpers, connecting positions 1 to 2 will provide GND_EXT to that channels JS terminal block.Connecting positions 2 to 3 will provide a contact closure at the terminal block.J X and J X.1, where X is the individual relay channel MUST BE SET IDENTICALLY.1.2.6Example Jumper Settings1.2.6.1Jumpers All Set To Contact ClosureRed Markers indicate where jumpers should be installed for contact closure operation. 1.2.6.2Jumpers All Set To V_EXT and GND_EXT OperationOrange Markers indicate where jumpers should be installed for V_EXT and GND_EXT operation.1.2.6.3Channels 1-4 set to Contact Closure and Channels 5-8 set to V_EXT and GND_EXT operationYellow Markers indicate where jumpers should be installed for mixed mode operation.1.2.7LED IndicatorsSW300 – DIP SwitchName DescriptionLED1 +5VDCLED2 Relay 1 “on”LED3 Relay 2 “on”LED4 Relay 3 “on”LED5 Relay 4 “on”LED6 Relay 5 “on”LED7 Relay 6 “on”LED8 Relay 7 “on”LED9 Relay 8 “on”LED10 -。
channel selection request报文-概述说明以及解释
channel selection request报文-概述说明以及解释1.引言1.1 概述概述部分的内容可以对channel selection request报文进行简要介绍，并解释其在通信中的重要性和功能。
概述在无线通信系统中，为了在多个可用频道中选择最佳的通信频道，使通信质量得到改善，通常需要使用特定的请求报文。
其中之一就是channel selection request报文。
该报文在无线通信中起着非常重要的作用，能够帮助设备选择更优的通信频道，提高通信的可靠性和效率。
channel selection request报文是一种用于请求通信频道选择的信息载体。
通过发送这样的报文，设备可以请求系统或其他设备提供合适的通信频道，以进行更好的通信。
这种报文通常包含有关设备当前状态、所需的通信质量要求、可用频道的相关信息等。
在无线通信系统中，选择合适的通信频道是非常重要的。
不同的频道可能有不同的干扰水平、信号强度和可用带宽。
而设备通常会因为环境的变化或其他因素而需要频繁地更换通信频道，以提供稳定可靠的通信。
此时，channel selection request报文就发挥了作用。
它能够向系统或其他设备传达设备的需求，并获取最佳的通信频道。
通过channel selection request报文，设备可以实时监测和评估可用频道的质量，并相应地作出选择。
这样的选择可以基于设备当前的状态、通信需求和系统的建议。
通过优化频道选择，可以降低通信中的信号干扰和质量下降，提高通信的可靠性和效率。
总之，channel selection request报文在无线通信中具有重要的作用。
它能够帮助设备选择最优的通信频道，提高通信质量和效率。
随着无线通信技术的不断发展，该报文的意义和应用也将得到进一步的拓展和优化。
1.2 文章结构文章结构的主要目的是为了清晰地组织和展示文章的内容，使读者能够更好地理解和阅读文章。
锐捷网络 P-720 自治型室内无线接入点 说明书
用户手册P-720自治型室内无线接入点版权声明福建星网锐捷网络有限公司©2008版权所有，保留一切权利。
没有经过本公司书面许可，任何单位和个人不得擅自摘抄、复制本书内容的部分或者全部，并且不得以任何形式传播。
、、、、、、都是福建星网锐捷网络有限公司的注册商标，不得仿冒。
前言读者对象本书适合下列人员阅读：网络工程师技术推广人员网络管理员本书约定命令行格式约定命令行字体采用用Arial，具体相关格式意义如下：粗体：命令行关键字（命令中保持不变必须照输的部分）采用加粗字体表示。
斜体：命令行参数（命令中必须由实际值进行替代的部分）采用斜体表示[ ] ：表示用[ ] 括起来的部分，在命令配置时是可选的。
{ x | y | ... }：表示从两个或多个选项中选取一个。
[ x | y | ... ]：表示从两个或多个选项中选取一个或者不选。
//：由双斜杠开始的行表示为注释行。
各类标志本书采用以下醒目标志来表示在操作过程中应该特别注意的地方，这些标志的意义如下：1.红色底纹，表示警告、注意，提醒操作中须小心注意的事项。
a警告2.黄色底纹，表示约定、参考，对正文的补充说明。
说明3.绿色底纹，表示建议、小窍门、推荐的操作方法。
☺建议符号＜＞：表示按键名称、按钮名称以及操作员从终端输入的信息，如＜Enter＞、＜a＞分别表示回车、小写字母a。
