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IEEE-802.11

  • Fundamentals+of+WiMAX+Understanding

    Fundamentals of WiMAX was consciously written to appeal to a broad audience, and to be of value to anyone who is interested in the IEEE 802.16e standards or wireless broadband networks more generally. The book contains cutting-edge tutorials on the technical and theoretical under- pinnings to WiMAX that are not available anywhere else, while also providing high-level over- views that will be informative to the casual reader.

    标签: Understanding Fundamentals WiMAX of

    上传时间: 2020-05-27

    上传用户:shancjb

  • Implementing+802.11

    Communication, a word that many associate with modern technology, actually has nothing to do with technology. At its core, communication involves nothing more than the spoken or written word, and symbolic languages like art and music. Technology has become synonymous with communication because technology has historically been the method by which communication to or by the general population takes place. 

    标签: Implementing 802.11

    上传时间: 2020-05-27

    上传用户:shancjb

  • Millimeter+Wave+Communication+Systems

    This book presents millimeter wave communication system design and analysis at the level to produce an understanding of the interaction between a wireless system and its front end so that the overall performance can be predicted. Gigabit wireless commu- nications require a considerable amount of bandwidth, which can be supported by millimeter waves. Millimeter wave technology has come of age, and at the time of writing the standards of IEEE 802.15.3c, WiGig, Wireless HD TM , and the European Computer Manufacturers Association have recently been finalized. 

    标签: Communication Millimeter Systems Wave

    上传时间: 2020-05-28

    上传用户:shancjb

  • MIMO-OFDM Wireless Communications with MATLAB

    MIMO-OFDM is a key technology for next-generation cellular communications (3GPP-LTE, Mobile WiMAX, IMT-Advanced) as well as wireless LAN (IEEE 802.11a, IEEE 802.11n), wireless PAN (MB-OFDM), and broadcasting (DAB, DVB, DMB). This book provides a comprehensive introduction to the basic theory and practice of wireless channel modeling, OFDM, and MIMO, with MATLAB ? programs to simulate the underlying techniques on MIMO-OFDMsystems.Thisbookisprimarilydesignedforengineersandresearcherswhoare interested in learning various MIMO-OFDM techniques and applying them to wireless communications.

    标签: Communications MIMO-OFDM Wireless MATLAB with

    上传时间: 2020-05-28

    上传用户:shancjb

  • Mobile WiMAX Toward Broadband Wireless

    Wireless metropolitan area networks (WirelessMANs) is emerging as a promising broadband wireless access (BWA) technology to provide high-speed, high bandwidth efficiency and high-capacity multimedia services for residential as well as enterprise applications. It is observed that WirelessMAN (e.g., WiMAX) is even regarded as a 4G technology. For the success of the WirelessMANs, international standardization organiza- tions are very actively specifying the standards IEEE 802.16, ETSI HiperMAN and Korea WiBro.

    标签: BroadbanMobile WiMAX Toward Broadband Wirelessd Wireless Mobile Toward WiMAX

    上传时间: 2020-05-30

    上传用户:shancjb

  • 802.11无线网络权威指南+第二版(中文版),Wifi 无线技术资料的权威著作

    这是一本关于wifi 无线通信技术的权威书,里面详解的说明物理层,MAC 层,交互,加密与解密,是学习wifi技术的最好的书。 可以多看多次 理解更好。

    标签: wifi 无线技术

    上传时间: 2022-03-24

    上传用户:

  • SI4463 无线收发器模块驱动程序

    SI4463收发器性能如下:频率范围= 119-1050 MHz接收灵敏度= -126 dBm调制(G)FSK,4(G)FSK,(G)MSK OOK最大输出功率+20 dBm(Si4464 / 63)低有功功耗10/13 mA RX18 mA TX + 10 dBm(Si4460)超低功耗模式30 nA关机,50 nA待机数据速率= 100 bps至1 Mbps快速的唤醒和跳跃时间电源= 1.8至3.6 V优异的选择性能60 dB相邻通道1 MHz时75 dB阻塞天线分集和T / R开关控制高可配置的数据包处理程序TX和RX 64字节FIFO自动频率控制(AFC)自动增益控制(AGC)低BOM低电量检测器温度感应器20引脚QFN封装IEEE 802.15.4g兼容

