Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 30 for “"Physical-Layer Security"”.
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Physical layer security for IoT applications
… high reliability. In particular, finding strong security mechanisms that satisfy the above is of central importance for bringing the IoT to life. In this regards, employing physical layer security (PLS) methods could be greatly beneficial for IoT networks. While current security solutions rely on …
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Physical Layer Security in Millimeter-Wave Communication
… to the data encryption with cryptographic keys, physical layer security (PLS) is another effective technique to achieve secret communication. The inherent randomness of wireless channels are exploited to ensure the confidential information carried by the signals can only be obtained by the target …
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Wireless Network Physical Layer Security with Smart Antenna
… capability of improving wireless network security is relatively less explored. This dissertation focuses on exploiting the smart antenna technology to develop physical layer solutions to anti-eavesdropping and location security problems. We first investigate the problem of enhancing …
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Wireless Physical Layer Security: Towards Practical Assumptions and Requirements
The current research on physical layer security is far from implementations in practical networks, arguably due to impractical assumptions in the literature and the limited applicability of physical layer security. Aiming to reduce the gap between theory and practice, this thesis focuses on …
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Wireless Physical Layer Security: Towards Practical Assumptions and Requirements
The current research on physical layer security is far from implementations in practical networks, arguably due to impractical assumptions in the literature and the limited applicability of physical layer security. Aiming to reduce the gap between theory and practice, this thesis focuses on …
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Resource allocation and physical layer security in wireless communication systems
… in which spatial multiplexing is employed in the physical layer. The thesis consists of two main parts; in the first, the interest is focused on optimizing system's performance in terms of users' transmission rate. Under this context, a low-complexity but highly performing user selection algorithm …
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Software-Defined Radio Implementation of Two Physical Layer Security Techniques
This thesis discusses the design of two Physical Layer Security (PLS) techniques on Software Defined Radios (SDRs). PLS is a classification of security methods that take advantage of physical properties in the waveform or channel to secure communication. These schemes can be used to directly …
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A Quantum Technique for Monitoring Physical Layer Security of Optical Communication
… rapidly to meet growing traffic demands. Security issues, including attack management, have become increasingly important for optical communication networks owing to the vulnerabilities associated with tapping light from optical fibre link. Physical layer security often requires …
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Physical layer security: secrecy performance analysis and design of cooperative communication systems
Security aspects of wireless networks have gained increasing interest in the field of communication security. Due to the nature of wireless networks potential security risks, vulnerabilities and threats are still a possibility, such as eavesdropping and denial of service attacks, which have been an …
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Physical Layer Security for Wireless Position Location in the Presence of Location Spoofing
… location over the past decades, most location security aspects have been overlooked. Recently, with the proliferation of diverse wireless devices and the desire to determine their position, there is an increasing concern about the security of location information which can be spoofed or …
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Secure OFDM System Design for Wireless Communications
… approaches to secure wireless communications, physical layer security that is emerging as a complement to the traditional upper-layer security mechanisms is investigated in this dissertation. Five novel techniques toward the physical layer security of wireless communications are proposed. The …
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Quantum key distribution protocols with high rates and low costs
… and physicists. As a new area in cryptography, physical layer security has been paid great attention recently. Quantum key distribution is a hot research topic for physical layer security in the two decades. This thesis focuses on two quantum key distribution protocols that can potentially …
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Hardware Security for Wireless Communications Systems using Antenna-based Radio Frequency Fingerprint Engineering
<p>The design and application of novel physical-layer security techniques have been increasing in the last decades as means to enhance the security that more traditional techniques provide to wireless communications systems. Well-known hardware security techniques, such as radio frequency …
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Physical-Security for Wireless with Orbital Angular Momentum Wave
… of research. Conventional cryptography in higher layers of protocol stack has been studied as a data protection technique from an unauthorized party by converting secret data into a non-readable binary form. In this work, we leverage an OAM-wave-based transmission as an additional layer of …
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Addressing the challenges facing deep learning based Specific Emitter Identification via preamble based waveforms
… issues facing the field. SEI is targeted as a physical-layer security measure that can identify radios within an Internet of Things (IoT) deployment without the need of digital credentials. In the current space, DL SEI is still in its infancy, and has not had the incubation time for a …
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Efficient Authentication in High Security Wireless Sensor Networks
… these limitations and solutions introduce new security challenges that must be solved. This work enhances authentication in WSNs for high security scenarios. A review of available security solutions for wireless sensor networks found an over-emphasis on link-layer security. This is insufficient …
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Algorithms and architecture for multiusers, multi-terminal, multi-layer information theoretic security
… many new challenges in the area of information security. In this thesis we examine some approaches to security based on ideas from information theory. The protocols considered in this thesis, build upon the "wiretap channel," a model for physical layer security proposed by A. Wyner in 1975. At a …
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New Method for Directional Modulation Using Beamforming: Applications to Simultaneous Wireless Information and Power Transfer and Increased Secrecy Capacity
… It is unreasonable to expect privacy and security to be inherent in these networks given the spatial density of these devices, limited spectral resources, and the broadcast nature of wireless communications systems. Communications for these systems must have sufficient information capacity …
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