Interference Mitigation Techniques to Support Coexistence of Ultra-WideBand Systems
Author: Abdur Rahim
Publisher: Jörg Vogt Verlag
Published: 2010
Total Pages: 190
ISBN-13: 3938860324
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Interference Mitigation Techniques for Ultra-wideband Systems
Author: Joe Izu Jamp
Publisher:
Published: 2007
Total Pages: 149
ISBN-13: 9781109926842
DOWNLOAD EBOOKFor 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.
Ultra Wideband Wireless Communication
Author: Huseyin Arslan
Publisher: John Wiley & Sons
Published: 2006-10-06
Total Pages: 523
ISBN-13: 0470042389
DOWNLOAD EBOOKULTRA 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.
A Novel Ultra-wideband Pulse Generation Technique for Narrowband Interference Mitigation
Author: Ahmed R. Mohammed
Publisher:
Published: 2013
Total Pages: 520
ISBN-13:
DOWNLOAD EBOOKUltra wideband (UWB) interference on narrowband systems is a serious problem, which impedes the use and development of the UWB short range wireless communication technology. The UWB pulsed signal can degrade or block signals of narrowband systems that may exist in its transmission zone. Limited solutions have so far been proposed by different researchers to mitigate the UWB interference on specific narrowband systems at the cost of UWB system performance and increased complexity. This thesis proposes a novel technique to generate UWB pulses based on an effective way of shaping a continuous sine wave rather than using one of the conventional pulses of Gaussian family. Two pulse generators for narrowband interference mitigation have been designed and implemented. A proposed technique of pulse position phase modulation (PPPM) has been validated with the proposed pulse generators as a method to double the throughput speed. It has also been demonstrated that the proposed pulse generators can support a variety of modulation and transmission techniques with different throughput speeds and interference mitigation levels.Both pulse generators comply with the Federal Communications Commission (FCC) spectrum emission indoor and outdoor masks. The first generates shaped monocycle sine wave (SM-S) pulses and the second generates shaped monocycle half wave rectified sine wave (SM-HRS) pulses. The SM-S and SM-HRS pulse generators have minimum throughputs of 550 Mbps and 500 Mbps respectively using on-off keying (OOK) modulation. The interference mitigation level with the SM-HRS pulse generator achieved -90 dBm/MHz over 0-5.5 GHz range, which is so far better than any existing mitigation level. The SM-S pulse generator on the other hand, achieved less than -70 dBm/MHz over 0-5 GHz range, which is also high by comparison with the highest values achieved by other existing solutions. Both generators avoid interference with most existing narrowband systems including GPS, PCS, WiMAX, WLAN 802.11b and 802.11a.
Capacity Enhancement and Interference Mitigation in Multiuser Uwb
Author: Dr. Himanshu B. Soni
Publisher: LAP Lambert Academic Publishing
Published: 2011-05
Total Pages: 132
ISBN-13: 9783844323863
DOWNLOAD EBOOKIn this book, we have considered multiuser communication scenario with Ultra Wideband (UWB) communication. Different issues under multiuser communication are considered with focus on capacity issue. In literature two widely discussed techniques for multiple access for UWB are based on Time Hopping (TH) and Orthogonal Frequency Division Multiplexing (OFDM). In our investigations we have considered both these techniques for UWB system and addressed different issues. TH based technique has been available for long in literature for UWB communication, while new standard for UWB is based on OFDM. We have considered downlink communication with UWB. Under this scenario we have considered the case wherein UWB device collects the data from different multimedia sources and transmits the combined data over link. We have proposed scheme based on DS-CDMA based OFDM. For this scheme we have proposed two system models named system model-I and system model-II. Model-I is considered without MUI and in Model-II we have considered the effect of MUI. we have evaluated the performance under AWGN channel, multipath Rayleigh channel and SV channel.
