Download or read book Channel Coding and Estimation for Ultra Wideband Radios written by and published by . This book was released on 2004 with total page 4 pages. Available in PDF, EPUB and Kindle. Book excerpt: In order to access the viability of ultra-wideband communications for military applications, a framework for accurately analyzing system performance is required. This research project addresses the need for a tractable, outdoor ultra-wideband (UWB) channel model which will provide the foundation for performance evaluation an and the examination of various design tradeoffs that exist at the physical layer The other major thrusts of the research include channel estimation and error control coding which are essential to the successful realization of and implementation of UWB communication systems.

Download or read book 2003 Assessment of the Office of Naval Research s Marine Corps Science and Technology Program written by National Research Council and published by National Academies Press. This book was released on 2004-04-01 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Office of Naval Research (ONR) funds research across a broad range of scientific and engineering disciplines in support of the Navy and Marine Corps. To ensure that its investments are serving those ends and are of high quality, ONR requires each of its departments to undergo annual review. Since 1999, the Naval Expeditionary Warfare Department of ONR has requested that the NRC conduct these reviews. This report presents the results of the second review of the Marine Corps Science and Technology program. The first review was conducted in 2000. The 2003 assessment examines the overall Marine Corps S&T program, the littoral combat future naval capability, the core thrusts of the program, and basic research activities.

Download or read book Modulation Coding and RF Components for Ultra wideband Impulse Radio written by David Christopher Laney and published by . This book was released on 2003 with total page 326 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding Ultra Wide Band Radio Fundamentals written by Maria-Gabriella Di Benedetto and published by Prentice Hall. This book was released on 2004 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt: Combines the theory and practical - with simulation tools for the understanding and design of Ultra Wide Band (UWB) communication networks. UWB is a revolutionary technology - recently receiving FCC approval. The UWB standard has several advantages including high transmission rates and the ability to carry signals while accounting for solid matter interference. Provides a theoretical analysis of the fundamentals of UWB radio communications supported by practical examples developed using computer simulations using MATLAB. UWB devices can be used for a variety of communications applications involving the transmission of very high data rates over short distances without suffering the effects of multi-path interference. UWB communication devices could be used to wirelessly distribute services such as phone, cable, and computer networking throughout a building or home. These devices could also be utilized by police, fire, and rescue personnel to provide covert, secure communications devices. The book presents the theoretical analysis of fundamental principles of Ultra Wide Band (UWB) radio communications supported by practical examples developed using computer simulation. The simulation codes are provided in the form of user-customizable MATLAB) functions which are included in the book. The examples are inserted within the theoretical treatise in order to help and guide the reader in the understanding of analytical principles. The book covers issues related to both UWB signal transmission and UWB network organization. In particular, the topics covered by the book are: principles of UWB radio transmission and modulation (PPM, PAM and DS-UWB for Impulse Radio, OFDM for the multi-band approach), UWB channel modeling, receiver structures, Multi User Interference modeling, Localization, Network organization: advanced Medium Access Control and routing design strategies.

Download or read book 2000 Assessment of the Office of Naval Research s Marine Corps Science and Technology Program written by National Research Council and published by National Academies Press. This book was released on 2000-12-14 with total page 103 pages. Available in PDF, EPUB and Kindle. Book excerpt: This review of the Science and Technology (S&T) program of the Office of Naval Research's (ONR's) Expeditionary Warfare Operations Technology Division, Code 353, comes at a time of considerable change in the Marine Corps and in ONR, which are currently in the midst of significant transitions. The Marine Corps is making plans to equip and train for engaging in a new style of warfare known as Operational Maneuver From the Sea (OMFTS) and for performing a wide variety of missions in urban settings, ranging from humanitarian assistance to combat and mixes of these suggested by the term three-block war. During 1999, ONR assumed management of that portion of the Marine Corps S&T program that had not been assigned several years earlier to the Marine Corps Warfighting Laboratory (MCWL). In 2002, control of most of ONR's advanced development funding (6.3), and of much of its exploratory development funding (6.2), will move from ONR's line divisions, of which Code 353 is one of many, to 12 new program offices, each dedicated to demonstrating technologies for future naval capabilities (FNCs). Given these changes, it is not surprising that some of the projects inherited recently by ONR, and assessed by the Committee for the Review of ONR's Marine Corps Science and Technology Program under the auspices of the Naval Studies Board of the National Research Council, differed from the customary ONR project and were more akin to preacquisition or acquisition support than to S&T. It is also not surprising that Code 353 could not articulate its plans for future investments clearly and concisely, given the current uncertainty about the content of and funding level for FNCs. The Marine Corps S&T program supports the five imperatives for technology advancement that the Marine Corps Combat Development Command (MCCDC) has identified as prerequisites for the transition to OMFTS: maneuver, firepower, logistics, training and education, and command and control. The committee supports investment in these areas and, in the report's discussions and recommendations, follows the five imperatives.

