With the rapid growth of the wireless mobile applications, wireless voice has begun to challenge wireline voice, whereas the desire to access e-mail, surf the Web or download music (e.g., MP3) wirelessly is increasing for wireless data. While second generation (2G) cellular wireless systems, such as cdmaOne1, GSM2 and TDMA3, introduced digital technology to wireless cellular systems to deal with the increasing demand for wireless applications, there is still the need for more spectrally efficient technologies for two reasons. First, wireless voice capacity is expected to continue to grow. Second, the introduction of high-speed wireless data will require more bandwidth.
標(biāo)簽： Wireless Systems Mobile Beyond and 3G
上傳時(shí)間： 2020-05-30
上傳用戶：shancjb
The telecommunications industry has seen a rapid boost within the last decade. New realities and visions of functionalities in various telecommunications networks have brought forward the concept of next-generation networks (NGNs). The competitions among operators for support- ing various services, lowering of the cost of having mobile and cellular phones and smartphones, increasing demand for general mobility, explosion of digital traffic, and advent of convergence network technologies added more dynamism in the idea of NGNs. In fact, facilitating con- vergence of networks and convergence of various types of services is a significant objective of NGNs.
標(biāo)簽： Next-Generation Converged Networks
上傳時(shí)間： 2020-05-31
上傳用戶：shancjb
The first practical examples of mobile communications were used in many countries like the USA, the UK and Germany in military services, and played a significant role in the First World War to transfer important information from the front to headquarters to take further actions. Good and secure wireless communications were an important need for all military services – army, navy and air force. In this respect, the Second World War was a big experimental battlefield for the development and evolution of mobile radio. It was in the interests of governments that after the Second World War the military investment should be paid back by civilian use, and all western European countries started their so-called first generation of mobile communication networks.
標(biāo)簽： Multimedia Business Mobile The
上傳時(shí)間： 2020-06-01
上傳用戶：shancjb
This book addresses the issues on the development of next generation CDMA technologies and contains a lot of information on the subject from both the open literature and my own research activities in the last fifteen years.
標(biāo)簽： Technologies Generation Next CDMA The
上傳時(shí)間： 2020-06-01
上傳用戶：shancjb
This book is written for engineers involved in the operation, control, and planning of electric power systems. In addition, the book provides information and tools for researchers working in the fields of power system security and stability. The book consists of two volumes. The first volume provides traditional techniques for the stability analysis of large scale power systems. In addition, an overview of the main drivers and requirements for modernization of the traditional methods for online applications are discussed. The second volume provides techniques for online security assessment and corrective action studies. In addition, the impact of variable generation on the security of power systems is considered in the second volume. The first volume may be considered as a background builder while the second volume is intended for the coverage of edge techniques and methods for online dynamic security studies.
上傳時(shí)間： 2020-06-07
上傳用戶：shancjb
