Journal ArticleDOI
Wireless Information-Theoretic Security
TLDR
A practical secure communication protocol is developed, which uses a four-step procedure to ensure wireless information-theoretic security and is shown that the protocol is effective in secure key renewal-even in the presence of imperfect channel state information.Abstract:
This paper considers the transmission of confidential data over wireless channels. Based on an information-theoretic formulation of the problem, in which two legitimates partners communicate over a quasi-static fading channel and an eavesdropper observes their transmissions through a second independent quasi-static fading channel, the important role of fading is characterized in terms of average secure communication rates and outage probability. Based on the insights from this analysis, a practical secure communication protocol is developed, which uses a four-step procedure to ensure wireless information-theoretic security: (i) common randomness via opportunistic transmission, (ii) message reconciliation, (iii) common key generation via privacy amplification, and (iv) message protection with a secret key. A reconciliation procedure based on multilevel coding and optimized low-density parity-check (LDPC) codes is introduced, which allows to achieve communication rates close to the fundamental security limits in several relevant instances. Finally, a set of metrics for assessing average secure key generation rates is established, and it is shown that the protocol is effective in secure key renewal-even in the presence of imperfect channel state information.read more
Citations
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Journal ArticleDOI
Physical Layer Security in Multi-Cell MISO Downlinks With Incomplete CSI—A Unified Secrecy Performance Analysis
Xiaoming Chen,Hsiao Hwa Chen +1 more
TL;DR: A unified performance analysis for physical layer security with incomplete CSI is conducted, and closed-form expressions of ergodic secrecy rate, secrecy outage probability, and interception probability are derived, considering CSI estimation accuracy, transmit signal to noise ratio (SNR), and channel condition.
Proceedings ArticleDOI
Robust Spectrum Sensing with Crowd Sensors
TL;DR: This paper proposes a robust spectrum sensing scheme by developing a data cleansing framework, where the underutilization of licensed spectrum bands and the sparsity of non zero abnormal data are jointly exploited to robustly cleanse out the potential nonzero abnormal data component from the original corrupted sensing data.
Posted Content
Security-Reliability Trade-off Analysis of Multi-Relay Aided Decode-and-Forward Cooperation Systems
TL;DR: It is demonstrated that as the outage requirement is relaxed, the intercept performance of the three schemes improves, and vice versa, implying that there is a security-versus-reliability tradeoff (SRT).
Proceedings ArticleDOI
Enhanced physical layer security through transmit antenna selection
TL;DR: The results show that the secrecy outage probability is considerably increased when multiple antennas are available at the legitimate transmitter, and due to the use of the TAS technique, the eavesdropper is not able to exploit the additional spatial diversity offered by theitimate transmitter.
Journal ArticleDOI
Resource Allocation for Cognitive Radio With Primary User Secrecy Outage Constraint
TL;DR: It is shown that the proposed strategies can well protect the PU in terms of secrecy outage probability even with imperfect CSI and simultaneously provide transmission opportunities for the SUs.
References
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Wireless Communications: Principles and Practice
TL;DR: WireWireless Communications: Principles and Practice, Second Edition is the definitive modern text for wireless communications technology and system design as discussed by the authors, which covers the fundamental issues impacting all wireless networks and reviews virtually every important new wireless standard and technological development, offering especially comprehensive coverage of the 3G systems and wireless local area networks (WLANs).
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New Directions in Cryptography
TL;DR: This paper suggests ways to solve currently open problems in cryptography, and discusses how the theories of communication and computation are beginning to provide the tools to solve cryptographic problems of long standing.
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Communication theory of secrecy systems
TL;DR: A theory of secrecy systems is developed on a theoretical level and is intended to complement the treatment found in standard works on cryptography.
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Fundamentals of Wireless Communication
David Tse,Pramod Viswanath +1 more
TL;DR: In this paper, the authors propose a multiuser communication architecture for point-to-point wireless networks with additive Gaussian noise detection and estimation in the context of MIMO networks.