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.
Results
Showing 1 to 20 of 189 for “"Jamming"”.
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Requirements for keyless jamming mitigation
… is its resistance to interference and jamming. However, it has the drawback of requiring the pre-establishment of a secret code between sender and receiver. This requirement can lead to scaling and security issues, especially in a broadcast setting; as a result, several “uncoordinated” …
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Jamming and Unjamming in Cancer Cells
Jamming' ist ein faszinierender, nicht vollständig verstandener Prozess in der Physik der weichen Materie. Zelluläres Jamming' tritt auch in biologischem Gewebe auf und muss sich im Fall von Krebszellen im Tumorgewebe aufgrund der dichten Packung der Zellen über der dichtesten Kugelpackung anders …
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Sonar Jamming in the Bat-Moth Arms Race
… although the startle effect is ephemeral. The jamming hypothesis has not been confirmed to occur in nature.
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Machine Learning-based GPS Jamming and Spoofing Detection
… to malicious attacks, particularly GPS jamming and spoofing. This thesis presents an analysis into detection and mitigation strategies for enhancing the resilience of GPS receivers against jamming and spoofing attacks. The research entails the development of a simulated GPS signal and a …
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A Novel Fiber Jamming Theory and Experimental Verification
<p>This thesis developed a novel theory of fiber jamming and experimentally verified it. The theory relates the performance, which is the ratio between the stiff and soft states of a fiber jamming chamber, to three relative design parameters: the ratio of the wall thickness to the membrane inner …
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Community opposition to affordable housing : jamming the system
This thesis explores community opposition to affordable housing in the suburban communities of Massachusetts. In the twenty years since Chapter 774 was enacted, a significant amount of affordable housing has been developed. However, there are still many communi ties with less than the required ten …
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Anti-jamming MTI radar using variable pulse-codes
… radar is vulnerable to advanced repeat-back jamming techniques. Rapidly advancing technology producing inexpensive, high performance commercial off-the-shelf (COTS) components enable the construction of an electronic countermeasure (ECM) system capable of exploiting this vulnerability. This …
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Improving Implantable Medical Device Security Through Cooperative Jamming
… receiver. Although there are several cooperative jamming algorithms, they share the underlying principles of minimizing SINR at potential eavesdroppers while maximizing the SINR at the intended receiver. Researchers exploring cooperative jamming have largely used models to estimate its impact on …
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Resilient Navigation through Jamming Detection and Measurement Error Modeling
… Earth Orbit (MEO), making them vulnerable to jamming. The jamming threat has been growing over the past decade, putting critical services at risk. In response, the National Space-Based PNT Advisory Board and the White House advocate for policies and technologies to protect, toughen, and …
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Cooperative Jamming in Wireless Networks - Turning Attacks into Privacy Protection
… networks. We design this scheme, Cooperative Jamming in Wireless Networks (CJWN), to make use of collision to protect secret DATA packets from being sniffed by a nearby eavesdropper. We are intending to greatly increase the Packet Error Rate (PER) at the eavesdropper when the PER at the …
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Jamming transition and emergence of fracturing in wet granular media
… explain fracture initiation as emerging from a jamming transition, and synthesize the system's behavior in the form of a novel phase diagram of jamming for wet granular media.
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Analysis of Jamming-Vulnerabilities of Modern Multi-carrier Communication Systems
… have tried hard to continuously analyze the jamming threats and come up with improved countermeausres. In this research, we have analyzed the jamming-vulnerabilities of the leading multi-carrier communication systems, Orthogonal Frequency Division Multiplexing (OFDM) and Single-Carrier …
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Cluster based jamming and countermeasures for wireless sensor network MAC protocols
… duty cycle makes a node vulnerable to periodic jamming attacks. This vulnerability limits the use of use of a WSN in applications requiring high levels of security. We present a new WSN MAC protocol, RSMAC (Random Sleep MAC) that is designed to provide resistance to periodic jamming attacks …
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Analysis and detection of jamming attacks in an all-optical network
Thesis (M.S.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1998.
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BERT-Based Intrusion Detection System for RF Jamming Attacks in Vehicular Network
… threats, particularly Radio Frequency (RF) jamming attacks that can severely disrupt communication systems. This thesis presents a comprehensive study on the application of transformer-based models for RF jamming detection in intelligent transportation systems. Specifically, we evaluate the …
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From Vulnerability to Resilience: Securing Signal Transmission Against Jamming and Spoofing Attacks
… modern communication, but its susceptibility to jamming and spoofing attacks remains a major concern. These attacks have the potential to disrupt vital services, mislead devices, and compromise the integrity of wireless systems. Many researchers have addressed anti-jamming and anti-spoofing …
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A study of space-time adaptive array processing for cancellation of GPS jamming
Thesis (S.B. and M.Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1999.
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Use of Reinforcement Learning for Interference Avoidance or Efficient Jamming in Wireless Communications
… to jam a single-carrier system using time-domain jamming schemes. However, communications systems today typically employ orthogonal frequency division multiplexing (OFDM) to transmit data, particularly in 4G/5G networks. This work explores the use of linear Thompson Sampling (TS) to jam …
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Going Viral: A Critical, Post-Structural Exploration of Feminist Culture Jamming As Cultural Therapeutic
… this dissertation, I offer up feminist culture jamming – an activist practice of taking over mainstream media outlets such as magazines, billboards, or websites, and using them to promote atypical, feminist messages – as an example of a potential cultural therapeutic. Analyzing the work of six …
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Alibi framework for identifying insider jamming attacks in half-duplex wireless local area networks
… networks, unfortunately, are vulnerable to radio jamming attacks (in short, ``jamming attacks'') due to the open and shared nature of wireless medium. In a jamming attack, an attacker injects a high level of noise into the wireless system which significantly reduces the signal-to-noise ratio …
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