［］：表示人机界面、菜单条、数据表和字段名等，其中多级菜单用“→”隔开。
如［檔→新建］多级菜单，表示［檔］菜单下的［新建］子菜单。
键盘操作＜键1+键2＞：表示在键盘上同时按下几个键。
如＜Ctrl+Alt+A＞表示同时按下“Ctrl”、“Alt”、“A”这三个键。
＜键1，键2＞：表示先按第一键，释放，再按第二键。
如＜Alt，F＞表示先按＜Alt＞键，释放后，紧接着再按＜F＞键。
鼠标操作单击：快速按下并释放鼠标的左键。
双击：连续两次快速按下并释放鼠标的左键。
右击：快速按下并释放鼠标的右键。
能量收集双向中继网络的高能效联合中继选择和功率分配算法
能量收集双向中继网络的高能效联合中继选择和功率分配算法丁长文;杨霖;李高祥【摘要】为了实现双向中继系统在满足传输速率要求时的最小功率消耗,基于功率分割中继协议,在完美和非完美的信道估计两种不同的情况下,提出了能量收集双向中继网络的高能效联合中继选择和功率分配算法,得到了两个信源的最优功率分配和中继节点最优的能量收集比例.仿真结果表明,信道估计误差会增加系统的功率消耗;与传统双向中继比较发现,能量收集双向中继能够实现更少的系统功率消耗.%To achieve the objective of minimizing the system transmit power consumption at required end-to-end rates,we propose the optimal energy-efficient relay selection and power allocation method for energy harvesting two-way relay network based on the power splitting-based relaying protocol when the system has perfect CSI and imperfect CSI,the optimal power allocation of two sources and optimal energy harvesting proportion at relays are formulated.Simulation results show that channel estimation error would increase the total transmit power consumption,and energy harvesting two-way relay network could achieve less power consumption compared to conventional two-way relay network.【期刊名称】《电子学报》【年(卷),期】2017(045)005【总页数】6页(P1124-1129)【关键词】双向中继网络;中继选择;功率分配;能量收集;信道估计误差【作者】丁长文;杨霖;李高祥【作者单位】电子科技大学通信抗干扰国家级重点实验室,四川成都 611731;中国电子科技集团公司第五十四所通信网信息传输与分发技术重点实验室,河北石家庄050081;电子科技大学通信抗干扰国家级重点实验室,四川成都 611731;中国电子科技集团公司第五十四所通信网信息传输与分发技术重点实验室,河北石家庄050081;电子科技大学通信抗干扰国家级重点实验室,四川成都 611731【正文语种】中文【中图分类】TN925协作通信通过建立一个虚拟的多天线输入输出(multiple input multiple output,MIMO)系统实现空间分集,成为近年来无线通信的研究热点[1,2].在协作通信系统中,中继节点用于帮助信源和信宿之间完成信息交流.然而,由于单向中继(one-way relay)系统一般采用半双工模式,所以通信双方需要四个时隙才能完成信息交流,降低了系统的频谱效率.为了弥补这部分频谱效率的损失,研究者先后提出了三个时隙的时分广播[3](time division broadcast,TDBC)模型和两个时隙的多址广播[4](multiple access broadcast,MABC)模型.在双向中继网络[5](two-way relay network,TWRN)中,第一个时隙,两个信源同时向中继发送信号,第二个时隙中继将处理过的信号同时转发给接收端.中继选择(relay selection,RS)和功率分配(power allocation,PA)是提高TWRN系统性能的两种主要方式.文献[6,7]基于瞬时信道信息提出了TWRN的机会中继选择算法,文献[8]基于两条链路的端到端信噪比提出了次优的最大最小中继选择算法.2010年,Veria Havary-Nassab等[9]根据三种不同的准则为TWRN设计了最优的波束成形参数,得到了信源和中继的最优功率分配方案.在此基础上,文献[10]根据其中的信噪比(signal-noise-ratios,SNRs)均衡准则提出了一种最优的联合中继选择和功率分配算法.文献[11]根据其中的最小总功率消耗准则设计了高能效功率选择和功率分配算法.然而,上述文献都只考虑了系统具有完美的信道信息的情况. 在TWRN中,完美信道估计可以彻底消除自干扰,但是实际应用中,信道估计误差总是存在的.文献[12,13]分析了TWRN中信道估计误差对于系统性能的影响,推导出了系统的中断概率和误码率公式.文献[14]研究了非完美信道估计下,解码转发(decode-and-forward,DF)TWRN的联合中继选择和功率分配算法.