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Robust Wireless Communications Under Co Channel Interference And Jamming
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Book Synopsis Robust Wireless Communications Under Co-channel Interference and Jamming by : Galib Asadullah M. M.
Download or read book Robust Wireless Communications Under Co-channel Interference and Jamming written by Galib Asadullah M. M. and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Interference and jamming severely disrupt our ability to communicate by decreasing the effective signal-to-noise ratio and by making parameter estimation difficult at the receiver. The objective of this research work is to design robust wireless systems and algorithms to suppress the adverse effects of non-intentional co-channel interference (CCI) or intentional jamming. In particular, we develop chip-combining schemes with timing, channel, and noise-power estimation techniques, all of which mitigate CCI or jamming. We also exploit the spatial diversity and iterative receiver techniques for this purpose. Most of the existing timing estimation algorithms are robust against either large frequency offsets or CCI, but not against both at the same time. Hence, we develop a new frame boundary estimation method that is robust in the presence of severe co-channel interference and large carrier-frequency offsets. To solve the high peak-to-average-power ratio problem of a multicarrier code division multiple access (MC-CDMA) system and enhance its robustness against fading and jamming, we propose a constant-envelope MC-CDMA system employing cyclic delay diversity (CDD) as transmit diversity. We analyze the diversity order, coding gain, and bit-error rate upper bound. We also propose a blind, accurate, and computationally efficient signal-to-noise ratio estimator for the proposed system. We propose a configurable robust anti-jam receiver that estimates the frequency- or time-domain jammer state information (JSI) and uses it for chip combining in the corresponding domain. A soft-JSI-based chip-combining technique is proposed that outperforms conventional hard-JSI-based chip combining. We also derive a chip combiner that provides sufficient statistics to the decoder. Channel estimation is necessary for coherent signal detection and JSI estimation. Conversely, knowledge of the jamming signal power and JSI of different subcarriers can improve the accuracy of the channel estimates. Hence, we propose joint iterative estimation of the multiple-input multiple-output (MIMO) channel coefficients, jamming power, and JSI for a coded MC-CDMA MIMO system operating under jamming and a time-varying frequency-selective fading channel. Finally, we reduce the computational complexity of the JSI-based anti-jam receivers by introducing an expectation-maximization-based joint channel and noise-covariance estimator that does not need either the subcarrier JSI or the individual powers of the AWGN and jamming signal.
Book Synopsis Wireless Communications under Hostile Jamming: Security and Efficiency by : Tongtong Li
Download or read book Wireless Communications under Hostile Jamming: Security and Efficiency written by Tongtong Li and published by Springer. This book was released on 2018-10-10 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: This monograph is intended for the designers and would-be designers of secure and efficient wireless communication systems under intentional interference. Along with the widespread of wireless devices, especially reconfigurable software defined radios, jamming has become a serious threat to civilian communications. In this book, going beyond traditional communication system design that mainly focuses on accurate information transmission under benign environments, we aim to enhance the physical layer security of communication systems by integrating modern cryptographic techniques into transceiver design, so as to achieve secure high-speed transmission under hostile interference with high reliability and efficiency. We revisit existing jamming patterns, and introduce new jamming patterns. We analyze the weaknesses of existing anti-jamming techniques. We present innovative and feasible anti-jamming techniques, which can strengthen the inherent security of the 3G, 4G and the upcoming 5G systems with minimal and inexpensive changes to the existing CDMA, frequency hopping and OFDM schemes. We also provide benchmarks for system performance evaluation under various jamming scenarios through capacity analysis. This book includes design principles, in-depth theoretical analysis and practical design examples, and will be of interest to academic researchers as well as professionals in industry.
