Download or read book Optimal Strategies in Jamming Resistant Uncoordinated Frequency Hopping Systems written by Bingwen Zhang and published by . This book was released on 2013 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract: Uncoordinated frequency hopping (UFH) has recently emerged as an effective mechanism to defend against jamming attacks. Existing research focuses on the optimal design of the hopping pattern, which implicitly assumes that the strategy of the attacker is fixed. In practice, the attacker might adjust its strategy to maximize its damage on the communication system. In this thesis, we study the design of optimal hopping pattern (the defense strategy) as long as the optimal jamming pattern (the attack strategy). In particular, we model the dynamic between the legitimate users and the attacker as a zero sum game, and study the property of this game. We show that when the legitimate users and the jammer can access only one channel at any time, the game has a unique Nash equilibrium. In the Nash equilibrium, the legitimate users and Eve will access or jam only a subset of channels that have good channel quality. Furthermore, the better the channel, the larger the probability that Eve will jam the channel and the smaller the probability the legitimate users will access this channel. We further extend the study to multiple access multiple jamming case and characterize the Nash equilibrium. We also give numerical results to illustrate the analytical results derived in this thesis.

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.

Download or read book Modern Communications Jamming Principles and Techniques written by Richard Poisel and published by Artech House. This book was released on 2011 with total page 895 pages. Available in PDF, EPUB and Kindle. Book excerpt: This edition features a wealth of new material on urban warfare, including a computer simulation of EW architecture alternatives for land-based forces based on urban constraints. It also includes an expanded section on time-hopped spread spectrum communications, more details on modern communication system technologies such as CDMA and OFDM, and an in-depth discussion on sources of urban noise. This practical resource is focused on showing the reader how to design and build jammers specifically targeted at spread spectrum, anti-jam communications. Moreover, it gives assistance in evaluating the expected performance of jamming systems against modern communications systems, and discover the best waveform to use to counter communication systems designed to be effective in jamming environments. While mathematical derivations in general are avoided, the book presents error rate performance equations for most modern digital anti-jam communication systems

Download or read book Performance of Frequency Hopping Systems with Diversity Under Partial Band Jamming written by Kashfieh Taghizadeh and published by . This book was released on 1985 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Performance Evaluation of Different Jamming Strategies Over Uncoded Noncoherent Fast Frequency Hopping MFSK Communication Systems written by Konstantinos Karkatzounis and published by . This book was released on 2004-09-01 with total page 115 pages. Available in PDF, EPUB and Kindle. Book excerpt: The fast frequency hopping technique is considered one of the most effective Electronic Protective Measures (EPM) for military communications systems in order to mitigate the effect of a follower or repeat jammer. This thesis evaluates the performance of different jamming strategies as barrage noise jamming, partial band jamming and multitone band jamming against an uncoded noncoherent FFH/MFSK system with a conventional receiver. The theoretical and simulated results showed that the best jamming strategies for the examined modulation orders M=2,4,8 is the optimum case of multitone band jamming. As a second goal, this thesis also provides a preliminary analysis for an uncoded noncoherent FFH/MFSK system in a Rayleigh fading channel. This analysis includes the theoretical and simulated results for the influence in the performance from a barrage noise jammer along with AWGN. The results of the theoretical analysis and the simulation modeling for both cases can be used as guidelines to analyze more complicated jamming or combinations of jamming strategies against FFH/MFSK communication system.

Download or read book Jamming Performance of Frequency Hopped Communication Systems with Nonuniform Hopping Distributions written by Patrick R. Hirschler-Marchand and published by . This book was released on 1990 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents an analysis of the jamming performance of frequency-hopped communication systems in which the user-signal hops according to a nonuniform distribution across the available hopping bandwidth. Keywords: Jamming performance, Nonuniform frequency hopping, Continuous and discrete, Frequency hopping, Satellite communication system, Frequency distributions, Countermeasures. (jg).

Download or read book Frequency Hopping in a Jamming Environment written by Don J. Torrieri and published by . This book was released on 1978 with total page 52 pages. Available in PDF, EPUB and Kindle. Book excerpt: The response of frequency-hopping systems to various types of jamming is examined. Fast and slow hopping are defined in terms of the information bit rate. The impact of coding on the jamming susceptibilities of fast and slow hopping systems is analyzed. The required conditions for effective repeater jamming and effective partial-band jamming are explored. Frequency hopping is compared with pseudonoise spread spectrum. The use of different types of data modulation with frequency hopping is discussed.

Download or read book Frequency Hopping Does Not Increase Anti jamming Resilience of Wireless Channels written by Moritz Wiese and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Anti jamming System with Double Keys for Slow Frequency Hopping written by Suzanne Hjelm and published by . This book was released on 1995 with total page 155 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Antijamming Schemes in Slow Frequency Hopping Systems written by Rama Rao Nerella and published by . This book was released on 1985 with total page 156 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Optimum Jamming Effects on Frequency Hopping M ary FSK Frequency Shift Keying Systems Under Certain ECCM Electronic Counter Countermeasures Receiver Design Strategies written by J. S. Lee and published by . This book was released on 1984 with total page 604 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of M-ary frequency-shift-keying frequency-hopping systems using multiple hops per symbol waveform is derived and evaluated for the cases of worst-case partial-band noise jamming and worst-case partial-band tone jamming. The analyses include the effects of the jamming under certain ECCM receiver design strategies. The receiver design strategies include the convention square-law linear combiner and the several types of unconventional nonlinear combiners. The ECCM receiver design employing the nonlinear combiners are found to provide diversity gains whereas such gains are not realized under the conventional linear combining strategy. (Author).

