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 35 for “"FIR Filter"”.
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Optimisation of multiplier-less FIR filter design techniques
… of multiplier-less (ML) finite impulse response (FIR) digital filters. The use of multiplier-less digital filters results in simplified filtering structures, better throughput rates and higher speed. These characteristics are very desirable in many DSP systems. This thesis concentrates on the …
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FIR filter design using Jacobian elliptic Sn function with wavelet applications.
This thesis presents a new method of digital FIR filter design based on the Jacobian elliptic sine function. In addition to a general design, a special result is obtained for Quadrature Mirror Filters (QMF) for use in multi-resolution filter banks. These are called Quasi-Dyadic FIR filters. Most of …
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Two-dimensional zero-phase FIR filter design with nonuniform frequency sampling
… zero-phase finite impulse response digital filters with nonuniform frequency samples. Using the freedom and flexibility of the nonuniform frequency sampling, several techniques for taking samples in the frequency plane have been proposed. The design problem is treated as a bivariate …
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A FIR Filter Embedded Millimeter-wave Front-end for High Frequency Selectivity
… mm-Wave wireless systems over W-band and beyond. First, various high-efficiency techniques such as impedance tuning with a reactive component at a cascoding stage in conventional stacked power amplifiers or load-pull based inter-stage matching technique, rather than conventional conjugate …
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Easy-filter: A Design, Verification, and Validation Tool for Finite Impulse Response (FIR) Filter
… automates the design implementation of the FIR filter, which engineers can easily modify in less time. The first step is to generate the design and testbench code of the FIR filter and simulate using Modelsim. The second step is to validate this design by comparing its results against …
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A Scaleable FIR Filter Implementation Using 32-bit Floating-Point Complex Arithmetic on a FPGA Base Custom Computing Platform
… presents a linear phase finite impulse response filter implementation developed on a custom computing platform called WILDFORCE. The work has been motivated by ways to off-load intensive computing tasks to hardware for indoor communications channel modeling. The design entails complex convolution …
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A new sufficient-order blind equalization scheme
… employing only adaptive finite impulse response (FIR) filter-based structures, perform poorly for maximum-phase communication channels having deep spectral nulls. This problem is due to the difficulty in modeling the inverse of the maximum-phase communication channel with a finite-length adaptive …
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ΣΧΕΔΙΑΣΗ ΟΙΚΟΝΟΜΙΚΩΝ F.I.R. ΦΙΛΤΡΩΝ ΓΙΑ ΣΗΜΑΤΑ ΔΙΑΜΟΡΦΩΣΗΣ Δ
… OF THIS THESIS IS THE DESIGN OF ECONOMICAL FIR FILTERS FOR DELTA MODULATION SIGNALS (D.M. FILTERS). THE MOTIVATION FOR THIS RESEARCH WAS THE OUT-COME OF THE FOLLOWING TWO CONSIDERATIONS A: THE IMPLEMENTATION OF FIR FILTER IN GENERAL REQUIRES ALOT OF HARDWARE, B. THE SIMPLICITY OF THE …
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PIC 18F452 implementation of digital filters
… the designing and implementation of two types of filters for the PIC 18F452 microcontroller. The main purpose of this research is to implement a floating-point least mean square (LMS) error adaptive filter and its secondary goal is a fixed-point implementation of finite impulse response (FIR) …
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Composition structures for system representation
… larger classes of systems or functions. The first part of this thesis considers operator composition, which is an alternative interpretation of the class of cascade systems that has been widely studied in signal processing. As an important class of linear time-invariant (LTI) systems, we …
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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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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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Equalizers for communications satellites
… addressed questions about noise amplification, filter complexity requirements, and narrow band performance degradation. After examining various architectures, it was determined that the FIR filter was the best equalizer structure given the nature of the channel. The basic calibration procedure …
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Sub -Nyquist Multicoset and MIMO Sampling: Perfect Reconstruction, Performance Analysis, and Necessary Density Conditions
… we address the problem of reconstruction FIR filter design, formulating it as a minimization and recasting as a standard semi-infinite linear program. Owing to the generality of the MIMO sampling scheme, the design algorithm readily applies to several sampling schemes for multiband signals.
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Parametric design of an adaptive line enhancer for multiple switching tones in a correlated noise environment
… how a Fast Gradient approximation to a Lattice Filter can be used as an Adaptive Line Enhancer for sampled data consisting of multiple switching tones in correlated noise. A tradeoff analysis is performed with four methods of digital filtering including a conventional Digital Fourier Transform …
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Asynchronous 3D (Async3D): Design Methodology and Analysis of 3D Asynchronous Circuits
… NCL and MTNCL circuits in 3D IC. Several FIR filter designs were implement in NCL, MTNCL, and synchronous architecture to compare synchronous and asynchronous circuits in 2D and 3D ICs. The designs were normalized based on performance and several metrics were measured for comparison. Area, …
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Design of High-Resolution SAR ADC for Detection of Sub-Cortical Neuron Action Potentials for BMI Applications
… in the analog front-end, alongside a digital FIR filter and SAR logic with zoom-range control in the digital domain. Simulations validate the functionality of each subsystem independently and in concert, demonstrating the system’s ability to dynamically isolate APs from LFP-dominated baselines …
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A micropower DSP for sensor applications
… strategy, hardware accelerator cores for FIR filter and FFT operations, and extensive power gating of both logic and memory. The tradeoffs of cache size, line length, and replacement policy for very small (a few hundred words or less) caches are explored, as are the design implications of …
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CPM Equalization to Compensate for ISI due to Band Limiting Channels
… (ISI) that results from band-limiting filters. We propose two approaches to the problem of equalization of band-limited CPM signals. First, our efforts are focused on shortening the channel impulse response so that we can use a low complexity MLSE equalizer. We implement the channel …
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PARALLEL ARCHITECTURES FOR REAL-TIME SAR RANGE-DOPPLER PROCESSING AND QUALITY AUTOMATIC FOCUSING ALGORITHM
… designs for both the front-end video pre-filtering and systolic image formation are proposed. We named this HEMPSAR, which is the acronym for "Highly Efficient, Massively Parallel SAR processor. The SAR preprocessor is characterised by simultaneous DC bias cancellation and azimuth …
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