Book Synopsis Robust Cognitive Algorithms For Fast-Varying Spectrum-Agile Wireless Networks by : Mohammad Jamal Abdel-Rahman
Download or read book Robust Cognitive Algorithms For Fast-Varying Spectrum-Agile Wireless Networks written by Mohammad Jamal Abdel-Rahman and published by . This book was released on 2014 with total page 210 pages. Available in PDF, EPUB and Kindle. Book excerpt: Wireless communications have experienced tremendous growth in the last decade, which has placed significant demand for RF spectrum, leading to spectrum "crunch." Driven by numerous studies that revealed the significant under-utilization of many licensed channels in the VHF and UHF bands, a new paradigm for spectrum sharing has emerged in the past decade. In this paradigm, wireless devices (a.k.a. secondary users) are allowed to operate opportunistically in certain licensed bands without interfering with the licensed users (a.k.a. primary users). The realization of this new communication paradigm necessitates the design of a new generation of smart, adaptable, and programmable radios, called cognitive radios. Enabling opportunistic operation requires addressing various challenges including device coordination, resource allocation, channel monitoring, and various security issues. Specifically, secondary users are particularly vulnerable to node compromise and malicious jamming attacks. In this dissertation, we first develop several rendezvous algorithms for establishing unicast as well as multicast communication links in opportunistic spectrum access networks. The developed rendezvous algorithms are shown to be robust to node compromise attacks. Second, we study the anti-jamming rendezvous problem in the presence of an insider attack. We develop a combinatorial game-theoretic framework to capture the interactions between the rendezvousing nodes and the insider jammer. Third, to account for the dynamism of primary users, we propose novel stochastic resource allocation schemes under channel-quality uncertainty. The proposed schemes support channel bonding and aggregation and account for adjacent channel interference by introducing guard-bands. Fourth, to prevent interference with primary users, we design an optimal spectrum-sensing algorithm that achieves high detection accuracy and low false-alarm rate. Finally, we present an application of using cognitive radios for jamming mitigation in satellite communications. Extensive simulations are conducted to demonstrate the effectiveness and robustness of the proposed algorithms.
Book Synopsis Robust Coexistence Methods for Frequency Hopped Wireless Networks by : Jingli Li
Download or read book Robust Coexistence Methods for Frequency Hopped Wireless Networks written by Jingli Li and published by LAP Lambert Academic Publishing. This book was released on 2009-09 with total page 140 pages. Available in PDF, EPUB and Kindle. Book excerpt: With the upcoming pervasive deployment of wireless networks and devices on the unlicensed band, co- channel interference caused by frequency collisions among coexisting networks have become one of the major performance limiting challenges. In recent years, the coexistence issue has gained increasing attention. However, many collision avoidance schemes are not applicable to multiple frequency hopped networks, mainly due to the fact that the frequency channels of frequency hopped signals are constantly changing and the hop sequence of one network to another is unknown. In this book, a comprehensive framework for co-channel interference mitigation and robust coexistence of multiple frequency hopped networks is developed, multiple novel techniques are introduced, and the system modeling, design, theoretic analysis, simulation, and testbed implementation are presented. This book is useful to professionals and researchers in the wireless communications field. It is also beneficial for engineers seeking new technologies to improve their wireless products' performance and to lead the market.
Book Synopsis Fundamentals of Wireless Communication by : David Tse
Download or read book Fundamentals of Wireless Communication written by David Tse and published by Cambridge University Press. This book was released on 2005-05-26 with total page 598 pages. Available in PDF, EPUB and Kindle. Book excerpt: This textbook takes a unified view of the fundamentals of wireless communication and explains cutting-edge concepts in a simple and intuitive way. An abundant supply of exercises make it ideal for graduate courses in electrical and computer engineering and it will also be of great interest to practising engineers.
Book Synopsis Fading and Interference Mitigation in Wireless Communications by : Stefan Panic
Download or read book Fading and Interference Mitigation in Wireless Communications written by Stefan Panic and published by CRC Press. This book was released on 2013-12-11 with total page 263 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fading and Interference Mitigation in Wireless Communications will help readers stay up to date with recent developments in the performance analysis of space diversity reception over fading channels in the presence of cochannel interference. It presents a unified method for computing the performance of digital communication systems characterized by a variety of modulation and detection types and channel models. The book includes coverage of multichannel reception in various fading environments, influence of cochannel interference, and macrodiversity reception when channels are simultaneously affected by various types of fading and shadowing.
