Physical layer security in wireless communications

Physical layer security has recently become an emerging technique to complement and significantly improve the communication security of wireless networks. Comparing to the cryptographic approaches, physical layer security is a fundamentally different paradigm, where secrecy is achieved by exploiting the physical layer properties of the communication system, such as thermal noise, interference, and the time-varying nature of fading channels. Written by pioneering researchers, this book provides a systematic overview of the foundations and recent developments of this promising security technology"

Key Generation From Wireless Channels Introduction Information Theoretic Models for Key Generation Key Generation via Unlimited Public Discussion Key Generation with Rate Constraint in Public Discussion Key Generation with Side-information at Eve Basic Approaches for Key Generation via Wireless Networks A Joint Source-Channel Key Agreement Protocol Key Agreement With a Public Channel Key Agreement Without a Public Channel Relay-Assisted Key Generation With a Public Channel Relay-Assisted Key Generation with One Relay Relay-Assisted Key Generation with Multiple Relays Relay-Oblivious Key Generation Key Agreement with the Presence of an Active Attacker Training Phase Key Generation Phase Conclusion Acknowledgement References Secrecy With Feedback Introduction The Gaussian Two-Way Wiretap Channel Achieving Secrecy using Public Discussion Achieving Secrecy using Cooperative Jamming Full Duplex Node Half Duplex Node Achieving Secrecy through Discussion and Jamming Jamming with Codewords Secrecy Through Key Generation Block Markov Coding Scheme When the Eavesdropper Channel States Are Not Known Converse Outer Bounds Discussion Conclusion Proof of Theorem 5.7.5 Proof of Theorem 5.7.6 References

Physical Layer Security in OFDMA Networks Introduction Related Works on Secure OFDM/OFDMA Networks Secure OFDM Channel Secure OFDMA Cellular Networks Secure OFDMA Relay Networks Secure OFDM with Implementation Issues Basics of Resource Allocation for Secret Communications Power Allocation Law for Secrecy Multiple Eavesdroppers Resource Allocation for Physical Layer Security in OFDMA Networks Problem Formulation Optimal Policy Suboptimal Algorithm Complexity Numerical Examples Discussion on False CSI Feedback Conclusions and Open Issues References The Application of Cooperative Transmissions to Secrecy Communications Introduction When all Nodes are Equipped with a Single Antenna Cooperative Jamming Relay Chatting MIMO Relay Secrecy Communication Scenarios When CSI of eavesdroppers Is known When CSI of eavesdroppers Is unknown Conclusion Acknowledgement References

Relay and Jammer Cooperation as a Coalitional Game Introduction Cooperative Relaying and Cooperative Jamming Relay and Jammer Selection Coalitional Game Theory Chapter Outline System Model and Problem Formulation Relay and Jammer Cooperation as a Coalitional Game Coalitional Game Definition Properties of the Proposed Coalitional Game Coalition Formation Algorithm Coalition Formation Concepts Merge-and-Split Coalition Formation Algorithm Conclusions and Open Issues References Stochastic Geometry Approaches to Secrecy in Large Wireless Networks Introduction Motivation Stochastic Geometry Approaches Secrecy Graph Network and Graph Model Local Connectivity Properties Global Connectivity Properties Connectivity Enhancements Secrecy Transmission Capacity Network Model Capacity Formulation Illustrative Example Current Limitations and Future Directions References Physical Layer Secrecy in Large Multi-Hop Wireless Networks Introduction Background: Physical-Layer Security in One-Hop Networks Secure Connectivity: The Secrecy Graph Secure Capacity Background: Throughput Scaling in Large Wireless Networks Secrecy Scaling with Known Eavesdropper Location Secrecy Scaling with Unknown Eavesdropper Locations Conclusion and Future Work Acknowledgement References

MIMO Signal Processing Algorithms for Enhanced Physical Layer Security Introduction Physical-Layer Security Signal Processing Aspects Secrecy Performance Metrics The Role of CSI MIMO Wiretap Channels Complete CSI Partial CSI MIMO Wiretap Channel with an External Helper MIMO Broadcast Channel MIMO Interference Channel MIMO Relay Wiretap Networks Relay-Aided Cooperation Untrusted Relaying Conclusions References Discriminatory Channel Estimation for Secure Wireless Communication Introduction Discriminatory Channel Estimation -- Basic Concept DCE via Feedback and Retraining Two-Stage Feedback-and-Retraining Multiple Stage Feedback and Retraining Simulation Results and Discussions Discriminatory Channel Estimation via Two-Way Training Two-Way DCE Design for Reciprocal Channels Two-Way DCE Design for Non-Reciprocal Channels Simulation Results and Discussions Conclusions and Discussions Acknowledgement References.