Description: 接入网是电信网的重要组成部分。接入网技术的发展，应用和普及令人瞩目，深受世界各国的广泛重视。本书全面介绍了各种接入网技术。全书共分七章，分别介绍了：接入网基本知识、铜线接入技术，电缆调制解调器接入技术，光接入技术，无线接入技术、接入网接口及其协议、接入网网管技术。
在本书的编写过程中，力求做到内容新颖、知识全面、由浅入深、通俗易懂，注重基本概念和基本原理。本书适用于通信工程专业的本科学生和从事相关专业的技术人员使用。-Access Network is a telecommunications network, an important part of. Access network technology development, application and popularization of eye-catching, by the extensive attention of the world. This book gave a comprehensive account of the various access network technologies. Book is divided into seven chapters, namely the introduction: basic knowledge of Access Network, copper access technologies, cable modem access technology, optical access technologies, wireless access technology, access network interface and its agreements, access network management technology. In the book Platform: |
Size: 1796096 |
Author:jj |
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Description: 3G的下一代无线网络通讯标准(4G)WIMAX的各个部分的工程标准详细说明-The next generation 3G wireless network communication standard (4G) WIMAX all part of the engineering standards in detail Platform: |
Size: 6068224 |
Author:QQ |
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Description: 麻省理工学院课件，无线链路，光链路，是电子通信专业经典难点之一，并附有习题-Massachusetts Institute of Technology courseware, wireless links, optical links, is the electronic communications professional classical one of the difficulties, with Exercises Platform: |
Size: 256000 |
Author:华子 |
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Description: 无线光通信；卷积交织；Viterbi并行译码
在误码率为10的负6次方
时，相对于最佳阈值
判决有约6.9dB的编码增益，与完美交织下的编码性能仅相差0.3dB-Wireless Optical Communication Convolutional Interleaver Viterbi decoding in parallel at the bit error rate of 10 negative 6 power when compared with the optimal threshold judgments about 6.9dB coding gain, with a perfect under-cutting is only a difference of 0.3 Coding performance dB Platform: |
Size: 145408 |
Author:张同星 |
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Description: 无线光通信技术具有通信容量大、传输速率高等众多优点, 在许多场合都有重要的应用, 是现代通信技术研究的一个热点。由于脉冲位置调制 ( PPM ) 有较高的平均功率利用率和抗干扰能力, 故 PPM是无线光通信系统中常用的调制方式。在研究 PPM调制技术的基础上, 就基于 FPG A的无线光通信 PPM调制系统进行设计, 并用 V H D L语言完成了系统的设计和仿真。仿真结果表明, 该设计具有正确性和合理性。-Wireless optical communication technology has the communications capacity, many of the benefits of higher transmission rates, in many occasions have important applications in modern communication technologies are a hot research. Because of pulse position modulation (PPM) have a higher average power utilization and anti-interference ability, so PPM is a wireless optical communication system commonly used in modulation. PPM modulation technique in the study on the basis of FPG A based on wireless optical communication PPM modulation system design, and VHDL language achieve the system design and simulation. Simulation results show that the rationality of the design right. Platform: |
Size: 194560 |
Author:朱雯 |
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Description: 华为新员工技术培训教材--主要是通信技术方面.包括ATM技术,SDH光技术,程控交换技术,数据通信技术,无线通信技术,接入网技术等.-Huawei new staff of technical training materials- mainly communication technology. Including ATM technology, SDH optical technology, program-controlled switching technology, data communication technology, wireless communication technology, access network technology. Platform: |
Size: 22510592 |
Author:suyufeng |
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Description: 无线光通信中的几种常见调试方式的误码率性能-the performance of bit error rate of some modulation schemes in wireless optical communication Platform: |
Size: 1024 |
Author:黄爱萍 |
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Description: 这是一个关于在无线光通信中，实现PPM编码调制的程序。-This is a study on wireless optical communications, coded modulation to achieve PPM procedures. Platform: |
Size: 1024 |
Author:qiu_zhi8866 |
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Description: ofdm 信号的产生，matlab程序仿真及图形实例，用于光通信或者无线通信的信号模拟-ofdm signals generated, matlab simulation and graphic examples of procedures for optical communications or wireless communications, analog signal Platform: |
Size: 5120 |
Author:yan |
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Description: matlab实现的OFDM运用于ROF光纤无线通信系统的仿真，用的是4QAM调制，LS信道估计，还包括Optisystem的仿真，是毕设的仿真，非常珍贵。-matlab achieve ROF optical fiber used in the OFDM wireless communication system simulation, using 4QAM modulation, LS channel estimation, the simulation also includes Optisystem is a complete set of simulation, very precious. Platform: |
Size: 25600 |
Author:Ruby |
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Description: OFDM信号在光纤无线通信系统中传输性能的研究，包括不同频率的4QAM、16QAM，是毕设资料，非常珍贵。-OFDM signal in optical wireless communication system transmission performance in the study, including different frequencies 4QAM, 16QAM, complete set of information is very valuable. Platform: |
Size: 105472 |
Author:Ruby |
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Description: this one of good thesis work on optical wireless communication book .It will help for wireless radio people Platform: |
Size: 6028288 |
Author:sanatan7 |
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Description: 全自动可遥控旗帜升降系统以AVR单片机为核心，由PWM对电机进行变频调速，高精度光电编码器测速，闭环式电路控制。能够利用按键输入相应的指令控制旗帜的升降，还可以实现在特定位置停留的功能。利用LCD可以显示旗帜的实时高度和相应的控制命令，用LED指示旗帜是否处于半旗状态，具有语音提示报警功能，并可利用无线模块实现遥控功能，准确均匀地实现旗帜的升降。-Fully automatic remote control system to lift the banner of AVR microcontroller as the core, the PWM frequency of the motor speed, high-precision optical encoder speed, closed loop control circuit. Able to use the appropriate command control of key input flag down, you can realize the function in a specific location to stay. LCD can display the banner using real-time high and the corresponding control commands, use the LED is directed at half-mast the flag state of alarm with voice prompts, and can use the wireless module for remote control functions, to achieve uniform and accurate movements of the flag. Platform: |
Size: 349184 |
Author:刘强 |
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Description: 自适应OFDM系统能根据信道估计得到信道的状态信息，自适应地调节发送端传输参数，从而提高系统的性能。其中OFDM是一种多载波调制技术，具有频谱利用率高、抗多径干扰、抗突发噪声差错等优点。
在VLC中引入自适应OFDM技术，可以提升系统的容量，提高传输质量，使系统具有更大灵活性，改善系统性能。在无线光通信领域对该技术的研究已成为个重要的方向。根据现有的研究人员所发表的文献，大多是基于基础性和理论性的研究，对可见光通信技术与自适应OFDM的研究甚少。(The adaptive OFDM system can obtain the channel state information according to the channel estimation, and adaptively adjust the transmission parameters of the transmitter, so as to improve the system performance. Among them, OFDM is a multi carrier modulation technology, which has the advantages of high spectrum utilization, anti multipath interference, anti burst noise, error and so on.
The introduction of adaptive OFDM technology in VLC, can improve the system capacity, improve the quality of transmission, the system has more flexibility, improve the performance of the system. In the field of wireless optical communication, the research of this technology has become an important direction. According to the literature published by existing researchers, most of them are based on basic and theoretical research, and few studies have been done on visible light communication technology and adaptive OFDM.) Platform: |
Size: 3072 |
Author:Mortimerr
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