Book Synopsis On Optimum System Design for Wireless Communications by : Bo Wu
Download or read book On Optimum System Design for Wireless Communications written by Bo Wu and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: This dissertation addresses the issue of optimum system design to achieve reliable communication in the presence of various types of interference. Multiobjective formulation is used with noncooperative and cooperative approaches owing to the nature of the problems under consideration. Since intentional Jamming is one of the most severe kinds of interference, anti-jam techniques are crucial for communications in a hostile environment. The jam and anti-jam problem is modeled as a two-person zero-sum game in which the communicator and the jammer have antagonistic objectives and are viewed as the two players. The concept of Nash equilibrium is introduced and its characterizations such as existence, uniqueness, stability, robustness, and sensitivity are investigated. This model is then applied to a frequency-hop spread spectrum M-ary frequency-shift-keying system where ratio-threshold diversity is used to combat partial-band noise and multitone jamming. Equilibrium performance in terms of cutoff rate and bit error rate is shown to be superior to that predicted by worst-case analysis. When mutual interference caused by simultaneous transmissions is the major concern in a heterogeneous packet network, a multiobjective framework is proposed in this dissertation with the objectives and constraints of the individual users taken into consideration. Near-far effect and Rayleigh fading may occasion packet capture and therefore create unfairness in favor of closer users. Thus, multiobjective optimality is introduced, in which criterion of fairness is embedded. Optimum strategies controlling transmission probability and/or power are examined to yield the Pareto optimal solution in a slotted ALOHA network. Then, the same control strategies are studied with the channel utilization being the maximization objective. Optimization results are obtained in various situations, and effectiveness of different strategies is compared. A multimedia direct-sequence spread spectrum system may support multiple services with different transmission rates and diverse quality-of-service requirements. To facilitate multimedia applications and maximize the system capacity, average power control, error correction coding, and time diversity are incorporated into the system. The capacity of such a system is evaluated in multipath Rayleigh fading channels. Average bit error rate, outage probability, and corresponding information theoretic bounds are discussed. Concatenation of Reed-Solomon codes and convolutional codes is considered for error correction to account for different quality and delay constraints. It is shown through a numerical example that the system capacity can be increased significantly by an appropriate system design.
Author :JBV Subramanyam, Kokula Krishna Hari K Publisher :Association of Scientists, Developers and Faculties ISBN 13 :8192523330 Total Pages :481 pages Book Rating :4.1/5 (925 download)
Book Synopsis The Proceedings of the International Conference on Information Engineering, Management and Security 2014 by : JBV Subramanyam, Kokula Krishna Hari K
Download or read book The Proceedings of the International Conference on Information Engineering, Management and Security 2014 written by JBV Subramanyam, Kokula Krishna Hari K and published by Association of Scientists, Developers and Faculties. This book was released on 2014-05-15 with total page 481 pages. Available in PDF, EPUB and Kindle. Book excerpt: The Proceedings of the International Conference on Information Engineering, Management and Security 2014 which happened at Christu Jyoti Institute of Technology.
