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This book focuses specifically on physical layer security, a burgeoning topic in security. It consists of contributions from the leading research groups in this emerging area, and for the first time important high-impact results are collected together.
This book presents physical-layer security as a promising paradigm for achieving the information-theoretic secrecy required for wireless networks. It explains how wireless networks are extremely vulnerable to eavesdropping attacks and discusses a range of security techniques including information-theoretic security, artificial noise aided security, security-oriented beamforming, and diversity assisted security approaches. It also provides an overview of the cooperative relaying methods for wireless networks such as orthogonal relaying, non-orthogonal relaying, and relay selection.Chapters explore the relay-selection designs for improving wireless secrecy against eavesdropping in time-varying fading environments and a joint relay and jammer selection for wireless physical-layer security, where a relay is used to assist the transmission from the source to destination and a friendly jammer is employed to transmit an artificial noise for confusing the eavesdropper. Additionally, the security-reliability tradeoff (SRT) is mathematically characterized for wireless communications and two main relay-selection schemes, the single-relay and multi-relay selection, are devised for the wireless SRT improvement. In the single-relay selection, only the single best relay is chosen for assisting the wireless transmission, while the multi-relay selection invokes multiple relays for simultaneously forwarding the source transmission to the destination.Physical-Layer Security for Cooperative Relay Networks is designed for researchers and professionals working with networking or wireless security. Advanced-level students interested in networks, wireless, or privacy will also find this book a useful resource.
This is the first self-contained text to consider security and non-cooperative behavior in wireless networks. Major networking trends are analyzed and their implications explained in terms of security and cooperation, and potential malicious and selfish misdeeds are described along with the existing and future security techniques. Fundamental questions of security including user and device identification; establishment of security association; secure and cooperative routing in multi-hop networks; fair bandwidth distribution; and privacy protection are approached from a theoretical perspective and supported by real-world examples including ad hoc, mesh, vehicular, sensor, and RFID networks. Important relationships between trust, security, and cooperation are also discussed. Contains homework problems and tutorials on cryptography and game theory. This text is suitable for advanced undergraduates and graduate students of electrical engineering and computer science, and researchers and practitioners in the wireless industry. Lecture slides and instructor-only solutions available online (www.cambridge.org/9780521873710).
Understand key information-theoretic principles that underpin the design of next-generation cellular systems with this invaluable resource. This book is the perfect tool for researchers and graduate students in the field of information theory and wireless communications, as well as for practitioners in the telecommunications industry.
Following a detailed overview of cooperative communications and the physical layer security, this book proposes relay and jammer selection schemes for security in one-way cooperative networks and to improve physical layer security in two-way cooperative networks. It also proposes a Cooperative Hybrid Self-Healing scheme to enhance the confidentiality of the data collected by UWSN. It ends with a proposal called Self-Healing Cluster Controlled Mobility (SH-CCM) scheme based on hybrid cooperation between both Proactive and Reactive peers and the sick sensors at both network and cluster levels to guarantee the security in UWSN.
Security arises as one of the most important features and a new quality of service (QoS) constraint that must be accounted for in the fifth-generation (5G) wireless network design. The inherent broadcast characteristic of wireless communication allows transmissions to be received by any user within the range, resulting in attackers' ability to initiate various passive attacks. The essential premise of information-theoretic security is to ensure the reliable and secure communications in the presence of adversarial users by adopting physical layer (PHY-layer) approaches, without relying on higher-layer encryption. This can be achieved primarily in two ways: by extracting secret keys over public channels via exploiting the randomness of wireless communication channel, or by tactfully designing transmission beamforming strategies without the need for a secret key. This dissertation presents a comprehensive study resulting in novel definitions, metrics and methods for the information-theoretic security in the wireless communication on above two tracks. In this dissertation, both the theoretical and the practical aspects of physical layer security (PLS) are concentrated on. One objective of this research is to study the security vulnerability of existing key extraction mechanisms from the randomness of wireless channels, propose attacks to these key extraction mechanisms and design a new key extraction protocol to defend against these attacks. With the fast growth of high-performance computing, the security of traditional cryptographic secret key establishment mechanisms are seriously challenged by computing-intensive attacks. As an alternative, considerable efforts have been made to develop PHY-layer security measures in recent years, such as link-signature-based (LSB) secret key extraction techniques. Those mechanisms have been believed secure, based on the fundamental assumption that wireless signals received at two locations are uncorrelated when they were separated by more than half a wavelength apart. However, this assumption does not hold in some circumstances under latest observations, rendering LSB key extraction mechanisms vulnerable to attacks. To advance the understanding of, and study the security of PHY-layer security approaches, this research first analyzes the channel correlation between two wireless channels. With this analysis, a kind of effective statistical inference attacks (SIA) against the existing LSB secret key schemes are developed, whereby an adversary infers the signature of a target link. Consequently, the secret key extracted from that signature has been recovered by observing the surrounding links. Prior work assumes theoretical link-correlation models for the inference, in contrast, this study does not make any assumption on link correlation. Instead, machine learning (ML) methods are applied for link inference based on empirically measured link signatures. Moreover, a countermeasure against the statistical inference attacks is designed, called the Forward-backward Cooperative Key Extraction Protocol with Helpers (FBCH). In the FBCH, helpers (other trusted wireless nodes) are introduced to provide more randomness in the key extraction. Another objective of this research focuses on the design and performance analysis of wireless transmission beamforming and power allocation strategies in simultaneous wireless information and power transfer (SWIPT) networks. This research first studies the problem of power allocation to maximize the transmission energy efficiency (TEE), while satisfying the security requirements in a wireless relay network. Then the information-theoretic security performance of millimeter wave (mmWave) SWIPT ultra-dense network under a stochastic geometry framework is investigated. To date, the secrecty performance of the mmWave SWIPT networks is still not well studied. Given the characteristics of mmWave communication (e.g., blockage and reflection), this work investigates the problem of eavesdropping success probability (ESP) of eavesdroppers under two attack strategies in general mmWave SWIPT networks model, named independent eavesdropping and colluding eavesdropping, respectively. The theoretical analysis and simulations are provided to reveal the effects of various network parameters, e.g., time switching factor, mmWave frequencies, density of nodes, and etc., on the secrecy performance.
A self-contained guide to the state-of-the-art in cooperative communications and networking techniques for next generation cellular wireless systems, this comprehensive book provides a succinct understanding of the theory, fundamentals and techniques involved in achieving efficient cooperative wireless communications in cellular wireless networks. It consolidates the essential information, addressing both theoretical and practical aspects of cooperative communications and networking in the context of cellular design. This one-stop resource covers the basics of cooperative communications techniques for cellular systems, advanced transceiver design, relay-based cellular networks, and game-theoretic and micro-economic models for protocol design in cooperative cellular wireless networks. Details of ongoing standardization activities are also included. With contributions from experts in the field divided into five distinct sections, this easy-to-follow book delivers the background needed to develop and implement cooperative mechanisms for cellular wireless networks.
A major, comprehensive professional text/reference for designing and maintaining security and reliability. From basic concepts to designing principles to deployment, all critical concepts and phases are clearly explained and presented. Includes coverage of wireless security testing techniques and prevention techniques for intrusion (attacks). An essential resource for wireless network administrators and developers.
Learn how information theoretic approaches can inform the design of more secure information systems and networks with this expert guide. Covering theoretical models, analytical results, and the state of the art in research, it will be of interest to researchers, graduate students, and practitioners working in communications engineering.