Download or read book Interference Mitigation Techniques to Support Coexistence of Ultra WideBand Systems written by Abdur Rahim and published by Jörg Vogt Verlag. This book was released on 2010 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Interference Mitigation Techniques for Ultra wideband Systems written by Joe Izu Jamp and published by . This book was released on 2007 with total page 149 pages. Available in PDF, EPUB and Kindle. Book excerpt: For UWB OFDM based systems, LABI is again applied to code the data in the vicinity of a notch created by nulling out subcarriers. In-band notches of -28dB can be created, and is an improvement of 20dB over an uncoded spectrum.

Download or read book Handbook of Ultra Wideband Short Range Sensing written by Jürgen Sachs and published by John Wiley & Sons. This book was released on 2013-01-15 with total page 802 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ranging from the theoretical basis of UWB sensors via implementation issues to applications, this much-needed book bridges the gap between designers and appliers working in civil engineering, biotechnology, medical engineering, robotic, mechanical engineering, safety and homeland security. From the contents: * History * Signal and systems in time and frequency domain * Propagation of electromagnetic waves (in frequency and time domain) * UWB-Principles * UWB-antennas and applicators * Data processing * Applications

Download or read book Ultra Wideband written by Mohammad Abdul Matin and published by BoD – Books on Demand. This book was released on 2012-10-03 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra wideband (UWB) has advanced and merged as a technology, and many more people are aware of the potential for this exciting technology. The current UWB field is changing rapidly with new techniques and ideas where several issues are involved in developing the systems. Among UWB system design, the UWB RF transceiver and UWB antenna are the key components. Recently, a considerable amount of researches has been devoted to the development of the UWB RF transceiver and antenna for its enabling high data transmission rates and low power consumption. Our book attempts to present current and emerging trends in-research and development of UWB systems as well as future expectations.

Download or read book Funeral Card written by and published by . This book was released on with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Body Sensor Networks written by Guang-Zhong Yang and published by Springer Science & Business Media. This book was released on 2007-12-05 with total page 507 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book addresses the issues of the rapidly changing field of wireless wearable and implantable sensors. It also discusses the latest technological developments and clinical applications of body-sensor networks (BSN). BSN is a new area of research and the last decade has seen a rapid surge of interest. The book also provides a review of current wireless sensor development platforms and a guide to developing your own BSN applications.

Download or read book Novel Applications of the UWB Technologies written by Boris Lembrikov and published by BoD – Books on Demand. This book was released on 2011-08-01 with total page 458 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra wideband (UWB) communication systems are characterized by high data rates, low cost, multipath immunity, and low power transmission. In 2002, the Federal Communication Commission (FCC) legalized low power UWB emission between 3.1 GHz and 10.6 GHz for indoor communication devices stimulating rapid development of UWB technologies and applications. The proposed book Novel Applications of the UWB Technologies consists of 5 parts and 20 chapters concerning the general problems of UWB communication systems, and novel UWB applications in personal area networks (PANs), medicine, radars and localization systems. The book will be interesting for engineers and researchers occupied in the field of UWB technology.

Download or read book On the Coexistence of Ultra Wideband UWB Wireless Communication Systems with Narrowband Interference written by Amir Hosain Jodar and published by . This book was released on 2005 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra wideband (UWB) communication is based on the transmission of short pulses on the order of nanoseconds. As a result, UWB systems operate over dedicated spectrum bands already occupied by other narrowband systems. Because a UWB device spreads its energy over a large frequency range, it radiates a small percentage of its total power in the operating spectrum of narrowband receivers. Consequently, UWB signals appear as low-power noise and have little impact on underlying operating devices. However, the interference coming from narrowband systems operating in the spectrum allotted for UWB use could be problematic. This thesis contains two main investigations. In the first investigation, we analyze the coexistence of time-hopping pulse amplitude modulation UWB systems in the presence of narrowband interference exploiting additive white Gaussian noise and flat-fading channels. The second investigation deals with the coexistence of UWB systems with narrowband interference based on experimentation.

Download or read book Smart Radio Interference Mitigation Techniques for Mutual Coexistence written by Siddharth Shetty and published by LAP Lambert Academic Publishing. This book was released on 2011-09 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt: This Thesis focuses on an interference mitigation technique called Detect And Avoid (DAA), a terminology that was made popular by Ultrawideband technology. This report specifically addresses design and implementation challenges associated with DAA in the context of coexistence between UWB and WiMAX technologies. However the design problems, implementation issues and candidate solutions discussed herein are generic enough to be applicable to other radio architectures that use similar core building blocks, particularly for digital radio implementations that contain Fast Fourier Transform (FFT) engines. Another important aspect highlighted in this report is the impact of non-technical considerations such as regulatory requirements and cost implications on choice of certain approaches over others. Such considerations can be decisive from a hardware design perspective especially in low-cost, low-power consumer electronics market.

Download or read book Conference Proceedings written by and published by . This book was released on 2003 with total page 426 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book OFDM for Wireless Communications Systems written by Ramjee Prasad and published by Artech House. This book was released on 2004 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt: Annotation Written by a leading authority, this timely new work offers today's wireless professionals a complete understanding of OFDM technology and applications in wireless communications systems, placing emphasis on wireless LANs (local area networks) and PANs (personal area networks).