This edition of Digital Image Processing is a major revision of the book. As in the 1977 and 1987 editions by Gonzalez and Wintz, and the 1992, 2002, and 2008 editions by Gonzalez and Woods, this sixth-generation edition was prepared with students and instructors in mind. The principal objectives of the book continue to be to provide an introduction to basic concepts and methodologies applicable to digital image processing, and to develop a foundation that can be used as the basis for further study and research in this field. To achieve these objectives, we focused again on material that we believe is fundamental and whose scope of application is not limited to the solution of specialized problems. The mathematical complexity of the book remains at a level well within the grasp of college seniors and first-year graduate students who have introductory preparation in mathematical analysis, vectors, matrices, probability, statistics, linear systems, and computer programming. The book website provides tutorials to support readers needing a review of this background material
標(biāo)簽： Processing Digital Image
上傳時(shí)間： 2021-02-20
上傳用戶：
Head.First.Python 中文版不只是一門(mén)python入門(mén)書(shū)，還會(huì)交給我們andriod手機(jī)，google app engine等創(chuàng)建應(yīng)用程序。
標(biāo)簽： python
上傳時(shí)間： 2022-06-27
上傳用戶：
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
標(biāo)簽： 4g 移動(dòng)通信
上傳時(shí)間： 2022-07-08
上傳用戶：
VIP專區(qū)-嵌入式/單片機(jī)編程源碼精選合集系列（104）資源包含以下內(nèi)容：1. mips命令集詳解.2. 數(shù)碼相框原理圖,ZXDP-010 (8302+720).3. CBM2090單片8BIT 16BIT共板原理圖.4. 紅外線遙控是目前使用最廣泛的一種通信和遙控手段。由于紅外線遙控裝置具有體積小、功耗低、功能強(qiáng)、成本低等特點(diǎn).5. 時(shí)間觸發(fā)嵌入式系統(tǒng)設(shè)計(jì)模式 使用8051系列微控制器開(kāi)發(fā)可靠應(yīng)用.6. 關(guān)于555時(shí)基電路原理以及應(yīng)用的介紹說(shuō)明.7. 一個(gè)關(guān)于s3c2410_LCD_640*480的驅(qū)動(dòng)程序.8. ipod——touch攻略.9. SDMMC 源碼 SD、MMC卡的讀寫(xiě)程序.10. 嵌入式試驗(yàn)開(kāi)發(fā)平臺(tái)簡(jiǎn)介.11. Mobile phone MMI design reference..12. 我寫(xiě)的stv2248 芯片的驅(qū)動(dòng)程序.13. 應(yīng)用于S60平臺(tái)的示例程序.14. YAFFS (Yet Another Flash File System) is now in its second generation and provides a fast robust fil.15. 關(guān)于h264的演示 內(nèi)容不錯(cuò) 希望大家喜歡..16. Michael Barr是Netrino公司的總裁兼創(chuàng)始人.17. 2006年軟考的嵌入式系統(tǒng)設(shè)計(jì)師考試題及答案.18. S3C2440開(kāi)發(fā)板原理圖以及成品圖片.是硬件開(kāi)發(fā)工程師的好參考資料.19. 一個(gè)可以實(shí)現(xiàn)嵌入式視頻監(jiān)控系統(tǒng)的服務(wù)器軟件。.20. 一個(gè)可以實(shí)現(xiàn)嵌入式視頻監(jiān)控系統(tǒng)的最新版客戶端軟件。.21. 東軟嵌入式高級(jí)C培訓(xùn)(2007)).22. 最新的uffs,目前是1.1.2版本.23. NokiaSeries40Book1,介紹了40平臺(tái)的手機(jī)開(kāi)發(fā).24. 數(shù)控編程開(kāi)發(fā)事例,對(duì)數(shù)控機(jī)床的直線和圓戶進(jìn)行插補(bǔ),.25. 用STR710控制串口及CC1100進(jìn)行無(wú)線通信.26. 非常不錯(cuò)的單片機(jī)開(kāi)發(fā)板原理圖.27. s3c44b0bootloader分析.28. 以 DSpic30f4011為 SPI SLAVE的范例程式.29. 漢字與字符顯示函數(shù)。對(duì)于任一主函數(shù).30. 最詳細(xì)最專業(yè)的MODBus協(xié)議介紹。 給MODBus總線開(kāi)發(fā)的朋友們一些參考！.31. 本文較為詳細(xì)的介紹了雙CPU的C51系統(tǒng)設(shè)計(jì)中.32. c51的時(shí)鐘芯片讀寫(xiě)函數(shù).33. 本書(shū)介紹了PCI局部總線的基本概念,功能,操作規(guī)則和使用方法.34. Intel公司的閃存轉(zhuǎn)換層(Flash Translaion Layer)規(guī)范指導(dǎo)文件.35. h.261 player with running h.261,p24,h26 file.36. I2C接口協(xié)議.37. First of all we would like to thank God Almighty for giving us the strength and confidence in pursi.38. 2008年最新出版Silverlight及Blend學(xué)習(xí)電子書(shū)教程合集.39. 利用VB與VC程式整合開(kāi)發(fā)實(shí)現(xiàn)影像物體分類辨識(shí)的PLC輸送帶系統(tǒng).40. 凌陽(yáng)公司機(jī)sunplus1002在這個(gè)芯片下.
標(biāo)簽： 光電子
上傳時(shí)間： 2013-06-25
上傳用戶：eeworm
To get started with Code Composer Studio? (CCStudio) Development Tools, review the first two sections of this book. The remaining sections contain more detailed information on specific processes and tools. To determine whether you can utilize these features, see the online help provided with the Code Composer Studio installation.
上傳時(shí)間： 2013-07-24
上傳用戶：zaizaibang
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