分类：无线标准    下载：10    浏览：947    时间：2021-01-07

802.11ac_D2.0 for ISO.pdf此为d2.0版本，802.11ac正式版本下载 IEEE P802.11ac/D2.0 Draft STANDARD for Information Technology— Telecommunications and information exchange between systems— Local and metropolitan area networks— Specific requirements Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications Amendment 4: Enhancements for Very High Throughput for Operation in Bands below 6 GHz Prepared by the 802.11 Working Group of the 802 Committee This document is an unapproved draft of a proposed IEEE Standard. As such, this document is subject to change. USE AT YOUR OWN RISK! Because this is an unapproved draft, this document must not be utilized for any conformance/compliance purposes. Permission is hereby granted for IEEE Standards Committee participants to reproduce this document for purposes of international standardization consideration. Prior to adoption of this document, in whole or in part, by another standards development organization permission must first be obtained from the IEEE Standards Activities Department (stds.ipr@ieee.org). Other entities seeking permission to reproduce this document, in whole or in part, must also obtain permission from the IEEE Standards Activities Department. Abstract: The purpose of the amendment is to improve the 802.11 wireless local area network (LAN) user experience by providing significantly higher basic service set (BSS) throughput for existing WLAN application areas and to enable new market segments for operation below 6 GHz including distribution of multiple multimedia/data streams. Keywords: Multi-user MIMO, Beamforming, Wider Bandwidth

分类：设计开发    下载：0    浏览：941    时间：2017-07-31

【摘要】针对现存的Ad hoc网络路由协议普遍存在延时较大、不能满足实时应用的传输需求的缺陷，在Ad h0 需距离矢量路由(A0Dv)协议的基础上，提出了一种具有实时意识的A-d h0c按需距离矢量路由协议实时Ad hoc按需要距离矢量路由 (RAODV)，并通过仿真实验在不同的网络状态下对RAODV与AODV的性能进行了对比．实验结果表明：在常规网络负载的情况下，RAODV可以获得和AODV同等水平的分组投递率，而数据分组的平均端到端延时和路由负荷则相对要低一些；在网络负载比较大的情况下，两种协议的性能都有所下降，但相对于A0Dv来说，RAODV的性能下降幅度要小很多，并且可以获得更高的分组投递率，更低的数据分组平均端到端延时和路由负荷． 关键词Adhoc网络； Adhoc-R-需距离矢量路由； 实时意识； 实时Adhoc-R-需要距离矢量路由

分类：设计开发    下载：7    浏览：940    时间：2017-08-25

1 序言..............................................................................................................................................3 2 为什么用RT5350和OpenWRT...................................................................................................3 3 开发前准备.................................................................................................................................4 3.1硬件准备............................................................................................................................4 3.2 软件准备...........................................................................................................................5 3.3 虚拟机的安装...................................................................................................................5 3.4 Linux 系统安装...................................................................................................................5 4 OpenWRT 系统的编译..................................................................................................................6 4.1 Openwrt源码下载。.........................................................................................................6 4.2 更新和安装软件包...........................................................................................................6 4.3 配置编译系统...................................................................................................................7 4.3.1 配置CPU和开发板型号........................................................................................7 4.3.2 配置用户界面LuCI.................................................................................................8 4.4 编译..................................................................................................................................9 4.5 烧写程序.........................................................................................................................11 4.5.1 手动设置IP地址.................................................................................................11 4.5.2 Tftp32 设置............................................................................................................11 4.5.3 SecureCRT 设置.....................................................................................................12 4.5.4 开发板上电..........................................................................................................13 4.5.5 烧写程序..............................................................................................................13 5 智能路由器Open WRT的使用.................................................................................................13 5.1 进入配置页面.................................................................................................................13 5.2 配置中文界面和主题.....................................................................................................14 5.3 设置管理密码.................................................................................................................14 5.4 配置LAN 口.....................................................................................................................15 5.5 WIFI配置--AP模式（无线路由器）..............................................................................16 5.6 WIFI配置--客户端模式（无线网卡）............................................................................18 5.7 软件备份和升级.............................................................................................................20