Book Synopsis Academic Press Library in Mobile and Wireless Communications by : Katie Wilson
Download or read book Academic Press Library in Mobile and Wireless Communications written by Katie Wilson and published by Academic Press. This book was released on 2016-08-04 with total page 752 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book, edited and authored by world leading experts, gives a review of the principles, methods and techniques of important and emerging research topics and technologies in wireless communications and transmission techniques. The reader will: - Quickly grasp a new area of research - Understand the underlying principles of a topic and its application - Ascertain how a topic relates to other areas and learn of the research issues yet to be resolved - Reviews important and emerging topics of research in wireless technology in a quick tutorial format - Presents core principles in wireless transmission theory - Provides reference content on core principles, technologies, algorithms, and applications - Includes comprehensive references to journal articles and other literature on which to build further, more specific and detailed knowledge
Book Synopsis Robust Techniques for Wireless Communications in Non-Gaussian Environments by : Juan G. Gonzalez
Download or read book Robust Techniques for Wireless Communications in Non-Gaussian Environments written by Juan G. Gonzalez and published by . This book was released on 1997 with total page 338 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Anti-Jamming Transmissions in Cognitive Radio Networks by : Liang Xiao
Download or read book Anti-Jamming Transmissions in Cognitive Radio Networks written by Liang Xiao and published by Springer. This book was released on 2015-11-07 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief examines anti-jamming transmissions in cognitive radio networks (CRNs), including several recent related research topics within this field. The author introduces the transmissions based on uncoordinated spread spectrum to address smart jammers in CRNs. The author applies game theory to investigate the interactions between secondary users and jammers while providing game theoretic solutions to suppress jamming incentives in CRNs. Later chapters evaluate the Nash equilibrium and Stackelberg equilibrium of the jamming games under various network scenarios. Professionals and researchers working in networks, wireless communications and information technology will find Anti-Jamming Transmissions in Cognitive Radio Networks valuable material as a reference. Advanced-level students studying electrical engineering and computer science will also find this brief a useful tool.
Book Synopsis Telegeoinformatics by : Hassan A. Karimi
Download or read book Telegeoinformatics written by Hassan A. Karimi and published by CRC Press. This book was released on 2004-03-15 with total page 336 pages. Available in PDF, EPUB and Kindle. Book excerpt: Telegeoinformatics is a new discipline resulting from the integration of mobile computing with wired and wireless communications, geoinformatics (including GIS and GPS), and remote sensing techniques and technologies. Users of telegeoinformatics from every field will need a comprehensive reference to solve multiple types of problems involving locat
Book Synopsis Interference Management in Wireless Networks by : Venugopal V. Veeravalli
Download or read book Interference Management in Wireless Networks written by Venugopal V. Veeravalli and published by Cambridge University Press. This book was released on 2018-02-22 with total page 228 pages. Available in PDF, EPUB and Kindle. Book excerpt: Learn about an information-theoretic approach to managing interference in future generation wireless networks. Focusing on cooperative schemes motivated by Coordinated Multi-Point (CoMP) technology, the book develops a robust theoretical framework for interference management that uses recent advancements in backhaul design, and practical pre-coding schemes based on local cooperation, to deliver the increased speed and reliability promised by interference alignment. Gain insight into how simple, zero-forcing pre-coding schemes are optimal in locally connected interference networks, and discover how significant rate gains can be obtained by making cell association decisions and allocating backhaul resources based on centralized (cloud) processing and knowledge of network topology. Providing a link between information-theoretic analyses and interference management schemes that are easy to implement, this is an invaluable resource for researchers, graduate students and practicing engineers in wireless communications.
Book Synopsis Co-channel Interference Mitigation for Robust Coexistence of Frequency Hopped Networks by :
Download or read book Co-channel Interference Mitigation for Robust Coexistence of Frequency Hopped Networks written by and published by . This book was released on 2006 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: To meet the military's increased need for rapidly deployable communication solutions, wireless networks are becoming increasingly common within tactical environments. Frequency hopping (FH) is widely used for radio transmission in such networks due to its low probability of detection/interception. With the increasing deployment, multiple networks occupying overlapping frequency bands are likely to coexist in a physical environment, especially in tactical operations, emergency situations, or dense-populated areas. Consequently co-channel interference due to frequency collisions can become a major performance limiting factor. In this project, we developed a novel interference mitigation technique based on multidimensional frequency estimation coupled with the expectation-maximization principle, which effectively resolves collisions among non-collaborative networks, thus enabling robust coexistence of multiple FH networks. To deal with possible receiver-transmitter mismatch, we also designed a low-complexity model order variation detection method. Novel multidimensional frequency estimation algorithms are also investigated.