Download or read book Energy Scalable Radio Design written by Marian Verhelst and published by Springer Science & Business Media. This book was released on 2009-07-14 with total page 249 pages. Available in PDF, EPUB and Kindle. Book excerpt: Smart energy management, both at design time and at run time, is indispensable in modern radios. It requires a careful trade-off between the system’s performance, and its power consumption. Moreover, the design has to be dynamically reconfigurable to optimally balance these parameters at run time, depending on the current operating conditions. Energy Scalable Radio Design describes and applies an energy-driven design strategy to the design of an energy-efficient, highly scalable, pulsed UWB receiver, suitable for low data rate communication and sub-cm ranging. This book meticulously covers the different design steps and the adopted optimizations: System level air interface selection, architectural/algorithmic design space exploration, algorithmic refinement (acquisition, synchronization and ranging algorithms) and circuit level (RTL) implementation based on the FLEXmodule-concept. Measurement results demonstrate the effectiveness and necessity of the energy-driven design strategy.

Download or read book Ultra Wideband Communications written by Liuqing Yang and published by . This book was released on 2004 with total page 448 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra Wideband Radio Technologies for Communications Localization and Sensor Applications written by Reiner Thomä and published by BoD – Books on Demand. This book was released on 2013-03-13 with total page 514 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-Wideband Radio (UWB) earmarks a new radio access philosophy and exploits several GHz of bandwidth. It promises high data rate communication over short distances as well as innovative radar sensing and localization applications with unprecedented resolution. Fields of application may be found, among others, in industry, civil engineering, surveillance and exploration, for security and safety measures, and even for medicine. The book considers the basics and algorithms as well as hardware and application issues in the field of UWB radio technology for communications, localization and sensing based on the outcome of DFG's priority-funding program "Ultra-Wideband Radio Technologies for Communications, Localization and Sensor Applications (UKoLoS)".

Download or read book Ultra Wideband Wireless Communications and Networks written by Xuemin Shen and published by John Wiley & Sons. This book was released on 2007-01-11 with total page 322 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn about Ultra-wideband (UWB) transmission - the most talked about application in wireless communications. UWB wireless communication is a revolutionary technology for transmitting large amounts of digital data over a wide spectrum of frequency bands with very low power for a short distance. This exciting new text covers the fundamental aspects of UWB wireless communications systems for short-range communications. It also focuses on more advanced information about networks and applications. Chapters include: Radio Propagation and Large Scale Variations, Pulse Propagation and Channel Modelling, MIMO (Multiple Input, Multiple Output) RF Subsystems and Ad Hoc Networks. Focuses on UWB wireless communications rather than UWB radar, which has been covered before. Provides long and short-term academic and technological value. Teaches readers the fundamentals, challenges and up-to-date technical processes in this field.

Download or read book Channel Estimation and Equalization for Ultra wideband Communications with Pulse Position Modulation written by Xiaofan Yang and published by . This book was released on 2005 with total page 94 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this thesis we consider the design of an ultra-wideband (UWB) receiver. We investigate channel estimation and equalization algorithms of ultra-wideband radio with pulse position modulation. We propose a completely blind channel estimation method based on the first-order cyclostationarity in the received signal. In contrast to other blind UWB channel estimation methods, our algorithm exhibits low complexity and is robust for channels with large numbers of taps. We investigate equalization by introducing a discrete-time equivalent model for time-hopping pulse-position-modulated UWB systems. This equivalent model views the transmitter-channel-receiver system at symbol rate. The computational complexity is reduced by processing the received data at symbol rate instead of chip rate. Symbol detection techniques including decision feedback equalization and maximum likelihood detection are evaluated and compared with correlation detection. Chapter 1 is an introduction to UWB systems, including the development of the technology, current research topics, and recent applications. Chapters 2 and 3 study the channel estimation and equalization problems, respectively. Chapter 4 summarizes the thesis and presents possible future work.