Download or read book Ultra Wideband Wireless Communication written by Huseyin Arslan and published by John Wiley & Sons. This book was released on 2006-10-13 with total page 533 pages. Available in PDF, EPUB and Kindle. Book excerpt: ULTRA WIDEBAND WIRELESS COMMUNICATION AN INTERNATIONAL PANEL OF EXPERTS PROVIDE MAJOR RESEARCH ISSUES AND A SELF-CONTAINED, RAPID INTRODUCTION TO THE THEORY AND APPLICATION OF UWB This book delivers end-to-end coverage of recent advances in both the theory and practical design of ultra wideband (UWB) communication networks. Contributions offer a worldwide perspective on new and emerging applications, including WPAN, sensor and ad hoc networks, wireless telemetry, and telemedicine. The book explores issues related to the physical layer, medium access layer, and networking layer. Following an introductory chapter, the book explores three core areas: Analysis of physical layer and technology issues System design elements, including channel modeling, coexistence, and interference mitigation and control Review of MAC and network layer issues, up to the application Case studies present examples such as network and transceiver design, assisting the reader in understanding the application of theory to real-world tasks. Ultra Wideband Wireless Communication enables technical professionals, graduate students, engineers, scientists, and academic and professional researchers in mobile and wireless communications to become conversant with the latest theory and applications by offering a survey of all important topics in the field. It also serves as an advanced mathematical treatise; however, the book is organized to allow non-technical readers to bypass the mathematical treatments and still gain an excellent understanding of both theory and practice.

Download or read book Technology Trends in Wireless Communications written by Ramjee Prasad and published by Artech House. This book was released on 2003 with total page 329 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is an authoritative description of the range of future mobile communications technologies.

Download or read book Performance Analysis and Effect of Multi user Interference for Ultra Wideband Communications written by Mukta Athavale and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra-Wideband (UWB) is an upcoming technology for short-range high data rate applications like Wireless Personal Area Networks or medium/long-range low data rate applications like sensor networks. UWB has many captivating characteristics such as very short duration pulses (order of nanoseconds), multipath channel, large instantaneous bandwidth and time hopping pulse trains resulting in coexistence with the existing narrow band users. The Ultra Wideband communication systems employ the technique of Impulse radio of transmitting short duration pulses which result in extremely wide bandwidth and many performance benefits. Since UWB systems operate in dense multipath environments, RAKE receiver is the optimum choice for the receiver. Considering the evolving nature and the wide applications of this technology, it is important to analyze the system performance for different scenarios including the multi-user environment. My thesis mainly targets the analysis of the bit error rate (BER) performance of the time hopping pulse position modulation (TH-PPM) UWB system with the use of Ideal Rake Receiver and the performance degradation when the Selective and Partial Rake receivers are employed. I have also analyzed the effect of changing the repletion code length on the performance. The performance analysis is carried out for varying the modulation index M by employing 4-PPM instead of Binary PPM and simulation results show that 4-PPM offers a worse performance to the binary PPM case. Furthermore, I have evaluated the performance in the presence of Multiuser Interference using the Standard Gaussian Approximation. Finally, the performance of employing M-ary PPM in the multi-user scenario is also evaluated. The simulations are performed under the assumption of perfect channel knowledge. The IEEE UWB indoor channel model is used for Non Line of Sight (NLOS) Case C which is for 4 to 10 m distance between the transmitter and the receiver.

Download or read book Ultra Wideband Systems written by Roberto Aiello Ph.D. and published by Elsevier. This book was released on 2006-06-12 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ultra wideband technology turns the radio spectrum available to wireless applications from a country road into a high-speed ten lane super freeway, and the destination is the future of wireless technology. UWB is a huge leap forward because it offers wide bandwidth with little interference, allowing multiple UWB signals to share a single channel. This multi-author volume, compiled under the guidance of Dr. Roberto Aiello, introduces the theory and concepts behind ultra wideband (UWB) systems as well as their applications. Authors include those involved in creating the UWB standards, researchers, and applications specialists. This book has been broken down into three parts: introduction to UWB, different techniques available, and applications. Within these sections topics covered are UWB spectrum and regulations, UWB channels, modulation techniques, antennas, signal propagation, and UWB transceiver architectures. This book has all the information RF/wireless engineers will need to understand this burgeoning technology. *An all-star list of contributors covers the subject more authoritatively than any single author could *Discusses U.S. and international ultra wideband regulations *Includes material on antenna systems and signal propagation at ultra wideband frequencies

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 Interference Rejection and Management written by and published by . This book was released on 2009 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: We consider interference suppression in several wireless communication systems. The first topic treated is self-interference encountered among cooperating systems, for example, the self-interference that is encountered in cognitive radio systems and ultra-wideband (UWB) communication systems. Both single-carrier, direct sequence signals and multicarrier signals are considered, and the effects of the interference on the performance of a direct sequence UWB system that employs channel state estimation in the presence of the interference is evaluated. The second topic that is treated is the mitigation of narrowband interference in block-modulated multicarrier systems. Two schemes, multicarrier code-division multiple access (MC-CDMA) and orthogonal frequency division multiplexing (OFDM), are investigated. The inherent frequency diversity of MC-CDMA through the use of spreading codes allows for robustness against interference. Conversely, OFDM must employ a signal processing technique to suppress the interference due to its lack of frequency diversity. The performance of OFDM is improved with the addition of forward error correction (FEC) coding in the frequency domain, thereby providing the system with frequency diversity. The third topic is the suppression of interference in multiple input, multiple output (MIMO) wireless communication systems that employ multiple-transmit and multiple-receive antennas to increase the data rate and achieve signal diversity in fading multipath channels. Interference in MIMO wireless communication systems usually consists of intersymbol interference (ISI) due to channel multipath dispersion and cross-talk, or interchannel interference, due to the simultaneous transmissions from the multiple-transmit antennas. The focus of the section is on point-to-multipoint (broadcast) MIMO systems in which the channel characteristics are assumed to be known at the transmitter, so that interference mitigation can be performed at the transmitter.