<em id="sm4ss"></em> EDGE HSPA和LTE的資料，通信人士必備
上傳時間： 2013-11-26
上傳用戶：hopy
3G Evolution HSPA and LTE for Mobile Broadband
標簽： Evolution Broadband Mobile HSPA
上傳時間： 2017-03-18
上傳用戶：陽光少年2016
3G and Beyond: HSPA Evolution and LTE
上傳時間： 2017-06-15
上傳用戶：頂得柱
WCDMA是數位通訊重要的調變方式之一,本書主要介紹WCDMA在UMTS/HSPA(2G/3G)和LTE(4G)的應用
上傳時間： 2017-07-05
上傳用戶：kristycreasy
無線技術的持續演進發展、全球無線用戶的激增，以及市場對更強大數據承載能力的需求，全面催生了各種新標準的不斷涌現，如寬帶碼分多址 － 高速分組接入 (WCDMA-HSPA)、WCDMA-HSPA+ 以及長期演進技術 (LTE) 等。基于無線服務網絡的數據使用呈指數級增長，從而進一步推動了異構網絡的出現 —— 支持宏蜂窩基站和小型蜂窩基站的分層網絡部署方案。
上傳時間： 2013-11-25
上傳用戶：cc1915
CDMA/EVDO及WCDMA/HSPA是3G部署范圍最廣泛的兩種技術。此兩種技術取決于碼分多址(CDMA)數字無線技術，使許多用戶可以有效地利用同一塊射頻頻譜中的語音和數據通訊.
上傳時間： 2013-10-18
上傳用戶：731140412
This book is intended for the RF planners, to serve as a practical tool in their daily work designing indoor radio distribution systems. It is not a complete book about all the deep aspects and corners of GSM, DCS, UMTS and HSPA networks, or all the core network systems. It is dedicated to the last 10–70 m of the network, the indoor air interface between the mobile user and the indoor mobile network.
標簽： Practical Planning Indoor Guide Radio GSM for
上傳時間： 2020-05-27
上傳用戶：shancjb
The outcome of the 3GPP SAE (system architecture evolution) technical study and specification work is a set of standards that specifies the evolution of the packet core network for GSM/GPRS and WCDMA/HSPA to an all-IP architec- ture and enables a feature-rich ‘common packet core’ for radio accesses devel- oped within 3GPP and also by other standardization fora.
標簽： Evolved Packet Core SAE and the
上傳時間： 2020-06-01
上傳用戶：shancjb
Second-generation telecommunication systems, such as the Global System for Mobile Communications (GSM), enabled voice traffic to go wireless: the number of mobile phones exceeds the number of landline phones and the mobile phone penetration is approaching 100% in several markets. The data-handling capabilities of second-generation systems are limited, however, and third-generation systems are needed to provide the high bit-rate services that enable high-quality images and video to be transmitted and received, and to provide access to the Web with higher data rates.
標簽： Evolution WCDMA UMTS HSPA LTE for and
上傳時間： 2020-06-01
上傳用戶：shancjb
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
上傳時間： 2022-07-08
上傳用戶：
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