分类：无线安全研究    下载：3    浏览：933    时间：2017-07-12

Wireshark软件下载 第1章  Wireshark的基础知识… 1 1.1  Wireshark的功能… 1 1.1.1  Wireshark主窗口界面… 1 1.1.2  Wireshark的作用… 2 1.2  安装Wireshark. 3 1.2.1  获取Wireshark. 3 1.2.2  安装Wireshark. 5 1.3  Wireshark捕获数据… 11 1.5  认识数据包… 12 1.6  捕获HTTP包… 14 1.7  访问Wireshark资源… 18 1.8  Wireshark快速入门… 21 1.9  分析网络数据… 28 1.9.1  分析Web浏览数据… 28 1.9.2  分析后台数据… 30 1.10  打开其它工具捕获的文件… 31 第2章  设置Wireshark视图… 33 2.1  设置Packet List面板列… 33 2.1.1  添加列… 33 2.1.2  隐藏、删除、重新排序及编辑列… 35 2.2  Wireshark分析器及Profile设置… 41 2.2.1  Wireshark分析器… 41 2.2.2  分析非标准端口号流量… 43 2.2.3  设置Wireshark显示的特定数据类型… 45 2.2.4  使用Profile定制Wireshark. 50 2.2.5  查找关键的Wireshark Profile. 52 2.3  数据包时间延迟… 54 2.3.1  时间延迟… 54 2.3.2  检查延迟问题… 55 2.3.3  检查时间差延迟问题… 57 第3章  捕获过滤器技巧… 61 3.1  捕获过滤器简介… 61 3.2  选择捕获位置… 62 3.3  选择捕获接口… 62 3.4.1  判断那个适配器上的数据… 63 3.4.2  使用多适配器捕获… 63 3.4  捕获以太网数据… 64 3.5  捕获无线数据… 65 3.5.1  捕获无线网络数据方式… 65 3.5.2  使用AirPcap适配器… 66 3.6  处理大数据… 66 3.6.1  捕获过滤器… 66 3.6.2  捕获文件集… 68 3.7  处理随机发生的问题… 70 3.8  捕获基于MAC/IP地址数据… 72 3.8.1  捕获单个IP地址数据… 72 3.8.2  捕获IP地址范围… 74 3.8.3  捕获广播或多播地址数据… 76 3.8.4  捕获MAC地址数据… 77 3.9  捕获端口应用程序数据… 80 3.9.1  捕获所有端口号的数据… 80 3.9.2  结合基于端口的捕获过滤器… 81 3.10  捕获特定ICMP数据… 82

