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.
Results
Showing 1 to 20 of 33 for “"FIR filters"”.
-
Power reducing algorithms in FIR filters
Thesis (M. Eng.)--Massachusetts Institute of Technology, Dept. of Electrical Engineering and Computer Science, 1997.
-
Perfect Reconstruction Filter Bank Structure Based On Interpolated FIR Filters
… a new filter bank structure, the interpolated FIR (IFIR) filter bank is developed. Such a structure combines the concepts of filter banks, and interpolated FIR filters. The filter design procedures for the IFIR filter bank are developed and explained. The resulting structure was compared with …
-
Reconfigurable Discrete-time Analog FIR filters for Wideband Analog Signal Processing
… analog-to-digital converter (ADCs) and digital filters for wideband signals. In this environment, discrete-time (DT) domain circuits are gaining attention in various architectures such as N-path filters, sampling mixers, and analog FIR/IIR/FFT filters. DT analog signal processing (DT-ASP) ahead …
-
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 …
-
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) …
-
Harmonic and Narrowband Disturbance Rejection for Linear Time-Periodic Plants
… designs using finite impulse response (FIR) filters and H-infinity synthesis tools, and adaptive feedforward controllers. The objective of time-periodic, narrowband, disturbance rejection seeks to place a zero in the controlled system's disturbance path and align the zero direction, …
-
Wireless Neural Recording and Stimulation SoCs for Monitoring and Treatment of Intractable Epilepsy
… and treatment of intractable epilepsy. The first prototype SoC is a neural recording interface intended for wireless monitoring of intractable epilepsy. The 0.13um CMOS SoC has 64 recording channels, 64 programmable FIR filters and an integrated 915MHz FSK PLL-based wireless transmitter. …
-
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 …
-
Wavelet Factorization and Related Polynomials
… polyphase matrices for finite impulse response (FIR) filters. In particular, we focus on nearest neighbor factorizations discussed by Wickerhauser and Zhu that allow for efficient implementation of the discrete wavelet transform (DWT) for the algorithms of Daubechies and Sweldens and Mallat. …
-
ΓΡΗΓΟΡΟΙ ΑΛΓΟΡΙΘΜΟΙ ΓΙΑ ΤΗΝ ΤΑΥΤΟΠΟΙΗΣΗ ΣΥΣΤΗΜΑΤΩΝ ΜΕ ΓΡΑΜΜΙΚΗ ΦΑΣΗ
FIR FILTERS WITH LINEAR PHASE ARE WIDELY USED IN MANY APPLICATIONS SUCH AS COMMUNICATIONS, SPECTRAL ANALYSIS, IMAGE PROCESSING, SPEECH PROCESSING, BIOENGINEERING ETC. THE LS ESTIMATE OF THE IMPULSE RESPONSE OF SUCH FILTERS IS KNOWN TO BEGIVEN BY A STRUCTURED LINEAR SET OF EQUATIONS. IN THIS …
-
Using Bayesian Inference in Design Applications
… of antenna arrays and finite impulse response (FIR) filters. In this approach, a design problem is cast as an inverse problem. The tools and methods previously developed for Bayesian inference are adapted and utilized to solve design problems. Given a desired design output, Bayesian parameter …
-
Recursive backpropagation algorithm applied to a globally recurrent neural network
… in the same way infinite impulse response (IIR) filters can replace longer finite impulse response (FIR) filters. This thesis presents a new adaptive algorithm that trains recursive neural networks. This algorithm is based on least mean square (LMS) algorithms designed for other adaptive …
-
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 …
-
Iterative least squares algorithms for digital filter design.
… 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 $L\sb{p}$ linear …
-
Towards detecting gravitational waves from the Crab Pulsar
… using commonly available sensors and standard FIR filters. Attenuation of 60Hz noise is particularly important to LIGO due to the 59.7 Hz radiation frequency of the Crab pulsar. Application of the techniques developed in this work to the LIGO detectors promises to improve the signal to noise …
-
Design and implementation of discrete-time filters for efficient sampling rate conversion
… some bandwidth of interest, and high-quality filters are often implemented at this fast rate. Therefore, their designs tend to be computationally expensive. A number of structures have been proposed to address this, including polyphase implementations and folded structures for linear-phase FIR …
-
Conversor DSB-SSB a capacitores chaveados por transformador de Hilbert em tecnologia CMOS de 180 nm
… by means of high-order Finite Impulse Response (FIR) filters. Fabricated in a 180 nm CMOS technology with metal-metal (MiM) capacitors, the use of structurally all-pass filters greatly reduces the converter’s sensitivity to capacitor mismatch. For 1.8 V power supply and 1 V differential …
-
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 …
-
Linear analysis and optimization of stream programs
… programs as a hierarchical graph of autonomous filters. A filter is linear if each of its outputs can be represented as an affine combination of its inputs. Linearity is common in DSP components; examples include FIR filters, expanders, compressors, FFTs and DCTs. We demonstrate that several …
-
Low power, reduced complexity filtering and improved tracking accuracy for GNSS
… the Analog to Digital Converter (ADC)by the filters associated with the decimation process. The power dissipation and the hardware complexity of the decimator can be reduced substantially by using a minimum-phase Infinite Impulse Response (IIR) filter. For Global Positioning System (GPS) …
Page 1 of 2