Download or read book Synchronization Techniques for Digital Receivers written by Umberto Mengali and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 532 pages. Available in PDF, EPUB and Kindle. Book excerpt: Synchronization is a critical function in digital communications; its failures may have catastrophic effects on the transmission system performance. Furthermore, synchronization circuits comprehend such a large part of the receiver hardware that their implementation has a substantial impact on the overall costs. For these reasons design engineers are particularly concerned with the development of new and more efficient synchronization structures. Unfortunately, the advent of digital VLSI technology has radically affected modem design rules, to a point that most analog techniques employed so far have become totally obsolete. Although digital synchronization methods are well established by now in the literature, they only appear in the form of technical papers, often concentrating on specific performance or implementation issues. As a consequence they are hardly useful to give a unified view of an otherwise seemingly heterogeneous field. It is widely recognized that a fundamental understanding of digital synchronization can only be reached by providing the designer with a solid theoretical framework, or else he will not know where to adjust his methods when he attempts to apply them to new situations. The task of the present book is just to develop such a framework.

Download or read book Ultra Wideband Communications written by Mohammad Abdul Matin and published by BoD – Books on Demand. This book was released on 2011-07-27 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book has addressed few challenges to ensure the success of UWB technologies and covers several research areas including UWB low cost transceiver, low noise amplifier (LNA), ADC architectures, UWB filter, and high power UWB amplifiers. It is believed that this book serves as a comprehensive reference for graduate students in UWB technologies.

Download or read book Synchronization and DE Modulation for Ultra wideband Access written by Xiliang Luo and published by . This book was released on 2006 with total page 382 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book UWB Communication Systems written by Maria-Gabriella Di Benedetto and published by Hindawi Publishing Corporation. This book was released on 2006 with total page 513 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultrawideband (UWB) communication systems offer an unprecedented opportunityto impact the future communication world. The enormous available bandwidth, the wide scope of the data rate / rangetrade-off, as well as the potential for very low-cost operation leading topervasive usage, all present a unique opportunity for UWB systems to impactthe way people and intelligent machines communicate and interact with theirenvironment. The aim of this book is to provide an overview of the state of the art of UWBsystems from theory to applications. Due to the rapid progress of multidisciplinary UWB research, such an overviewcan only be achieved by combining the areas of expertise of severalscientists in the field. More than 30 leading UWB researchers and practitioners have contributed tothis book covering the major topics relevant to UWB. These topics includeUWB signal processing, UWB channel measurement and modeling, higher-layerprotocol issues, spatial aspects of UWB signaling, UWB regulation andstandardization, implementation issues, and UWB applications as well aspositioning. The book is targeted at advanced academic researchers, wireless designers, and graduate students wishing to greatly enhance their knowledge of allaspects of UWB systems

Download or read book Capacity Coding and Modulation for Ultra wideband Radio and Multi element array Systems written by Chunyu Bi and published by . This book was released on 2003 with total page 264 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Ultra Wideband Pulse based Radio written by Wim Vereecken and published by Springer Science & Business Media. This book was released on 2009-04-22 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Today’s booming expanse of personal wireless radio communications is a rich source of new challenges for the designer of the underlying enabling te- nologies. Personal communication networks are designed from a fundam- tally different perspective than broadcast service networks, such as radio and television. While the focus of the latter is on reliability and user comfort, the emphasis of personal communication devices is on throughput and mobility. However, because the wireless channel is a shared transmission medium with only very limited resources, a trade-off has to be made between mobility and the number of simultaneous users in a con?ned geographical area. Accord- 1 ing to Shannon’s theorem on channel capacity, the overall data throughput of a communication channel bene?ts from either a linear increase of the tra- mission bandwidth, or an (equivalent) exponential increase in signal quality. Consequently, it is more bene?cial to think in terms of channel bandwidth than it is to pursue a high transmission power. All the above elements are embodied in the concept of spatial ef?ciency. By describing the throughput of a system 2 in terms of bits/s/Hz/m , spatial ef?ciency takes into account that the use of a low transmission power reduces the operational range of a radio transmission, and as such enables a higher reuse rate of the same frequency spectrum.

Download or read book Transceiver Design for Ultra wideband Communication Systems written by Jin Tang and published by . This book was released on 2006 with total page 372 pages. Available in PDF, EPUB and Kindle. Book excerpt: