分类：设计开发    下载：2    浏览：790    时间：2017-08-09

2007年的研究文章，回首一看，其预测挺准。 􀂃WiMAX技術簡介 􀂃產業與市場現況 􀂃WiMAX五年內難以取代ADSL/Cable市場地位 􀂃WiMAX五年內難以大幅搶佔行動通訊市場 􀂃探尋WiMAX的機會點 􀂃結論

分类：工程安装测试    下载：0    浏览：1083    时间：2017-08-09

中国无线门户-2007年9月专题文章，更多专题请搜索。

分类：设计开发    下载：0    浏览：723    时间：2017-08-09

摘要：介绍了WiMAX 16d 网络的架构和规划要点,对WiMAX 16d 组网的经验进行了分析和说明, 并提出了面向未来网络建设的相关建议。 关键词：WiMAX IEEE 802.16 QoS 非视距

分类：设计开发    下载：0    浏览：742    时间：2017-08-09

邵长虎, 徐友云, 张　乐 (上海交通大学电子工程系, 上海200240) 摘　要: 卷积Turbo 码是很灵活的码字, 帧长和码率的变化范围很大, 这也是选它做为WiMax(World Interoperability for Microwave Access) 标准中的信道编码方案之一的主要原因, 它采用递归系统卷积码作为子码, 相对于经典Turbo 码, 它具有编码效率高, 相同复杂度译码器下纠错性能好以及译码时延小等优点。详细介绍了卷积Turbo 码的编译码器结构, 提出译码方案, 并且给出仿真性能曲线。 关键词: WiMax ; 卷积Turbo 码; 交织器; 环形网格图

分类：设计开发    下载：0    浏览：759    时间：2017-08-09

Abstract — In this paper, the performance of WiMAX network with DL SIMO, DL MIMO and UL SIMO is analyzed via system simulations. Two data traffic models are considered, namely web browsing (HTTP) and full buffer sessions, operating in multi path fading channels such as the ITU Pedestrian-B and Vehicular-A channels. The control channel coverage and reliability of WiMAX using realistic overhead is also analyzed in this paper.

分类：设计开发    下载：0    浏览：685    时间：2017-08-09

摘要：以WiMAX 的网络架构与3GWCDMA PS 的系统架构作对比, 对3GWCDMA PS 域的发展方向进行了讨论。 关键词：WCDMA PS WiMAX NWG SAE

分类：其它    下载：0    浏览：716    时间：2017-08-09

 Intel关于wimax技术的介绍

分类：设计开发    下载：0    浏览：547    时间：2017-08-09

ABSTRACT IEEE 802.16e, known as Mobile WiMAX, has gained much attention recently for its capability to support high transmission rates in cellular environments and QoS for different applications. Beyond what the standard can define, in order to effectively support video streaming, VoIP, and data services, proprietary radio resource management, including multiconnection assignment, scheduling controls, and call admission controls, are essential. In this study we evaluate the downlink performance of a Mobile WiMAX cellular system with different radio resource management, especially the scheduler for QoS control and the implementation of multiconnection for streaming applications.

分类：设计开发    下载：0    浏览：758    时间：2017-08-09

Mobile WiMAX是对固定wimax的修订，增加了支持移动性的能力。完完全全成为一种移动通信技术。在当前几种3G技术体制纠缠不清，3G市场发展不明朗的今天，Mobile wimax能够得到如此关注是与其本身的技术优势和市场拓展策略分不开的。

分类：设计开发    下载：0    浏览：792    时间：2017-08-09

ABSTRACT The IEEE 802.16 standard (commonly known as WiMax) has emerged as one of the strongest contenders for broadband wireless access technology. At the same time, with the steady growth of real-time services such as voice over IP and video on demand, supporting delay sensitive streaming data overWiMax is becoming crucial. In this article we use commonly used techniques such as forward error correction (FEC) and automatic repeat request (ARQ) tosupport streaming services over WiMax without violating what has already been standardized. In particular, we look at the flexible features provided by media access control (MAC) layer of WiMax and exploit them for providing better streaming performance. We use the channel state information to dynamically construct the MAC packet data units. The sizes of these units are thusly determined such that the packet dropping probability is minimized without compromising the goodput. The simulation results presented show the performance enhancements of the proposed ARQ-enabled adaptive algorithm for streaming data.

分类：设计开发    下载：0    浏览：786    时间：2017-08-09

Abstract—The voice-over-Internet protocol (VoIP) service is expected to be widely supported in wireless mobile networks, though its feasibility and capacity have not been studied in relation to the emerging IEEE 802.16e orthogonal frequency division multiple access (OFDMA) system. Using analytical and simulation models that we developed, we present the downlink performance of VoIP services over an IEEE 802.16e OFDMA system. Index Terms—IEEE 802.16e, voice-over-Internet protocol (VoIP), broadband wireless access, queueing analysis

分类：其它    下载：6    浏览：1286    时间：2017-08-09

第一部分概述.......................................................................................................................................3 一、前言............................................................................................................................................3 二、WiMAX技术介绍......................................................................................................................4 三、朗讯WiMAX系统介绍.............................................................................................................6 3.1概述........................................................................................................................................6 3.2系统结构................................................................................................................................7 3.3支持的业务.............................................................................................................................8 3.4朗讯在WiMAX系统上的优势...............................................................................................9 第二部分 中国联通WiMAX实验网方案建议......................................................................................10 四、挑战与机遇...............................................................................................................................10 五、WiMAX业务分析....................................................................................................................10 5.1目标客户分析....................................................................................................................... 11 5.2 WiMAX主要接入方式.......................................................................................................... 11 5.3 WiMAX应用场景和发展阶段..............................................................................................13 六、WiMAX网络与现有IP网络的配合......................................................................................13 6.1 WiMAX设备与现有网络的连接..........................................................................................13 6.2 WiMAX无线宽带城域网用户、终端的认证、计费..........................................................14 6.3核心网带宽及QoS保证.......................................................................................................14 第三部分朗讯WiMAX系列产品说明..........................................................................................15 七、朗讯WiMAX系列产品说明...................................................................................................15 附件一、WiMAX业务发展建议.......................................................................................................21 附件二、朗讯WiMAX无线城域网的工程施工建议........................................................................23 附件三、WiMAX无线覆盖项目系统工程分工界面.......................................................................26 附件四、WiMAX无线覆盖项目基站安装连接示意图...................................................................28 附件五、基站点勘测数据表..........................................................................................................29 附件六、WiMAX基站选址原则及注意事项...................................................................................30