该文档为LTE优化案例高速道路定稿版讲解文档，是一份很不错的参考资料，具有较高参考价值，感兴趣的可以下载看看………………
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上传时间： 2022-03-10
上传用户：ttalli
该文档为LTE排障流程及典型案例讲解文档，是一份很不错的参考资料，具有较高参考价值，感兴趣的可以下载看看………………
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上传时间： 2022-03-10
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该文档为LTE核心网常见故障和投诉案例分析讲解文档，是一份很不错的参考资料，具有较高参考价值，感兴趣的可以下载看看………………
标签： lte
上传时间： 2022-03-10
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ML7820+Mini PCI-E LTE 无线模块是一款适用于 FDD-LTE/TDD-LTE/TD-SCDMA/WCDMA/EDGE/GPRS/GSM 多种网络制式的无线产品，采用标准 Mini PCI-E 封装形式，接口成熟。可以提供短信、通讯簿、高速数据等多种功能，可广泛应用于移动宽带接入、视频监控、手持终端、车载设备等产品。
上传时间： 2022-03-24
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本书详细介绍了LTE物理层相关协议及算法实现，包括LTE协议栈结构、LTE时域、频域和空间域资源、下行参考信号、下行L1、L2控制信道、PDSCH信道、传输模式、上行参考信号、PUCCH信道、PUSCH信道、CSI资源指示、上行HARQ、下行HARQ、SR、BSR、DRX、MAC复用与逻辑信道优先级、上行同步、小区搜索过程、系统信息、随机接入过程、寻呼、载波聚合、SPS、TTI bundling、RLC等相关协议和算法，所涉及的专题内容分析非常细致，非常详尽，能很好地帮助读者深入理解LTE物理层相关协议。
上传时间： 2022-06-01
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现在 5G 备受关注，不过在未来几年中 4G 还会承担蜂窝物联网连接很大的一个份额，也是运营商蜂窝物联网收入的主要来源。其中 LTE Cat1 是介于高速 LTE 类别及低速物联网之间的一种 IoT 指定类别，LTE Cat 1是一个值得关注的分支。从目前蜂窝物联网发展的态势看，LTE Cat 1 承担 4G 物联网连接主力的时机已经开启。
上传时间： 2022-06-05
上传用户：kingwide
AP4000MT模块是一款插针式4G网络模块，支持2*2贴片卡和外置SIM卡，实现UART 转LTE双向透传功能；支持LTE-FDD、LTE-TDD、WCDMA、GSM通信网络，真正实现广 覆盖，长距离，全国漫游，为用户提供实时、稳定、透明数据传输的通信网络。本产品所有 引脚引出，用户使用更加方便；只需通过简单的设置，即可实现串口到网络的双向数据透明 传输。
上传时间： 2022-06-06
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随着个人通信和移动通信技术在世界范围内的迅猛发展，人们对移动通信的服务质量要求也越来越高.WCDMA（Wideband Code Division Multiple Access）作为第三代移动通信系统的三大标准之一，因为具有优良的通信质量和较高的频谱利用率而被广泛应用.在WCDMA接收机中，射频前端电路占有重要的地位，其性能优劣直按影响着接收机的接收灵敏度以及后继信号处理部分的性能.因此，进行WCDMA射频电路的研究和设计具有重要的现实意义.天线和低噪声放大器（LNA）是射频（RF）接收机芯片的重要组成部分。本文在广泛查阅国内、外参考文献的基础上，对微带天线的宽频带技术和LNA的设计原理进行了深入地研究.综合多种宽频带技术，本文采用L形探针馈电与双E形槽贴片相结合的方法，提出了一款适合于WCDMA基站的宽频带微带天线结构。利用电磁仿真软件HFSS对该天线的性能进行了研究，研究了天线贴片尺寸对天线性能的影响。在此基础上，优化设计了适用于WCDMA基站的宽频带微带天线，并对其进行了加工、测试和分析，仿真和测试结果均表明，该天线-10dB回波损耗带宽为520MHz，天线在2GHz的增益为7.88dBi，满足WCDMA基站的要求.另外，本文还根据WCDMA基站对LNA性能的要求，利用仿真软件ADS（Advanced Design System）设计了一款高线性的两级平衡低噪声放大器，给出了电路原理图，并制作了版图，结果表明，该低噪声放大器在1.92GH2~1.98GHz频段增益不低于30dB，噪声系数小于1dB，满足WCDMA的要求，具有一定的实用价值。
上传时间： 2022-06-20
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PrefaceDuring the past years, there has been a quickly rising interest in radio access technologies for providingmobile as well as nomadic and fixed services for voice, video, and data. The difference indesign, implementation, and use between telecom and datacom technologies is also becoming moreblurred. One example is cellular technologies from the telecom world being used for broadband dataand wireless LAN from the datacom world being used for voice-over IP.Today, the most widespread radio access technology for mobile communication is digital cellular,with the number of users passing 5 billion by 2010, which is more than half of the world’s population.It has emerged from early deployments of an expensive voice service for a few car-borne users,to today’s widespread use of mobile-communication devices that provide a range of mobile servicesand often include camera, MP3 player, and PDA functions. With this widespread use and increasinginterest in mobile communication, a continuing evolution ahead is foreseen.This book describes LTE, developed in 3GPP (Third Generation Partnership Project) and providingtrue 4G broadband mobile access, starting from the first version in release 8 and through the continuingevolution to release 10, the latest version of LTE. Release 10, also known as LTE-Advanced,is of particular interest as it is the major technology approved by the ITU as fulfilling the IMTAdvancedrequirements. The description in this book is based on LTE release 10 and thus provides acomplete description of the LTE-Advanced radio access from the bottom up.Chapter 1 gives the background to LTE and its evolution, looking also at the different standardsbodies and organizations involved in the process of defining 4G. It also gives a discussion of the reasonsand driving forces behind the evolution.Chapters 2–6 provide a deeper insight into some of the technologies that are part of LTE and itsevolution. Because of its generic nature, these chapters can be used as a background not only for LTEas described in this book, but also for readers who want to understand the technology behind othersystems, such as WCDMA/HSPA, WiMAX, and CDMA2000.Chapters 7–17 constitute the main part of the book. As a start, an introductory technical overviewof LTE is given, where the most important technology components are introduced based onthe generic technologies described in previous chapters. The following chapters provide a detaileddescription of the protocol structure, the downlink and uplink transmission schemes, and the associatedmechanisms for scheduling, retransmission and interference handling. Broadcast operation andrelaying are also described. This is followed by a discussion of the spectrum flexibility and the associated
上传时间： 2022-07-08
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分享一下中兴全套LTE培训资料，希望对大家有所帮助第一部分链接：http://dl.21ic.com/download/lte-299458.html 第二部分链接：http://dl.21ic.com/download/lte-299459.html 第三部分链接：http://dl.21ic.com/download/lte-299460.html
上传时间： 2022-07-18
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