    标签: si4463 无线收发器

    上传时间: 2022-06-19

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  • 无线局域网接收机射频前端集成电路设计

    近年来,随着个人数据通信的发展,功能强大的便携式数据终端和多媒体终端得到了广泛的应用。为了实现用户在任何时间、任何地点均能实现数据通信的目标,要求传统的计算机网络由有线向无线、由固定向移动、由单一业务向多媒体发展,这一要求促进了无线局域网技术的发展。在互联网高速发展的今天,可以认为无线局域网将成为未来的发展趋势.本课题采用TSMC 0.18um CMOS工艺实现用于IEEE 802.1la协议的5GHz无线局域网接收机射频前端集成电路一包括低噪声放大器(Low-Noise Amplifier,LNA)和下变频器电路(Downconverter),低噪声放大器是射频接收机前端的主要部分,其作用是在尽可能少引入噪声的条件下对天线接收到的微弱信号进行放大。下变须器是接收机的重要组成部分,它将低噪声放大器的输出射频信号与本振信号进行混频,产生中频信号。论文对射频前端集成电路的原理进行了分析,比较了不同电路结构的性能,给出了射频前端集成电路的电路设计、版图设计、仿真结果和测试方案,仿真结果表明,此次设计的射频前端集成电路具有低噪声、低功耗的特点,其它性能也完全满足设计指标要求

    标签: 无线局域网 接收机

    上传时间: 2022-06-20

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  • PoE以太网供电交换机

    4个10/100TXPoE以太网供电端口和2个10/100TX冗余上连端口输入电压DC24V,提供DC22VPoE输出(非标准PoE)输入电压DC48V,提供DC48V PoE输出(IEEE802.3af标准PoE)输入电压DC55V,每端口提供高达30W高电量输出(IEEE802.3at标准)合计输出功率高达100W(IEEE802.3at标准)支持强制供电模式支持IEEE 802.3af PoE设备检测和电量分级支持以小时为单位的周计划PoE排程管理支持LPLD,PD设备状态检测和自动重启功能支持专利多环冗余技术(MSRTM),系统自愈时间小于5ms内建WDT可让系统自动重启铝合金外壳符合IP-31工业防护标准支持-25~60℃宽温工作环境,适用恶劣工业现场JetNet 3706是一款智能Web管理型工业PoE Plus以太网供电交换机,针对工业PoE应用而设计,适合那些需要每端口30W电量输出,DC24V电源需求的应用,搭建IP监控系统或无线接入网。JetNet 3706不仅支持IEEE802.3af PoE标准,也满足IEEE802.3at PoE Plus准标准(802.3af加强版),使各PoE端口能提供高达30W电量。

    标签: poe 以太网 供电交换机

    上传时间: 2022-06-24

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  • 新的大功率PoE标准—PoE

    以太网供电(PoE)标准由IEEE802.3f任务组于2003年制定,并已被业界所广泛接受。目前,各家主要的制造商均可提供具PoE端口的网络交换机。IP电话一直是PoE普及的推动力,不过PoE也广泛应用于其他多种应用,如无线接入点(WAP)、保安摄像机,RFID标签阅读器等,以及用来为出口标志、甚至电吉他等不那么主流的应用供电。为了遵循IEEE802.3af规范,受电设备(PD)上的PoE功耗被限制为12.95W,而这反过来又限制了可从以太网电缆供电的应用范围。于是,在2006年,为了克服PoE对功率预算的限制,并将其推向新的市场,IEEE成立了一个新的任务组,旨在探求提高该国际电源标准的功率限值方法。IEEE802.3a任务组应运而生,并在不久之后发布了POE+标准。

    标签: 大功率 poe 标准 mdash

    上传时间: 2022-06-24

    上传用户: