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twenty-year

  • GRE数学宝典(英文原版GRE Math Bible)

    GRE 数学圣经,下面是详细的英文介绍: Comprehensive Prep for GRE Math Every year, students pay $1,000 and more to test prep companies to prepare for the math section of the GRE. Now you can get the same preparation in a book. Although the GRE math section is difficult, it is very learnable. GRE Math Bible presents a thorough analysis of GRE math and introduces numerous analytic techniques that will help you immensely, not only on the GRE but in graduate school as well.

    标签: GRE Math 数学

    上传时间: 2015-08-22

    上传用户:东大寺的

  • 激活工具heu

    1.软件安装步骤   a)运行光盘中客户软件\CCS5000 CCS2.20\CCS2.2\SETUP.EXE,进入引导界面;   b)选择Install下的Code Composer Studio进入安装界面; c)按照默认的方式安装,装在C:\ti下。 d)安装软件补丁:运行光盘客户软件\c5000ccs2.20\CCS FOR C5000-补丁\C5000-2.20.00-FULL-to-C5000-2.20.18-FULL.EXE,进入安装界面,然后按照默认的方式安装即可。 e)重新启动计算机,按DEL键进入CMOS的设置界面CMOS SETUP UTILITY,将Integrated Peripherals中的Onboard Paralell Port改为378/IRQ,Parrallel Port Mode改为EPP,保存退出。 f)进入windows后会出现“CCS 2(‘ C5000) ”、 “Setup  CCS 2(‘ C5000) ”两个图标。

    标签: 激活

    上传时间: 2017-01-03

    上传用户:jmw8637

  • Antennas and Propagation

    This book has grown out of my teaching and research at the University of Surrey and out of my previous experiences in companies such as Philips, Ascom and Motorola. It is primarily intended for use by students in master’s level and enhanced final-year under- graduate courses who are specialising in communication systems and wish to understand the principles and current practices of the wireless communication channel, including both antenna and propagation aspects

    标签: Propagation Antennas

    上传时间: 2020-05-26

    上传用户:shancjb

  • Fundamentals+of+Telecommunications+2nd+ed

    This book is an entry-level text on the technology of telecommunications. It has been crafted with the newcomer in mind. The twenty-one chapters of text have been prepared for high-school graduates who understand algebra, logarithms, and the basic principles of electricity such as Ohm’s law. However, it is appreciated that many readers require support in these areas. Appendices A and B review the essentials of electricity and mathematics up through logarithms. This material was placed in the appendices so as not to distract from the main theme, the technology of telecommunication systems. Another topic that many in the industry find difficult is the use of decibels and derived units. Appendix C provides the reader a basic understanding of decibels and their applications. The only mathematics necessary is an understanding of the powers of ten

    标签: Telecommunications Fundamentals 2nd of ed

    上传时间: 2020-05-27

    上传用户:shancjb

  • Large-scale+Antenna+Systems

    To meet the future demand for huge traffic volume of wireless data service, the research on the fifth generation (5G) mobile communication systems has been undertaken in recent years. It is expected that the spectral and energy efficiencies in 5G mobile communication systems should be ten-fold higher than the ones in the fourth generation (4G) mobile communication systems. Therefore, it is important to further exploit the potential of spatial multiplexing of multiple antennas. In the last twenty years, multiple-input multiple-output (MIMO) antenna techniques have been considered as the key techniques to increase the capacity of wireless communication systems. When a large-scale antenna array (which is also called massive MIMO) is equipped in a base-station, or a large number of distributed antennas (which is also called large-scale distributed MIMO) are deployed, the spectral and energy efficiencies can be further improved by using spatial domain multiple access. This paper provides an overview of massive MIMO and large-scale distributed MIMO systems, including spectral efficiency analysis, channel state information (CSI) acquisition, wireless transmission technology, and resource allocation.

    标签: Large-scale Antenna Systems

    上传时间: 2020-05-27

    上传用户:shancjb

  • Mobile and Wireless Communications

    There are few technologies that have had a more profound effect on people’s lives than mobile communications. As recently as twenty years ago no one had a mobile phone, while today 1.4 billion men, women and children depend on them. This now exceeds the number of landline users, where it took the preceding one hundred years to reach the 1 billion mark. The ability to make mobile voice calls turns out to be the answer to a deeply felt need across different cultures who simply want to communicate.

    标签: Communications Wireless Mobile and

    上传时间: 2020-05-30

    上传用户:shancjb

  • Multi-Carrier+Spread+Spectrum+2007

    Since the principle of multi-carrier code division multiple access (MC-CDMA) was simultaneously proposed by Khaled Fazel et al. and Nathan Yee et al. at the IEEE International Symposium on Personal, Indoor and Mobile Radio Communications (PIMRC) in the year 1993, multi-carrier spread spectrum (MC-SS) has rapidly become one of the most wide spread independent research topics on the field of mobile radio communications. Therefore, the International Workshop on Multi-Carrier Spread Spectrum (MC-SS) was initiated in the year 1997. Multi-carrier and spread spectrum systems with their generic air interface and adaptive technologies are considered as potential candidates to fulfill the requirements of next generation mobile communications systems.

    标签: Multi-Carrier Spectrum Spread 2007

    上传时间: 2020-05-31

    上传用户:shancjb

  • Principles of Spread-Spectrum Communication

    The continuing vitality of spread-spectrum communication systems and the devel- opment of new mathematical methods for their analysis provided the motivation to undertake this new edition of the book. This edition is intended to enable readers to understand the current state-of-the-art in this field. Almost twenty percent of the materialinthiseditionisnew, includingseveralnewsections, anewchapteronadap- tive arrays and filters, and a new chapter on code-division multiple-access networks.

    标签: Spread-Spectrum Communication Principles of

    上传时间: 2020-05-31

    上传用户:shancjb

  • Resource Allocation and MIMO

    Mobile and wireless communication systems are a prominent communications technology of the twenty-first century with profound economic and social impacts in practically all parts of the world. The current state of wireless communication systems allows for a much wider scope of applications than what it used to be originally, that is, to be a mobile extension of the public switched telephone network.

    标签: Allocation Resource MIMO and

    上传时间: 2020-06-01

    上传用户:shancjb

  • Spread-Spectrum Communication Systems 3rd

    The continuing vitality of spread-spectrum communication systems and the devel- opment of new mathematical methods for their analysis provided the motivation to undertake this new edition of the book. This edition is intended to enable readers to understand the current state-of-the-art in this field. Almost twenty percent of the materialinthiseditionisnew, includingseveralnewsections, anewchapteronadap- tive arrays and filters, and a new chapter on code-division multiple-access networks. The remainder of the material has been thoroughly revised, and I have removed a considerable amount of material that has been superseded by more definitive results.

    标签: Spread-Spectrum Communication Systems 3rd

    上传时间: 2020-06-01

    上传用户:shancjb