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 140 for “"Estimation error"”.
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The Impact of Channel Estimation Error on Space-Time Block and Trellis Codes in Flat and Frequency Selective Channels
… this thesis we investigate the impact of channel estimation error on the performance of both STBC and STTC. Channel estimation is especially important to consider in multiple antenna systems since (A) for coherent systems there are more channels to estimate due to multiple antennas and (B) the …
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Consumers’ accuracy in estimating energy content of common foods in New Zealand (EIT Food Energy Survey)
… commonly consumed in New Zealand and how this estimation ability might be related to their age, gender or BMI. This quantitative study asked the participants to estimate the energy content of 15 foods via images in a SurveyMonkeyTM online questionnaire. Two hundred and fifty-four individuals …
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"ΒΙΟΜΗΧΑΝΙΚΗ ΑΞΙΑ" ΚΑΤΗΓΟΡΙΩΝ ΑΠΟΘΕΜΑΤΩΝ ΩΣ ΠΑΡΑΓΟΝΤΑΣ ΓΙΑ ΤΗ ΛΗΨΗ ΕΠΕΝΔΥΤΙΚΩΝ ΑΠΟΦΑΣΕΩΝ
… THE MEANS OF DEFINING THE EFFECT OF THE RESERVE ESTIMATION ERROR ON THE DESIRABILITY OF MINING A DEPOSIT. IT IS KNOWN THAT MINERAL RESERVES CAN BE CLASSIFIED ACCORDING TO THE DEGREE OF GEOLOGICAL ASSURANCE, WHICH IS BEST EXPRESSED BY THE ABOVE-MENTION ESTIMATION ERROR (CLASS A, B, ETC). IN CASE …
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Performance Evaluation of Multiuser Detectors with V-BLAST to MIMO Channel
… Next, the V-BLAST algorithm is reviewed and the error propagation of this algorithm is investigated. Then, the V-BLAST algorithm is combined with multiuser receivers to achieve high channel capacity while sharing the spectral resources over a MIMO channel. A bias reduction technique is considered …
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Adding direction to a directionless world
… and previous work in RSSI based radio distance estimation, this work shows that using directional antennas alone, the angle between two devices can be approximated. Furthermore, this thesis shows the effect of distance estimation error on angle estimation and how the number of samples affects …
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Dynamic Probability Control Limits for Risk-Adjusted Bernoulli Cumulative Sum Charts
… for a surgeon or hospital. The effect of estimation error on performance of risk-adjusted Bernoulli CUSUM chart with DPCLs is also examined. Our simulation results show that the in-control performance of risk-adjusted Bernoulli CUSUM chart with DPCLs is affected by the estimation error. …
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Probabilistic trust models in network security
… is formally analysed in terms of a notion of ‘estimation error’.<br/><br/>Using an experimental approach based on Monte-Carlo methods to evaluate the expected estimation error, the introduced HMM-based framework for trust and reputation is compared to the existing Beta framework. The results …
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Lunar orbiter state estimation using neural network-based crater detection
… trajectory, and that enables more reliable state estimation over a trajectory. A LunaNet-based EKF experiences fewer spikes in estimation error and has lower average estimation error than EKFs using other successful crater detectors.
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Modeling Diesel Bus Fuel Consumption and Dynamically Optimizing Bus Scheduling Efficiency
… bus cycle dynamometer test produce an average error of 4.7%. The estimation error is less than 6% for all but two buses with a maximum error of 10.66% for one hybrid bus. The VT-CPFM is also validated using on-road fuel consumption measurements that are derived by creating drive cycles from …
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Functional Regression and Adaptive Control
… novel functional regression method for parameter estimation and adaptive control in this dissertation. In the functional regression method, the regressors and a signal which contains the information of the unknown parameters are either determined from raw measurements or calculated as the …
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Optimal sensor scheduling and remote estimation over an additive noise channel
… making strongly depends on the quality of state estimation. On the other hand, the sensors are constrained by limited power and cannot always communicate with the decision unit. As a consequence, a communication scheduling strategy and an estimation strategy should be designed for the sensors and …
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Intelligent Flight Control Systems Using Adaptive Deep Neural Networks and Concurrent Learning-Based Design Methods
… Specifically, this result includes a detailed error system development formally incorporating realistic measurement errors in the recorded data stack; a Lyapunov-based stability analysis deriving a sufficient condition on the diversity of the recorded data stack under which the tracking error …
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Novel multiuser detection and multi-rate schemes for multi-carrier CDMA
… by a receiver based on the minimum mean-square error (MMSE) criterion with a built-in de-biasing feature. Like many other multiuser schemes, this receiver is very sensitive to a delay estimation error. A blind adaptive two-stage decorrelating receiver based on the "bootstrap algorithm" is …
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IS A PENSION FUND'S MIX OF FAIR VALUE INVESTMENTS, AUDIT TYPE, AND AUDIT QUALITY ASSOCIATED WITH THE FIRM'S CREDIT RATING?
… (or marked-to-model) securities contain larger estimation error and uncertainty. Such valuation problems may concern credit reporting agencies because the sponsoring firm’s pension plan liability is uncertain. This problem is exacerbated through agency relationships within pension plans that …
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Essays on asymptotic methods in econometrics
… this feature deems consistent and equivariant estimation of a weakly regular parameter impossible, we show that there exists an underlying parameter that is regular and fully characterizes the weakly regular parameter. Using the minimal sufficient underlying regular parameter, we define weak …
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Sensor Networks: Studies on the Variance of Estimation, Improving Event/Anomaly Detection, and Sensor Reduction Techniques Using Probabilistic Models
… 1) graphical analysis of the variance of the estimation error caused by physical characteristics of an acoustic target source and its geometric location relative to sensor arrays, 2) event/anomaly detection method for time aggregated point sensor data using a parametric Poisson distribution …
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Uncertainty Quantification of Tightly Integrated LiDAR/IMU Localization Algorithms
… which is the probability that the navigation error exceeds predefined acceptability limits. IMU data improves LiDAR position and orientation (pose) prediction and LiDAR limits the IMU error drift over time. In addition, LiDAR return-light intensity measurements improve landmarks recognition. …
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Development and application of a multistate model to the northern subpopulation of loggerhead sea turtles
… the northern subpopulation. For the first time, estimation error around estimates of benthic juvenile and adult survival rates was included in a loggerhead sea turtle model. I explored the effects of estimation error, three levels of clutch frequency, and larger TED openings on population growth …
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Channel Estimation Overhead Reduction for Downlink FDD Massive MIMO Systems
… (DL) suffer significantly from the channel estimation overhead. In this thesis, we propose a minimum mean square error (MMSE)-based channel estimation framework that exploits the spatial correlation between the antennas at the BS to reduce the latter overhead. We investigate how the number …
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