分类：产品资料    下载：0    浏览：932    时间：2021-02-22

RG-AC系列无线控制器AC_RGOS11.1(5)B3版本Web管理手册(V1.0).pdf

分类：工程安装测试    下载：15    浏览：927    时间：2017-08-16

传输指标测试大全（光口、电口、时钟）基本上完成了光口（STM-1、STM-4、STM-16）、电口（1.5M、2M、34M、45M、139M、155M）、时钟三个方面的内容总结，里面包含了全部指标的含义、定义、现有的测试仪表选择、在各个仪表上的测试方法等，总共有2000 种左右的指标测试方法，内容及其丰富和全面。 目 录 1 光口指标............................................................................................................................. 8 1.1 平均发送光功率............................................................................................................8 1.1.1 指标含义...............................................................................................................8 1.1.2 测试仪表...............................................................................................................8 1.1.3 指标定义...............................................................................................................8 1.1.4 测试步骤...............................................................................................................9 1.2 消光比...........................................................................................................................9 1.2.1 指标含义...............................................................................................................9 1.2.2 测试仪表...............................................................................................................9 1.2.3 指标定义...............................................................................................................9 1.2.4 测试装置.............................................................................................................10 1.2.5 测试步骤.............................................................................................................11 1.3 发送机眼图.................................................................................................................13 1.3.1 指标含义.............................................................................................................13 1.3.2 测试仪表.............................................................................................................14 1.3.3 指标定义.............................................................................................................14 1.3.4 测试装置.............................................................................................................14 1.3.5 测试步骤.............................................................................................................15 1.4 激光器工作波长..........................................................................................................17 1.4.1 指标含义.............................................................................................................17 1.4.2 测试仪表.............................................................................................................18 1.4.3 指标定义.............................................................................................................18 1.4.4 测试装置.............................................................................................................19 1.4.5 测试步骤.............................................................................................................19 1.5 最大均方根谱宽..........................................................................................................20 1.5.1 指标含义.............................................................................................................20 1.5.2 测试仪表.............................................................................................................20 1.5.3 指标定义.............................................................................................................20 1.5.4 测试装置.............................................................................................................21 1.5.5 测试步骤.............................................................................................................21 1.6 最大-20dB 谱宽...........................................................................................................21 1.6.1 指标含义.............................................................................................................21 1.6.2 测试仪表.............................................................................................................21 1.6.3 指标定义.............................................................................................................21 1.6.4 测试装置.............................................................................................................22 1.6.5 测试步骤.............................................................................................................22 1.7 最小边模抑制比..........................................................................................................22 1.7.1 指标含义.............................................................................................................22 1.7.2 测试仪表.............................................................................................................22 1.7.3 指标定义.............................................................................................................23 1.7.4 测试装置.............................................................................................................23 1.7.5 测试步骤.............................................................................................................23 1.8 接收机灵敏度..............................................................................................................23 1.8.1 指标含义.............................................................................................................23 1.8.2 测试仪表.............................................................................................................23 1.8.3 指标定义.............................................................................................................24 1.8.4 测试装置图： ......................................................................................................24 1.8.5 测试步骤.............................................................................................................25 1.9 接收机过载功率..........................................................................................................25 1.9.1 指标含义.............................................................................................................25 1.9.2 测试仪表.............................................................................................................25 1.9.3 指标定义.............................................................................................................25 1.9.4 测试装置图： ......................................................................................................26 1.9.5 测试步骤.............................................................................................................26 1.10 光通道代价.................................................................................................................27 1.10.1 指标含义.............................................................................................................27 1.10.2 测试仪表.............................................................................................................27 1.10.3 指标定义.............................................................................................................27 1.10.4 测试步骤.............................................................................................................28 1.11 光输入口允许频偏.......................................................................................................28 1.11.1 指标含义.............................................................................................................28 1.11.2 测试仪表.............................................................................................................28 1.11.3 指标定义.............................................................................................................28 1.11.4 测试装置图： ......................................................................................................29 1.11.5 测试步骤.............................................................................................................29 1.12 输出抖动.....................................................................................................................35 1.12.1 指标含义.............................................................................................................35 1.12.2 测试仪表.............................................................................................................36 1.12.3 指标定义.............................................................................................................36 1.12.4 测试装置图： ......................................................................................................36 1.12.5 测试步骤.............................................................................................................36 1.13 抖动漂移容限..............................................................................................................44 1.13.1 指标含义.............................................................................................................44 1.13.2 测试仪表.............................................................................................................44 1.13.3 指标定义.............................................................................................................44 1.13.4 测试装置图： ......................................................................................................46 1.13.5 测试步骤.............................................................................................................46 2 电口指标............................................................................................................................54 2.1 输出口信号〔包括AIS〕比特率.................................................................................54 2.1.1 指标含义.............................................................................................................54 2.1.2 测试仪表.............................................................................................................55 2.1.3 指标定义.............................................................................................................55 2.1.4 测试配置图..........................................................................................................56 2.1.5 测试步骤.............................................................................................................56 2.2 输出口信号波形和参数...............................................................................................59 2.2.1 指标含义.............................................................................................................59 2.2.2 测试仪表.............................................................................................................59 2.2.3 指标定义.............................................................................................................59 2.2.4 测试配置图..........................................................................................................68 2.2.5 测试步骤.............................................................................................................68 2.3 STM-1 输出信号眼图和功率.......................................................................................69 2.3.1 指标含义.............................................................................................................69 2.3.2 测试仪表.............................................................................................................69 2.3.3 指标定义.............................................................................................................70 2.3.4 测试步骤.............................................................................................................70 2.4 输入口允许频偏..........................................................................................................71 2.4.1 指标含义.............................................................................................................71 2.4.2 测试仪表.............................................................................................................71 2.4.3 指标定义.............................................................................................................71 2.4.4 测试配置图..........................................................................................................72 2.4.5 