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 44 for “"Digital Filter"”.
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Sensitivity analysis of digital filter structures
… for state space recursive, finite wordlength, digital filters is developed and its relationship to the filter output quantization noise power is derived. The sensitivity measure is simply the sum of the L₂ norm of all first order partials of the system function with respect to the system …
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Optimal digital filter design for dispersed signal equalization
… this thesis, we investigate the derivation of a digital filter to compensate for the dispersion caused by the ionosphere. A transfer function model for the analysis of the ionosphere as a system is introduced. Based on the signal model, a matched filter response is derived. The problem is …
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Iterative least squares algorithms for digital filter design.
… to simplify and improve the design of IIR digital filters and M-band cosine modulated filter banks. These algorithms are based on the Iterative Least Squares (ILS) approach. We first review the various Iterative Reweighted Least Squares (IRLS) methods used to design Chebyshev and $L\sb{p}$ …
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Digital Filter Design Using Improved Artificial Bee Colony Algorithms
Digital filters are often used in digital signal processing applications. The design objective of a digital filter is to find the optimal set of filter coefficients, which satisfies the desired specifications of magnitude and group delay responses. Evolutionary algorithms are population-based …
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Simulation and implementation of fixed-point digital filter structures
… model based on a common general purpose Digital Signal Processor (DSP). A detailed non-linear model is developed to emulate the convergent (un-biased) rounding process performed by the Motorola DSP56002 fixed-point DSP. This model is incorporated into several different filter structures …
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The Use of Multiple Criterion Optimization in Digital Filter Design
… of multiple criterion optimization techniques to digital filter design. The potential role of multiple criterion optimization in digital filter design seems rather promising as the examples of Chapter 7 illustrate.
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Application of non-uniform sampling techniques to digital filter synthesis
… the non-uniform sampling technique as applied to digital filter designs will be made. The objective of the design is to reduce the interference problems as one would· encounter in using uniform sampling technique in the synthesis. An analysis of the error function which measures the goodness in …
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Digital Filter Design and Synthesis Using High-level Modeling Tools
… to designing Infinite Impulse Response (IIR) digital filters using high-level modeling tools. High-level modeling tools provide the ability to build and simulate ideal models. Once proper validation is complete on these ideal models, the user can then migrate to lower levels of abstraction …
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Wideband Digital Filter-and-Sum Beamforming with Simultaneous Correction of Dispersive Cable and Antenna Effects
Optimum filter-and-sum beamforming is useful for array systems that suffer from spatially correlated noise and interference over large bandwidth. The set of finite impulse response (FIR) filter coefficients used to implement the optimum filter-and-sum beamformer are selected to optimize …
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Tomographic Image Reconstruction via a Hankel Transform Approach and a Low-Noise Digital Filter Structure (Processing, Fourier-Bussel, Roundoff Errors)
We considered two independent problems.
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Global Search Methods for Solving Nonlinear Optimization Problems
… networks, (b) the design of quadrature-mirror-filter digital filter banks, (c) the satisfiability problem, (d) the maximum satisfiability problem, and (e) the design of multiplierless quadrature-mirror-filter digital filter banks. Our method achieves better solutions than existing methods, or …
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Tapping space and spacing taps: Topics in radar-astronomy imaging and sparse filter design
… radar (SAR) and finite impulse-response (FIR) digital filter design.
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ΣΧΕΔΙΑΣΗ ΔΙΣΔΙΑΣΤΑΤΩΝ ΨΗΦΙΑΚΩΝ ΦΙΛΤΡΩΝ ΑΠΕΙΡΗΣ ΚΡΟΥΣΤΙΚΗΣ ΑΠΟΚΡΙΣΗΣ ΜΕ ΝΕΕΣ ΜΕΘΟΔΟΥΣ ΒΕΛΤΙΣΤΟΠΟΙΗΣΗΣ
… TO THE DESIGN OF 2-D INFINITE IMPULSE RESPONSE DIGITAL FILTERS WITH LINEAR AND NON-LINEAR TECHNIQUES. THREE METHODS ARE PROPOSED FOR THE DESIGN OF DIGITAL FILTER. TWO OF THEM ARE BASED ON THE FORMULATION OF A LINEAR PROGRAMMING PROBLEM AND THE THIRD ONE USES NONLINEAR INTEGER PROGRAMMING. FOR …
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An investigation of speech synthesis parameters
… synthesis is that of a source modified by a digital filter. The major difference between a number of models is the form of the digital filter. The purpose of this research is to compare the properties of these filters when used for speech synthesis. Six models were investigated: (1) series …
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High Performance Applications on Reconfigurable Clusters
… engineering world are computationally intensive. Filtering using FIR (Finite Impulse Response) filters is an example to that. This thesis discusses the implementation of a fast, reconfigurable, and scalable FIR (Finite Impulse Response) digital filter. Constant coefficient multipliers and a Fast …
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Adaptive Blocker Cancellation For Wireless Receivers
… receiver. Current state-of-the-art analog filtering ADCs are analyzed and compared in detail. Recognizing that the analog circuitry requires accurate calibration and PVT correction, a digital filtering ADC in the baseband is proposed that has a digitally defined transfer function that is …
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Transient response of temperature sensors
… of noise is possible by using the Kalman filter which is a very powerful and impressive recursive estimator. The Kalman filter is basically a simple low-pass digital filter. The processed output is simply the weighted sum of the current input and the previous output and the results …
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Suppression of Limit Cycles in Digital Filters
… cycle oscillations in second-order direct form digital filter sections is discussed. Three types of dither signal are used: uniformly distributed random dither, binary randan dither and bandstop dither. All the limit cycles in the second-order filter sections can be suppressed by the injection …
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Frequency Domain Methods for Predicting the Transport of Non-Uniform Flow Through Turbomachinery Compressors
… pressure distortion patterns, and the use of digital filter techniques to capture the effect of a blade row on the total pressure distortion. Compressor characteristics, described by a frequency response function, are obtained from experimental data and are related to fundamental blade row …
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Optimization in Engineering Applications
… can be found in all aspects of engineering. From digital signal processing (DSP) to antenna analysis, optimization is used to design digital filter and antenna beamforming. In this research, we have applied optimization to engineering technologies that have great impact to society such as the …
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