文献[15]提出了信道估计误差存在下,基于中断概率的放大转发(amplify-and-forward,AF)TWRN的中继选择算法.中继一般通过更换电池或充电补充能量等方式延长使用时间,但是在一些复杂环境中费用昂贵且极不方便.为了解决这一问题,研究人员提出了能量收集(energy harvesting,EH)技术,该技术利用了射频信号同时传输信息和能量的特性[16],中继可以通过收集周围空间的射频信号的能量进行信号处理,极大的延长中继的使用期.Kaya Tutuncuoglu等[17,18]研究了不同中继协议对于EH-TWRN总传输速率的影响,并给出了最优的中继协议选择方案.文献[19]为EH-TWRN设计两种中继协议,分别是基于时间切换中继协议(time switching-based relaying,TSR)和功率分割中继协议(power splitting-based relaying,PSR),其中PSR是指中继将一部分接收信号用于EH,另一部分用于信息检测(Information Detective,ID).文献[20]根据中断概率分析,提出了PSR EH-TWRN在完美信道估计下的联合中继选择和功率分配算法.本文研究了EH-TWRN满足系统传输速率要求时消耗的最少功率.在完美信道估计和非完美信道估计两种情况下,提出了EH-TWRN的高能效联合中继选择和功率分配算法.比较发现,EH-TWRN比传统TWRN能够减少2dBW的功率消耗.仿真结果表明,随着信道估计误差的增大,系统的功率消耗会越来越大；对称传输速率要求消耗功率比非对称传输速率要求要少.EH-TWRN由两个信源(S1,S2)和N个中继(Ri,i=1,2…N)构成,如图1所示.所有的通信节点只安装一根天线,信源之间由于信道质量太差只能通过中继进行信息交流,通信在两个时隙内完成.第一个时隙,两个信源S1和S2同时向中继发送信号,中继Ri接收到一个叠加信号；第二个时隙,Ri将放大的叠加信号转发给接收端.信源Sk(k=1,2)与中继Ri之间均是准静态衰落信道,分布分别满足).信源S1,S2与中继Ri处的高斯白噪声可以表示为和 n～CN(0,σ2).第一个时隙,信源Sk向中继发送信号为sk,中继接收到的信号可以表示为EH-TWRN的中继节点Ri不需要系统分配发送功率,它们通过收集射频信号的能量进行信号处理.基于[19]中的功率分割中继协议,在第一个时隙结束,中继将接收的叠加信号以ρi:1-ρi的比例分割成两个部分,其中一部分被能量收集接收器转换成能量,另一部分被信号处理接收器接收,如图2所示.能量收集接收器接收的信号为x1,i所以中继Ri用于转发信号的功率为余下信号用于中继转发给接收端,可以表示为x2,i第二个时隙,信源S1和S2接收到的信号为:若系统中的中继节点具有完全的信道信息,则信源可以完美的消除自干扰,即公式(5)中得第一项可以删去,则接收信号可以表示为y1=y2=不失一般地,我们可以假定=σ2.两个端到端信噪比表示为:实际应用中,信道估计误差总是存在的,根据文献[12～15],实际和估计信道信息可以建模为:信道误差存在时,信源S1和S2接收信号为:y1=为了简化计算,我们假定信道的估计误差分布是一致的,即.两条链路的端到端信噪比可以表示为公式(11),其中+p2η σ2.实际应用中,,σ2都非常小,显然ξ对系统的性能影响很小,可以舍弃,即信噪比公式可以简写为公式(12).其中.由香农定理可知,系统能够实现的端到端传输速率为minimize:p1+p2利用KKT条件,由公式(8)可得两个信源的发送功率为总的传输功率可以表示为P=p1+p2,将公式(15)代入,对其微分求极值,得到如下方程可以得到最优的能量收集比例利用KKT条件,由是式(12)可将两个信源的发送功率表示为:仿真过程中,本文考虑一个具有两个信源,中继数目N=6的EH-TWRN.噪声功率设为σ2=1,信道系数hi,gi是独立同分布的,系统的总传输速率2bps/Hz≤r≤6bps/Hz,两条链路的通信速率分别为r1,r2,且r= r1+r2.当系统的通信速率对称时,r1=r2；反之,当系统的通信速率非对称时,r1=2r2.图3 和图4分别研究了完美的信道估计和非完美的信道估计情况下,EH-TWRN的最优中继选择和功率分配算法与其他三种算法的比较,图中的信道估计误差为=0.005.情况1为本文提出的算法:最优功率分配,最优中继选择和最优能量收集比例；情况2:最优功率分配,随机中继选择和最优能量收集比例；情况3:最优功率分配,最优中继选择和固定能量收集比例；情况4:最优功率分配,随机中继选择和固定能量收集比例.其中固定能量收集比例为ρ0=0.5.从图3可以看出,系统具有完美的信道信息时,实现相同的总传输速率,情况1消耗的功率最少,分别比情况2,3,4少了0.6dBW,1.6dBW,2.1dBW左右；系统消耗的功率在两条链路的通信速率要求对称(r1=r2)时,比不对称的传输速率要求(r2=2r1)要少3dBW左右.从图4可以看出,系统存在信道估计误差时,满足相同的总传输速率,情况1消耗的功率最少,分别比情况2,3,4少了0.6dBW,2.1dBW,2.6dBW左右；系统消耗的功率在两条链路的通信速率要求对称时,比不对称的传输速率要求要少6dBW左右.图5分析了EH-TWRN和引文[11]中传统TWRN在不同的信道估计误差情况下的功率消耗比较.从图中可以看出,随着信道估计误差的增大,系统实现传输速率要求消耗的功率越来越多；且能量收集双向中继消耗功率要比传统双向中继少2dBW左右.基于绿色通信的理念,为实现最少功率消耗的目的,本文研究了EH-TWRN满足系统传输速率时的联合中继选择和功率分配算法,得到了具有完美和非完美信道信息时各个通信节点的最优中继分配表达式.