Download or read book Predicting Jamming Systems Frequency Hopping Sequences Using Artificial Neural Networks written by Charles Strickland and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Author's abstract: This work proposes a neural network architecture that was designed to predict and reverse engineer frequency hopping jamming systems. The neural network was initially optimized for use with a 12th order linear shift feedback register maximum length sequence utilizing a minimal polynomial as the characteristic polynomial. This neural network was then scaled to accommodate 7 different sequences, of orders 6 through 12. The neural network was trained for these sequences using training data that is 10 times the length of the sequence. This information is then used to generate a hopping sequence that reduces the jamming interference to 0 with as few as 4 jammer hopping samples. The model is also capable of determining if the jammer is utilizing a sequence that the model is trained for in as few as 25 jammer hopping samples.

Download or read book Frequency Hopping Multiple Frequency Shift Keying Coding and Optimal Partial Band Jamming written by Don J. Torrieri and published by . This book was released on 1982 with total page 53 pages. Available in PDF, EPUB and Kindle. Book excerpt: The performance of frequency-hopping systems with multiple frequency-shift keying is determined for operation against optimal partial-band jamming. The effects of Reed-Solomon, binary block, convolutional, and concatenated codes are analyzed. Continuous-phase frequency-shift keying with limiter-discriminato demodulation is shown to offer potentially improved performance in frequency-hopping systems. (Author).

Download or read book Frequency Hopping Communication Systems written by Don Torrieri and published by . This book was released on 2003-03 with total page 183 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report presents a current review and analysis of the most important aspects of frequency-hopping communication systems. Frequency synthesis and other implementation issues are discussed. The effects and suitability of various modulations is examined. The impact of error-correcting codes on the performance of frequency-hopping systems is analyzed.

Download or read book Modeling and Evaluating Denial of Service Attacks for Wireless and Mobile Applications written by Zhou Lu and published by Springer. This book was released on 2015-11-05 with total page 128 pages. Available in PDF, EPUB and Kindle. Book excerpt: This SpringerBrief covers modeling and analysis of Denial-of-Service attacks in emerging wireless and mobile applications. It uses an application-specific methodology to model and evaluate denial-of-service attacks. Three emerging applications are explored: multi-modal CSMA/CA networks, time-critical networks for the smart grid, and smart phone applications. The authors define a new performance metric to quantify the benefits of backoff misbehavior and show the impacts of a wide range of backoff mishandling nodes on the network performance, and propose a scheme to minimize the delay of time-critical message delivery under jamming attacks in smart grid applications. An investigation on the resilience of mobile services against malware attacks is included to advance understanding of network vulnerabilities associated with emerging wireless networks and offers instrumental guidance into the security design for future wireless and mobile applications. This book is appropriate for students, faculty, engineers, and experts in the technical area of wireless communication, mobile networks and cyber security.

Download or read book Data Driven Intelligence in Wireless Networks written by Muhammad Khalil Afzal and published by CRC Press. This book was released on 2023-03-27 with total page 405 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book highlights the importance of data-driven techniques to solve wireless communication problems. It presents a number of problems (e.g., related to performance, security, and social networking), and provides solutions using various data-driven techniques, including machine learning, deep learning, federated learning, and artificial intelligence. This book details wireless communication problems that can be solved by data-driven solutions. It presents a generalized approach toward solving problems using specific data-driven techniques. The book also develops a taxonomy of problems according to the type of solution presented and includes several case studies that examine data-driven solutions for issues such as quality of service (QoS) in heterogeneous wireless networks, 5G/6G networks, and security in wireless networks. The target audience of this book includes professionals, researchers, professors, and students working in the field of networking, communications, machine learning, and related fields.

Download or read book Multi point Cooperative Communication Systems Theory and Applications written by Ming Ding and published by Springer Science & Business Media. This book was released on 2013-03-15 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Multi-point Cooperative Communication Systems: Theory and Applications mainly discusses multi-point cooperative communication technologies which are used to overcome the long-standing problem of limited transmission rate caused by the inter-point interference. Instead of combating the interference, recent progress in both academia and industrial standardizations has evolved to adopt the philosophy of “exploiting” the interference to improve the transmission rate by cooperating among multiple points. This book addresses the multi-point cooperative communication system systematically giving the readers a clear picture of the technology map and where the discussed schemes may fit. This book includes not only the theories of the paradigm-shifting multi-point cooperative communication, but also the designs of sub-optimal cooperative communication schemes for practical systems. Ming Ding is a senior researcher at Sharp Laboratories of China; Hanwen Luo is a professor at Shanghai Jiao Tong University.