测试步骤.............................................................................................................72 2.5 输入口允许衰减..........................................................................................................76 2.5.1 指标含义.............................................................................................................76 2.5.2 测试仪表.............................................................................................................76 2.5.3 指标定义.............................................................................................................76 2.5.4 测试配置图..........................................................................................................77 2.5.5 测试步骤.............................................................................................................77 2.6 输入口抗干扰能力.......................................................................................................81 2.6.1 指标含义.............................................................................................................81 2.6.2 测试仪表.............................................................................................................81 2.6.3 指标定义.............................................................................................................81 2.6.4 测试配置图..........................................................................................................81 2.6.5 测试步骤.............................................................................................................81 2.7 输入口、输出口反射衰减............................................................................................86 2.7.1 指标含义.............................................................................................................86 2.7.2 测试仪表.............................................................................................................86 2.7.3 指标定义.............................................................................................................86 2.7.4 测试配置图..........................................................................................................86 2.7.5 测试步骤.............................................................................................................87 2.8 输入口、输出口过压保护能力....................................................................................87 2.8.1 指标含义.............................................................................................................87 2.8.2 测试仪表.............................................................................................................87 2.8.3 指标定义.............................................................................................................87 2.8.4 测试配置图..........................................................................................................88 2.8.5 测试步骤.............................................................................................................88 2.9 输入抖动漂移容限.......................................................................................................88 2.9.1 指标含义.............................................................................................................88 2.9.2 测试仪表.............................................................................................................88 2.9.3 指标定义.............................................................................................................89 2.9.4 测试配置图..........................................................................................................91 2.9.5 测试步骤.............................................................................................................92 2.10 输出抖动.....................................................................................................................95 2.10.1 指标含义.............................................................................................................95 2.10.2 测试仪表.............................................................................................................96 2.10.3 指标定义.............................................................................................................96 2.10.4 测试配置图..........................................................................................................97 2.10.5 测试步骤.............................................................................................................97 2.11 映射抖动...................................................................................................................100 2.11.1 指标含义...........................................................................................................100 2.11.2 测试仪表...........................................................................................................101 2.11.3 指标定义...........................................................................................................101 2.11.4 测试配置图........................................................................................................101 2.11.5 测试步骤...........................................................................................................101 2.12 结合抖动...................................................................................................................106 2.12.1 指标含义...........................................................................................................106 2.12.2 测试仪表...........................................................................................................106 2.12.3 指标定义...........................................................................................................106 2.12.4 测试配置图........................................................................................................108 2.12.5 测试步骤...........................................................................................................108 3 SEC（SDH 设备时钟）指标............................................................................................111 3.1 频率准确度...............................................................................................................111 3.1.1 指标含义...........................................................................................................111 3.1.2 测试仪表...........................................................................................................112 3.1.3 指标定义...........................................................................................................112 3.1.4 测试步骤...........................................................................................................112 3.2 牵引入和牵引出范围.................................................................................................113 3.2.1 指标含义...........................................................................................................113 3.2.2 测试仪表...........................................................................................................113 3.2.3 指标定义...........................................................................................................113 3.2.4 测试步骤...........................................................................................................113 3.3 保持性能...................................................................................................................114 3.3.1 指标含义...........................................................................................................114 3.3.2 测试仪表...........................................................................................................114 3.3.3 测试步骤...........................................................................................................114 3.4 噪声产生－锁定方式的漂移......................................................................................115 3.4.1 指标含义...........................................................................................................115 3.4.2 测试仪表...........................................................................................................115 3.4.3 指标定义...........................................................................................................115 3.4.4 测试步骤...........................................................................................................116 3.5 噪声产生－输出抖动.................................................................................................117 3.5.1 指标定义...........................................................................................................117 3.5.2 测试仪表...........................................................................................................118 3.5.3 测试步骤...........................................................................................................118 3.6 噪声容限－漂移容限.................................................................................................119 3.6.1 指标含义...........................................................................................................119 3.6.2 测试仪表...........................................................................................................119 3.6.3 指标定义...........................................................................................................119 3.6.4 测试步骤...........................................................................................................122 3.7 噪声容限－抖动容限.................................................................................................122 3.7.1 测试仪表...........................................................................................................122 3.7.2 指标定义...........................................................................................................123 3.7.3 测试步骤...........................................................................................................123 3.8 噪声传递...................................................................................................................124 3.8.1 指标含义...........................................................................................................124 3.8.2 测试仪表...........................................................................................................124 3.8.3 指标定义...........................................................................................................124 3.8.4 测试步骤...........................................................................................................125 3.9 短期相位瞬变响应.....................................................................................................126 3.9.1 指标含义...........................................................................................................126 3.9.2 测试仪表...........................................................................................................126 3.9.3 测试步骤...........................................................................................................126 3.10 长期相位瞬变响应.....................................................................................................128 3.10.1 指标含义...........................................................................................................128 3.10.2 测试仪表...........................................................................................................129 3.10.3 测试步骤...........................................................................................................129 3.11 输入信号瞬断的相位响应..........................................................................................130 3.11.1 测试仪表...........................................................................................................130 3.11.2 指标定义...........................................................................................................130 3.11.3 测试步骤...........................................................................................................130 3.12 相位不连续性............................................................................................................131 3.12.1 指标含义...........................................................................................................131 3.12.2 测试仪表...........................................................................................................131 3.12.3 指标定义...........................................................................................................132 3.12.4 测试步骤...........................................................................................................132

