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 11 of 11 for “"Artificial Noise"”.
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Physical layer encryption using fixed and reconfigurable antennas
… Such techniques include purposely broadcasting artificial noise, transmitting direction-dependent signals, and opportunistic communications. This work addresses different methods for broadcasting artificial noise using fixed arrays, including tradeoffs with power usage and computational …
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A Comprehensive Analysis Of Straight Line Estimation With A Novel Noise Dataset
… detectors. This thesis presents a novel noise dataset called Artificially Generated Objects with Noise (AGON), with the goal of advancing the state-of-the art in straight line segment detection and noise corruption research. Generating 27,195 synthetic images under 11 noise model …
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Directed self-assembly of block copolymers with functional materials : a study of nanocomposite thin film fabrication on graphoepitaxial templates
… also examined the limits of DSA by introducing artificial noise to mimic fabrication errors and studied the corresponding responses from BCP. This study demonstrates the potential of DSA of BCP in building thin film nanostructure of unconventional symmetries with functional components.
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Software-Defined Radio Implementation of Two Physical Layer Security Techniques
… Information from the intended receiver to inject Artificial Noise (AN) into the receiver's nullspace. The AN is consequently not seen by the intended receiver, however, it will interfere with eavesdroppers experiencing independent channel fading. The second design involves a single-carrier …
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DESIGN AND ANALYSIS OF COGNITIVE MASSIVE MIMO NETWORKS WITH UNDERLAY SPECTRUM SHARING
… systems by exploiting linear precoders and artificial noise (AN) generation in order to degrade the signal decodability at eavesdropper. The key design feature of the proposed cognitive systems is to leverage the spatial multiplexing strategies to serve a large number of spatially …
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Validation of MRtrix tractography for clinical use
… viability of tractography, the effect of adding artificial noise and patient movement to the input dMRI scans was examined. The performance of the following three MRtrix tractography algorithms was considered: the second-order integration over fibre orientation distributions (iFOD2) algorithm, …
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Robust Fuzzy Cluster Ensemble on Cancer Gene Expression Data
… requirements from the domain of biology. Data noise and data high dimensionality are among the top challenges. In this dissertation, we propose a novel fuzzy cluster ensemble methodology which is effective and efficient in addressing the data noise and data high dimensionality challenges. It …
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Land Ice Monitoring via GRACE and Satellite Altimetry in the Canadian Arctic Archipelago
… coefficients of shorter wavelengths produces artificial noise which has to be filtered. Four different filters were tested and assessed with respect to geophysical signal attenuation they induced. The impact of the different filtering has been neglected for ice applications up to now, however …
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Estimation of Variation For High-throughput Molecular Biological Experiments With Small Sample Size
… this thesis proposes novel solutions to reduce noise and increase the accuracy of molecular discovery.</p> <p><em>i)</em> In the large-scale perturbation screens, thousands of mutant strains on hundreds of plates are separately profiled in hundreds of days (or batches). For each mutant strain, …
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Improving Implantable Medical Device Security Through Cooperative Jamming
… beamforming-capable devices to collectively send artificial noise to eavesdroppers while ensuring the signal is successfully received by the intended receiver. Although there are several cooperative jamming algorithms, they share the underlying principles of minimizing SINR at potential …
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Resource allocation and secure communication design in simultaneous wireless information and power transfer systems
… the transmit covariance matrix and the artificial noise (AN)- aided covariance matrix. The designed OC-SRM problem for both models is non-convex due to the unsolvable probabilistic constraints. To solve this non-convex problem, the log determinant functions are first approximated to the …