仿真结果表明,本文提出的算法可以实现最少的系统功率消耗.与传统的TWRN比较,EH-TWRN不但有比传统的双向中继网络更长的使用周期,还能降低系统的功率消耗.研究表明,对称的通信速率要求消耗的系统功率比不对称通信速率要求要少；信道估计误差的存在使得EH-TWRN不能完全的消除自干扰,对系统的功耗有极大的影响,信道估计误差越大,系统满足传输速率要求所消耗的功率越多.丁长文男,1992年生于四川宣汉.电子科技大学通信抗干扰技术国家级重点实验室研究生.研究方向为双向中继网络的性能优化.杨霖男,1977年生于四川宜宾.电子科技大学通信抗干扰技术国家级重点实验室副教授.研究方向为无线与移动通信、现代通信中的信号处理.李高祥男,1993年生于山西临汾.电子科技大学通信抗干扰技术国家级重点实验室研究生.研究方向为中继通信.。
通信专业术语
CR
Connection Request
连接请求
CRCLeabharlann Cyclic Redundancy Check
循环冗余校验
CRO
Cell Reselect Offset
小区重选偏移
CS
Coding Scheme
（信道）编码方式
CS-1
Code Scheme-1
编码模式－1（9.05kbit/s）
CS-2
CELP
Code Excited Linear Prediction
码激励线性预测
CGI
Cell Global Identity
小区全球识别码
CI
Cell Identity
小区识别
CIC
Circuit Identify Code
电路识别码
CIC
Carrier Interface Controller board
双机倒换板
GFBI
Fiber Interface board
光纤接口板
GGSN
Gateway GPRS Support Node
网关GPRS支持节点
GLAP
LAPD Protocol Process board
LAPD协议处理板
GMC2
Inter-Module Communication board
忙时尝试呼叫
BIE
Base station Interface Equipment (board)
基站接口设备（板）
BIOS
Basic Input Output System
基本输入输出系统
BITS
Building Integrated Timing Supply
认知中继网络中信道分配方法
this work，channel allocation for a threenode cognitive relay network was investigated A suboptimal allocation method was proposed when decodeandforward （ DF） was exploited by relay node． It ordered the channels in terms of channel gains， then successively allocated relay channels． The optimal and suboptimal methods were also proposed under amplifyandforward （ AF） protocol． The suboptimal method allocated relay channel by comparing E2E throughput when it was treated as SR or RD link of a dualhop channel with that as a conventional relay channel． Both suboptimal methods decrease the computational complexity with minor throughput loss comparing with the optimal ones． Numerical results were provided to verified the validity of those methods by demonstrate and compare the performance of channel allocation algorithms under AF and DF relaying techniques． We also attempted to compare the computation complexities of optimal and suboptimal algoratios of allocated channels are given． It shows that relay rithms by observing simulation time． For a given channel quantity， channels are allocated as direct transmission channels with a ratio of 1 /3． It is also observed that relay channels are rarely allocated as dualhop channels under AF relaying technique． Key words： cognitive radio； cooperative relaying； channel allocation； throughput