One traditional view of how WIRELESS networks evolve is of a continuous, inevitable progres- sion to higher link speeds, combined with greater mobility over wider areas. This standpoint certainly captures the development from first and second generation cellular systems focused on voice support, and the early short-range WIRELESS data networks, through to today’s 3G cellular and mobile broadband systems; there is every confidence that the trend will continue some way into the future.
上傳時間： 2020-05-26
上傳用戶：shancjb
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
標簽： Propagation Antennas
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The current methods of communications are becoming less relevant under today’s growing demand for and reliance on constant connectivity. Of decreasing relevance are the models of a single radio to perform a single task. The expansion of WIRELESS access points among coffee shops, airports, malls, and other public arenas is opening up opportunities for new services and applications.
上傳時間： 2020-05-26
上傳用戶：shancjb
The growing interest for high data rate WIRELESS communications over the last few decades gave rise to the emergence of a number of wideband WIRELESS systems. The resulting scarcity of frequency spectrum has been forcing WIRELESS system designers to develop methods that will push the spectral efficiency to its limit.
標簽： Algorithms Baseband Receiver
上傳時間： 2020-05-26
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The past decades have witnessed wide demand and applications for WIRELESS commu- nications in the human body area, that is, in the immediate environment around a human body. These demands and applications especially focus on WIRELESS transmis- sion and networking of personal information for user identification, healthcare and medical applications.
標簽： communications modeling channel Body area
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上傳用戶：shancjb
Employing multiple transmit and receive antennas, namely using multi-input multi-output (MIMO) systems, has proven to be a major breakthrough in providing reliable WIRELESS communication links. Since their invention in the mid-1990s, transmit diversity, achieved through space-time coding, and spatial multiplexing schemes have been the focus of much research in the area of WIRELESS communications.
標簽： Communication Systems Coding MIMO for
上傳時間： 2020-05-26
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The aim of this book, the first of two volumes, is to present selected research that has been undertaken under COST Action IC0902 ‘‘Cognitive Radio and Net- working for Cooperative Coexistence of Heterogeneous WIRELESS Networks’’ (http://newyork.ing.uniroma1.it/IC0902/). COST (European Cooperation in Sci- ence and Technology) is one of the longest-running European frameworks sup- porting cooperation among scientists and researchers across Europe.
上傳時間： 2020-05-26
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The idea of writing this book entitled “Cognitive Networked Sensing and Big Data” started with the plan to write a briefing book on WIRELESS distributed computing and cognitive sensing. During our research on large-scale cognitive radio network (and its experimental testbed), we realized that big data played a central role. As a result, the book project reflects this paradigm shift. In the context, sensing roughly is equivalent to “measurement.”
標簽： Cognitive Networked Sensing Data Big and
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Today’s WIRELESS services have come a long way since the roll out of the conventional voice-centric cellular systems. The demand for WIRELESS access in voice and high rate data multi-media applications has been increasing. New generation WIRELESS communication systems are aimed at accommodating this demand through better resource management and improved transmission technologies.
標簽： Radio Cognitive Software Defined
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上傳用戶：shancjb
WIRELESS technology has been evolving at a breakneck speed. The total number of cell-phones in use (as of 2011) was over 6 billion for a 7 billion world population [1] constituting 87% of the world population. Additionally, with user convenience be- coming paramount, more and more functions are being implemented WIRELESSly.
標簽： Front-Ends Cognitive Receiver Radio
上傳時間： 2020-05-26
上傳用戶：shancjb
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