分类：设计开发    下载：2    浏览：923    时间：2017-08-02

郑 军，樊 艳 (浙江林学院浙江临安311300) 摘要：TR—UWB系统采用自相关接收检测技术作为一种非最优接收机，其结构简单、性能优良。对TR—UWB系统的自相关接收检测技术进行改进，通过合并有限数目多径信号以提高接收信号能量，同时对接收信号做平均处理抑制噪声，从而提高系统性能。采用高斯近似法得到系统的误码率，最后在多径信道环境下进行仿真，验证了接收机性能的改进和误码率分析的正确。 关键词：TR—UWB；自相关接收机；多径；噪声抑制

分类：设计开发    下载：0    浏览：920    时间：2017-08-01

【文件原名】：改进基于WEP协议的无线局域网的安全 【资料成文时间】：2008年 【语言】：中文 【页数】：3 【作者】：李宇 缪海燕   【文件格式】：pdf 【摘要或目录】：目前的无线局域网（WEAN）都支持IEEE．802．11和802．11b标准，这些标准都以WEP（wired Equivalent Privacy）协议为基础来进行加密和认证。分析了WEP协议存在的安全漏洞，为架设更高服务质量的WEAN提出了一种安全改进的方案。 关 键 词:无线局域网 加密 认证 IEEE 802.11 AES

分类：产品资料    下载：0    浏览：909    时间：2021-09-04

1 前言 2 明确需求 3 现场工勘 3.1. 有线侧工勘 3.2. 无线侧工勘 4 方案制定 优化及部署 4.1. 有线侧带宽规划 4.2. 有线侧vlan及ip地址规划 4.3. 无线侧接入用户数及AP数量规划 4.4. 无线侧用户带宽需求 4.5. 无线侧信道规划及优化 5 无线侧AP优化方案 5.1. 功率调整 5.2. 空口限速 5.3. 接入用户数限制 5.4. 漫游控制 6 无线侧AP硬件部署 6.1. AP部署一般性原则 6.2. Commsky AP部署 7 OFFICE 验证测试结果 7.1. AP2.4G Radio Co-channel性能对比测试 8 海创园报告厅测试 8.1. 测试设备与环境 8.2. 测试详情

分类：设计开发    下载：0    浏览：905    时间：2017-07-31

张红 (沈阳理工大学通信与网络工程中心，辽宁沈阳110168) 摘要：ODMRP协议是无线自组网环境下的一种按需式组播路由协议。提出了一种基于优先权竞争机制的ODMRP协议改进，即PR-ODMRP路由协议。该协议继承了0DMRP协议的按需式路由发现和更新。并采用优先权竞争机制，大大减少了路由迂回并缩短了分纽投递延迟，提高了网络性能。通过对PR～ODMRP协议的模拟仿真实验比较，验证了协议的改进效果。 关键词：Ad hoe网络；优先权；组播路由

分类：基础和培训    下载：0    浏览：903    时间：2021-02-20

基本配置任务及过程 1.准备工作 控制器启动配置和升级控制器软件版本 熟悉控制器配置界面 2.  连接AP到控制器上 配置任务 思科CSSC无线客户端的安装和简单配置 构建一个OPEN和一个WEP的无线网络 构建一个简单WEB认证的无线网络 构建一个支持本地EAP认证的无线网络 构建一个用ACS做AAA认证的无线网络

分类：产品资料    下载：0    浏览：902    时间：2021-02-22

RG-AC 系列无线控制器命令手册 AC_RGOS 11.1(5)B3 命令手册-WLAN 基础配置 命令手册-WLAN 射频 命令手册-WLAN 安全 命令手册-WLAN QOS 命令手册-WLAN 组网 命令手册-接入服务 命令手册-IP 地址及应用 命令手册-IP 路由 命令手册-安全 命令手册-系统配置