CoMMUnication protocols – for short protocols – form the basis for the opera- tion of computer networks and teleCoMMUnication systems. They are behavior conventions which describe how CoMMUnication systems interact with each other in computer networks. Protocols define the temporal order of the interactions and the formats of the data units exchanged. CoMMUnication protocols comprise a wide range of different functions and mechanisms, such as the sending and receiv- ing of data units, their coding/decoding, error control mechanisms, timer control, flow control, and many others.
标签： Engineering Protocol
上传时间： 2020-05-31
上传用户：shancjb
Radio propagation measurements and channel modelling continue to be of fundamental importance to radio system design. As new technology enables dynamic spectrum access and higher data rates, radio propagation effects such as shadowing, the presence of multipath and frequency dispersion are the limiting factors in the design of wireless CoMMUnication systems. While there are several books covering the topic of radio propagation in various frequency bands, there appears to be no books on radio propagation measurements, which this book addresses at length.
标签： Propagation Measurement Radio
上传时间： 2020-06-01
上传用户：shancjb
In a cellular CoMMUnication system, a service area or a geographical region is divided into a number of cells, and each cell is served by an infrastructure element called the base station through a radio interface. Management of radio interface related resources is a critical design component in cellular CoMMUnications.
标签： Management Resource Radio
上传时间： 2020-06-01
上传用户：shancjb
It was only a few years ago that “ubiquitous connectivity” was recognized as the future of wireless CoMMUnication systems. In the era of ubiquitous connectivity, it was expected that the broadband mobile Internet experience would be pervasive, and seamless connectivity on a global scale would be no surprise at all. The quality of service would be guaranteed no matter when/where/what the users wanted with the connectivity. Connectivity would even be extended to object-to-object CoMMUnication, where no human intervention was required. All objects would become capable of autonomous CoMMUnication.
标签： Protocols Radio LTE-A LTE for and
上传时间： 2020-06-01
上传用户：shancjb
An understanding of the policies, regulations, standards and techniques of radio spectrum management is useful to those who manage and administrate it, to operators, to equipment providers and to the users of wireless CoMMUnication (i.e., all of us). For many years the author has been deeply involved in ruling the RF spectrum at the national, regional and global levels. The book is based on the professional experience of the author, his academic courses, presenta- tions and tutorials in five continents. The book reflects this legacy and will be of use to engineers, lawyers and economists, who serve the global industry of the wireless world; in it they may find solutions to the problems they frequently encounter.
标签： Management Spectrum Radio
上传时间： 2020-06-01
上传用户：shancjb
This book emphasis on multi-user MIMO CoMMUnication. It covers a collection of the major topics and issues in multi-user MIMO systems. Recent Trends in Multi-user MIMO CoMMUnications provides a tutorial overview of the latest technologies and research keys related to multi-user CoMMUnication.
标签： Multiuser Recent Trends MIMO
上传时间： 2020-06-01
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Digital mobile wireless CoMMUnication and the Internet have undergone a fantastic growth in the last few years and, despite originating from two different worlds, they are converging. This convergence corresponds to the evolution of mobile systems towards the highest broadband data transmissions (GSM, EDGE/GPRS, UMTS then HSDPA), while the computing world gets equipped with wireless technologies such as Wi-Fi or Wi-Max.
标签： Reconfigurable Systems Mobile Radio
上传时间： 2020-06-01
上传用户：shancjb
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
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The unguided transmission of information using electromagnetic waves at radio frequency (RF) is often referred to as wireless CoMMUnications, the first demonstration of which took place at the end of the 19th cen- tury and is attributed to Hertz. The technology was, shortly thereafter, commercialised by, amongst others, Marconi in one of the first wire- less CoMMUnication systems, i.e., wireless telegraphy. In the first half of the 20th century the technology was developed further to enable more than the mere transmission of Morse code. This first resulted in uni- directional radio broadcasting and several years later also in television broadcasting.
标签： Imperfections RF
上传时间： 2020-06-01
上传用户：shancjb
Developers, manufacturers and marketers of products incorporating short- range radio systems are experts in their fields—security, telemetry, medical care, to name a few. Often they add a wireless interface just to eliminate wires on an existing wired product. They may adapt a wireless subsystem, which is easy to integrate electrically into their system, only to find that the range is far short of what they expected, there are frequent false alarms, or it doesn’t work at all. It is for these adapters of wireless subsystems that this book is primarily intended.
标签： CoMMUnication Short-range Wireless
上传时间： 2020-06-01
上传用户：shancjb