Signaling Design in Ultra-Wideband Wireless Communication Systems
Author: Chin-Sean Sum
Publisher: LAP Lambert Academic Publishing
Published: 2012-04
Total Pages: 116
ISBN-13: 9783848493067
DOWNLOAD EBOOKThis book summarizes the study on signaling design in ultra-wideband (UWB) system wireless communication systems. UWB signaling design can be effectively manipulated for the purposes of performance improvement and interference mitigation. Timing jitter, as a critical issue in UWB signaling design, is also investigated to assess its impact to system performance. Chapter 1 describes the research background, and the motivation that becomes the catalyst to the completion of this study. Chapter 2 provides an overall introduction to UWB systems, with specific emphasis on direct sequence (DS) and DS multiband (MB) approaches. Chapter 3 deals with signaling design in varying low chip duty factor (DF), a unique parameter in UWB system. Chapter 4 proposes two interference mitigation techniques developed by manipulating signaling design in DS and DS-MB UWB system. Chapter 5 highlights and mitigates the impact of timing jitter in UWB signaling design.
Rate-Splitting Methods for Interference Management in Cellular Wireless Systems
Author: Guangxia Zhou
Publisher: Logos Verlag Berlin GmbH
Published: 2018-11-01
Total Pages: 238
ISBN-13: 3832547843
DOWNLOAD EBOOKIn this thesis, rate-splitting based interference exploitation has been investigated in order to bridge theory and practice. The results shows that conventional detection-decoding techniques cannot provide desirable results within a reasonable complexity and thereby substantially reduce interference mitigation gains. A multi-layer rate splitting scheme is proposed to deal with this obstacle. This multi-layer rate splitting scheme can approach or achieve the same maximum sum rate as that achieved by joint decoding.
Transmitted-reference Methods in Ultra-wideband Communications
Author: Faranak Nekoogar
Publisher:
Published: 2005
Total Pages: 464
ISBN-13:
DOWNLOAD EBOOKUltra-wideband Positioning Systems
Author: Zafer Sahinoglu
Publisher: Cambridge University Press
Published: 2008-09-04
Total Pages: 271
ISBN-13: 1139472313
DOWNLOAD EBOOKPosition estimation of wireless devices has many applications in short-range networks. Ultra-wideband (UWB) signals provide accurate positioning capabilities that can be harnessed in wireless systems to realise these applications. This text provides detailed coverage of UWB positioning systems, offering comprehensive treatment of signal and receiver design for ranging, range estimation techniques, theoretical performance bounds, ranging algorithms and protocols. Beginning with a discussion of the potential applications of wireless positioning, and investigating UWB signals for such applications, later chapters establish a signal processing framework for analysing UWB positioning and ranging systems. The recent IEEE 802.15.4a standard related to UWB is also studied in detail. Each chapter contains examples, problems and Matlab scripts to help readers grasp key concepts. This is an ideal text for graduate students and researchers in electrical and computer engineering, and practitioners in the communications industry, particularly those in wireless communications. Further resources are available at www.cambridge.org/9780521873093.
Cognitive Radio Techniques
Author: Kandeepan Sithamparanathan
Publisher: Artech House
Published: 2012
Total Pages: 396
ISBN-13: 1608072037
DOWNLOAD EBOOKProviding an in-depth treatment of the core enablers of cognitive radio technology, this unique book places emphasis on critical areas that have not been sufficiently covered in existing literature. You find expert guidance in the key enablers with respect to communications and signal processing. The book presents fundamentals, basic solutions, detailed discussions of important enabler issues, and advanced algorithms to save you time with your projects in the field. For the first time in any book, you find an adequately detailed treatment of spectrum sensing that covers nearly every aspect of the subject. Moreover, this valuable resource provides you with thorough working knowledge of localization and interference mitigation as enablers of cognitive radio technology. The book includes all the necessary mathematics, statistical and probabilistic treatments, and performance analysis to give you a comprehensive understanding of the material.