Book Synopsis Design and Implementation of Visible Light Communication Circuit for Wireless Data Transmission and Radio Frequency Argumentation by : Dr. Anusiuba Overcomer Ifeanyi Alex
Download or read book Design and Implementation of Visible Light Communication Circuit for Wireless Data Transmission and Radio Frequency Argumentation written by Dr. Anusiuba Overcomer Ifeanyi Alex and published by Shineeks Publishers. This book was released on 2022-12-23 with total page 122 pages. Available in PDF, EPUB and Kindle. Book excerpt: The societal reliance upon wireless systems continues to rise due to mobile data interchange. A closer look at the current allocation of 38 GHz 5G Cellular is desperately pointing to, and suggesting the crowding of the frequency spectrum. Therefore this study explores visible light communication as one of the emerging technologies to help meet up with these challenges. The Visible Light Communication (VLC) refers to the communication technology which utilizes the visible light source as a signal transmitter, the air as a transmission medium, and the appropriate photodiode as a signal receiving component. This study appraises the extant literature on Solid State Lighting (SSL), with emphasis on Light Emitting Diodes (LEDs). The study highlights the weaknesses of the existing system, the advantages and the significance of the new system using prototype methodology. The study focused on the design and implementation of Visible Light Communication (VLC) circuit for wireless data transmission by designing an analog circuit to integrate with a computer or mobile phone, and then sending some form of data using visible light LEDs from a transmitter, and decoding it with a receiver. The design adopted Beagle-Bone-Black (BBB) as development platform and the circuit was tested with Proteus 8 Professional and data sent reliably and accurately over a short distance at a fair speed which ensures that the initial goals for the functionality of this new system which includes being able to send audio, text or pictures over a distance of approximately 10 meter at a data rate of at least 10 Mbps was achieved. The study shows that visible light communication has the potential to provide high speed data communication with improved energy efficiency and communication security/privacy due to its unique characteristics and advantages. Also, Visible Light Communication can complement the RF-based mobile communication systems in designing high-capacity mobile data networks and can be incorporated in the next generation 5G network. The study therefore recommends error control mechanism and Dimming Support to be integrated in the subsequent studies.
Book Synopsis 5G and Beyond Wireless Communication Networks by : Haijian Sun
Download or read book 5G and Beyond Wireless Communication Networks written by Haijian Sun and published by John Wiley & Sons. This book was released on 2023-11-29 with total page 213 pages. Available in PDF, EPUB and Kindle. Book excerpt: 5G and Beyond Wireless Communication Networks A comprehensive and up-to-date survey of 5G technologies and applications In 5G and Beyond Wireless Communication Networks, a team of distinguished researchers deliver an expert treatment of the technical details of modern 5G wireless networks and the performance gains they make possible. The book examines the recent progress in research and development in the area, covering related topics on fundamental 5G requirements and its enabling technologies. The authors survey 5G service architecture and summarize enabling technologies, including highly dense small cell and heterogeneous networks, device-to-device communications underlaying cellular networks, fundamentals of non-orthogonal multiple access in 5G new radio and its applications. Readers will also find: A thorough introduction to 5G wireless networks, including discussions of anticipated growth in mobile data traffic Comprehensive explorations of dense small cell and heterogeneous networks Practical discussions of the most recent developments in 5G research and enabling technologies Recent advancement of non-orthogonal multiple access and its role in current and future wireless systems Perfect for graduate students, professors, industry professionals, and engineers with an interest in wireless communication, 5G and Beyond Wireless Communication Networks will also benefit undergraduate and graduate students and researchers seeking an up-to-date and accessible new resource about 5G networks.
Book Synopsis A Robust and Ultra Bandwidth Efficient Transceiver for Interference Environment by : Gary Lang Do
Download or read book A Robust and Ultra Bandwidth Efficient Transceiver for Interference Environment written by Gary Lang Do and published by . This book was released on 1998 with total page 538 pages. Available in PDF, EPUB and Kindle. Book excerpt:
