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 61 for “"Performance bounds"”.
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Performance bounds for greedy strategies in submodular optimization problems
To view the abstract, please see the full text of the document.
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Synchronization in digital communication systems: performance bounds and practical algorithms
… doctoral thesis investigates to what extent (performance bounds) and in what way (practical algorithms) the structure that the channel code enforces upon the transmitted signal can be exploited to improve the synchronization accuracy at low SNR.
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Frequency selective analog to digital converter design : optimality, fundamental limitations, and performance bounds
… with outputs taking values in a finite set. The performance measure is defined as the worst-case average intensity of the filtered input-matching error, i.e., the frequency weighted difference between the input and output of the ADC. An exact analytic solution with conditions for optimality of a …
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Performance bounds on matched-field methods for source localization and estimation of ocean environmental parameters
… waveguide propagation. Typical estimation performance demonstrates two fundamental limitations. First, sidelobe ambiguities dominate the estimation at low signal-to-noise ratio (SNR), leading to a threshold performance behavior. Second, most matched-field algorithms show a strong …
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Performance bounds on matched-field methods for source localization and estimation of ocean environmental parameters
… waveguide propagation. Typical estimation performance demonstrates two fundamental limitations. first, sidelobe ambiguities dominate the estimation at low signal-to-noise ratio (SNR), leading to a threshold performance behavior. Second, most matched-field algorithms show a strong …
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Queueing Network Analysis of Semiconductor Manufacturing Plants
We show how the performance bounds can be used to design wafer fabs. Specifically, one may formulate the problem as one of maximizing the performance subject to a capital cost constraint. Software has been developed both for performance bounds (called BoundFab) and for design (called DesignFab).
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Stability and performance of time-varying adaptive systems: Analysis and applications
… parameters, with an emphasis on obtaining performance bounds. While these issues have been extensively studied in the case of time invariant systems, time-varying systems have not received much attention. This thesis is divided into two parts, the first of which deals with the analytical …
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On the throughput efficiency of greedy maximal scheduling in wireless ad hoc networks
… However, GMS can result in degraded throughput performance in general wireless networks. In this thesis, we derive performance bounds of GMS for wireless networks under the general k-hop interference model. In particular, we prove that GMS achieves 100% throughput in all networks with eight …
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Information theoretic sensor management
… are utilized to measure detection or estimation performance. The work has two emphases: Firstly, we seek performance bounds which guarantee performance of the greedy heuristic and derivatives thereof in certain classes of problems. Secondly, we seek to extend these basic heuristic controllers to …
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L1 adaptive control augmentation system for the X-48B Aircraft
… Wing Body aircraft. We explicitly verify the performance bounds of the adaptive flight control system at various flight conditions. We demonstrate that the resulting L1 adaptive controller does not require tuning or redesign from one flight condition to another. Furthermore, once designed …
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Compressive Sensing
… optimization techniques. Although theoretical performance bounds for these techniques can be found scattered throughout the published literature, there are few practical rules for concrete problems. This thesis helps fill this gap by experimenting on the asymptotic bounds of the number of …
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Acoustic vector-sensor array processing
Existing theory yields useful performance criteria and processing techniques for acoustic pressure-sensor arrays. Acoustic vector-sensor arrays, which measure particle velocity and pressure, offer significant potential but require fundamental changes to algorithms and performance assessment. This …
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Computable Performance Analysis of Recovering Signals with Low-dimensional Structures
… general nonlinear data sets. The reconstruction performance of these signals relies heavily on the structure of the sensing matrix/operator. In many applications, there is a flexibility to select the optimal sensing matrix among a class of them. A prerequisite for optimal sensing matrix design is …
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A multi-armed bandit approach for batch mode active learning on information networks
… optimality analysis of MABAL based on performance bounds for combinatorial MAB. A case study illustrates that MABAL not only converges quickly to the optimal strategy but also provides insight into the functional roles of the different node types. Evaluations of MABAL on real world …
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Optimizing Random Access for Information Freshness in Spatially Distributed Wireless Networks
… be significantly improved, and we obtain tight performance bounds on weighted sum and min-max AoI. Finally, we design a policy where each node sets its transmission probability based only on its own distance from the base station, when it does not know the positions of other nodes, and show that …
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Specification And Mechanical Verification Of Performance Profiles Of Software Components
<p>Software performance predictability is vital to a system design and unpredictable performance is a leading cause of software failure. The emphasis of this dissertation is on verification that component-based software performs as specified. Performance profiles (specifications) depend on …
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Acoustic Coherence Imaging Through the Atmosphere
… field by presenting imaging methods and their performance in the turbulent atmosphere. Both narrowband interferometry and wideband techniques that can be solved using tomographic methods are presented. An extensive series of field experiments was conducted in which multiple sensor arrays of …
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Frequency Estimation of Linear FM Scatterometer Pulses Received by the SeaWinds Calibration Ground Station
… are assigned to each method to mark appropriate performance bounds, and improvements over previous SeaWinds data analysis methods are shown. Finally, recent estimates of SeaWinds parameters are disclosed. This analysis helps to advance the level to which future scatterometer instruments may be …
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L1 adaptive output-feedback control architectures
… of arbitrarily fast adaptation. Computed performance bounds provide quantifiable performance guarantees both for system output and control signal in transient and steady state. A noticeable feature of the L1 adaptive controller is that its output behavior can be made close to the behavior …
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FAST LEARNING ON GRAPHS
… data, presenting novel techniques with good performance both in theory and in practice. We assess the power of node classification based on class-linkage information only. In particular, we propose four new algorithms that exploit the homiphilic bias (linked entities tend to belong to the …
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