5G NR Architecture, Technology, Implementation, and Operation of 3GPP NR Standards.

It continues to surprise that the subject of Electrical and Electronic Engineering does not draw more young people into the profession, either at Technician or Graduate Engineer level. It is rewarding, both financially and intellectually, whatever the particular role chosen. There are exciting roles for every personality, both for men and women, in manufacturing, produc- tion, design, R&D, teaching, management...the list is long; and there are opportunities for travel. Above all perhaps, it is a profession that provides service to the community, whether through the technology of a washing machine, a mobile phone, a laptop, satellite communications, the electrical power system, new renewable generating equipment, electric vehicles both on and off rails...that list is even longer. Engineers are the driving force that brings ideas from the drawing board to the marketplace. A widely publicized fact is the decline in uptake of science, technology, engineering and mathematics (STEM) subjects in schools and colleges. Yet businesses regularly report a shortage of young people with STEM skills. How can a modern technological economy thrive without them? Why might this be the case? A recent survey by the Institution of Engineering and Technology suggests a number of issues: •A lack of relevant subject material in the curriculum. •STEM subjects are viewed as hard so that, in an environment where there is an emphasis on getting good grades, there is a perceived difficulty in getting a good grade in STEM. •The learning process is passive with less and less time spent on practical work. •Perceptions about success in STEM are negative, the technologically adept being seen as ‘nerds’. This extends into careers such that students don’t perceive STEM subjects as a passport to lucrative and interesting jobs. An added concern is the lack of women in the profession, the result, perhaps, of outdated views of engineering. We hope then that the subject material of this the eleventh edition of Hughes will help you extend your own knowledge of STEM subjects, and that you will be encouraged to pursue a career in Electrical and Electronic Engineering. When studying gets hard, as it invariably does, remember the huge range of exciting opportunities within the profession and that there is a well-documented and continuing shortage of Technician and Graduate engineers. We might claim that this is the fiftieth birthday edition of Hughes, the preface to the first edition having been written in April 1959. It is an honour to be editors of the book, earlier editions of which illuminated our own xviii PREFACE TO THE ELEVENTH EDITION undergraduate studies, as it passes this landmark. Once again, we acknowl- edge the support of our families during the course of preparation of this new edition, which is dedicated to our respective wives, Wendy and Judy. John Hiley Keith Brown Heriot Watt University, Edinburgh August 2011

本书是一部有关认识无线电技术的系统论著，从认知无线电和软件定义无线电的基础知识开始，分别讨论了认知无线电采用的协议、认知无线电的硬件和软件体系结构、频谱效率、制度问题以及当前应用。本书还涉及了认知无线电的前沿研究，重点讨论了这一技术在未来的发展过程。 通过本书，读者将能掌握认知无线电的背景、应用当今认知无线电技术、理解认知无线电未来的发展趋势。 本书可供从事电子信息工程、通信工程等领域的科技人员和管理人员，以及高等学校的师生阅读、参考。

NoC的倡导者Benini的书，书太大了，分两个部分上传的。

NoC的倡导者Benini的书，书太大了，分两个部分上传的。

spark-tpc-ds-performance-test：使用TPC-DS基准测试Spark SQL性能

HCIP-Datacom-Carrier Core Technology V1.0培训文档与考试大纲

Mindshare公司的USB 3.0的Training PPT，最权威、最详尽、最易懂的USB 3.0 Introduction.

2021版

mind share SATA 存储技术 pdf， 完整版。有水印。The SATA (Serial ATA) interface is intended to expand and eventually replace the parallel ATA interface that has been the standard connection for hard drives and CD-ROM/DVD drives in Personal Computers for nearly twenty years. SATA, a high-speed serial version of ATA, is designed to maintain compatibility with software written for the standard ATA implementation, thus easing the transition to SATA. New advances in SATA provide new capabilities such as Native Command Queuing that improve overall drive performance and greater reli ability. In addition, the latest version of SATA (called SATA II) adds new features such as higher transfer rates, Port Selectors, Port Multipliers, and enclosure services, making it easier to implement low cost, high capacity, storage subsystems for server implementations. This book provides essential information for Systems Engineers, System Validation Engineers, Hardware Designers, and Software Developers. o Serial ATA Storage Technology provides ATA background information necessary to understand the Serial ATA implementation. This book provides detailed information regarding the serial protocol, commands, and electrical interface. A tutorial approach is taken to facilitate thorough understanding, using numerous illustrations, tables and examples. The text is also designed to provide easy to access valuable reference information