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CONF ON advanced signal processing algorithms, architectures, AND implementations 2

作者： QIAO, SZ McMaster Univ. (Canada)

ISBN: (纸本)0819406945

A new derivation of the QR-based fast recursive least squares algorithms for Toeplitz matrices is presented. algorithms for computing Q and R in the QR decomposition of the data matrix are proposed. These algorithms can be efficiently incorporated with the fast recursive least squares algorithm and can be performed only when they are needed.

关键词： Matrices signal processing Algorithm development Chemical elements Computer architecture Radon Analytical research Computer programming Computer simulations Numerical analysis

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Linear invariant systems

Linear invariant systems

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Conference on advanced signal processing algorithms, architectures, and implementations xviI

作者： Cohen, Leon CUNY New York NY 10021 USA

ISBN: (纸本)9780819468451

We formulate in a simple fashion the concept of invariance for a linear system. We show that one must define what we call an "associated Hermitian operator"' which commutes with the system function. We show that it is this Hermitian operator that defines the invariance and also determines the appropriate transform and other connections between input and output relations.

关键词： signal processing

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The instantaneous frequency of a propagating pulse

The instantaneous frequency of a propagating pulse

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Conference on advanced signal processing - algorithms, architectures, and implementations VII

作者： Cohen, L City University of New York Hunter College New York NY 10021 695 Park Ave. United States

We calculate the instantaneous frequency at a fixed position of a propagating pulse in the asymptotic regime. We also discuss the multimode case and relate it to the concept of instantaneous bandwidth.

ISBN: (纸本)0819425842

关键词： signal detection

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Reconfigurable hardware based digital signal processing for wireless communications

Reconfigurable hardware based digital signal processing for ...

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Conference on advanced signal processing - algorithms, architectures, and implementations VII

作者： Page, KJ Arrigo, JF Chau, PM Univ. of California/San Diego (United States)

ISBN: (纸本)0819425842

This paper presents, Index Mapping, a technique to efficiently map a widely used class of digital signal processing algorithms onto a space/time paradigm with immediate representation as the partitioning and scheduling map of a small, I/O efficient, hardware array. When applied to reconfigurable FPGA based hardware architectures with downstream Sea-of-Gates optimization methods, the resulting systems form a dynamic signal processing environment with the best mix of performance and flexibility for wireless applications. Herein, Index Mapping is demonstrated with a mapping of the Fast Fourier Transform (FFT) onto an FPGA computing machine, the ReConfigurable Processor (RCP).

关键词： shuffle linear permutation FFT index map folding

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UNIFYING PARAMETRIZED VLSI JACOBI algorithms AND architectures 4

UNIFYING PARAMETRIZED VLSI JACOBI ALGORITHMS AND ARCHITECTUR...

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4TH CONF ON advanced signal processing algorithms, architectures, AND implementations

作者： DEPRETTERE, EF MOONEN, M Delft Univ. of Technology (Netherlands) Katholieke Univ. Leuven (Belgium)

ISBN: (纸本)0819412767

Implementing Jacobi algorithms in parallel VLSI processor arrays is a non-trivial task, in particular when the algorithms are parametrized with respect to size and the architectures are parametrized with respect to space-time trade-offs. The paper is concerned with an approach to implement several time-adaptive Jacobi-type algorithms on a parallel processor array, using only Cordic arithmetic and asynchronous communications, such that any degree of parallelism, ranging from single-processor up to full-size array implementation, is supported by a `universal' processing unit. This result is attributed to a gracious interplay between algorithmic and architectural engineering.

关键词： Array processing signal processing Very large scale integration Computer aided design Parallel computing Process control MATLAB Computer architecture Detection and tracking algorithms Electrical engineering

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Time-frequency characterization of acoustic transients

Time-frequency characterization of acoustic transients

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Conference on advanced signal processing - algorithms, architectures, and implementations VII

作者： Rohrbaugh, R Naval Surface Warfare Ctr. (United States)

ISBN: (纸本)0819425842

Impulsive transient signals have been difficult to characterize and classify using traditional signal processing methods. We show that time-frequency distributions can effectively characterize the transient response of an acoustical cavity. Class-dependent kernels developed from time-frequency distributions are used to successfully classify the impulsive transients.

关键词： Time-frequency analysis signal processing Acoustics Aluminum Glasses Fourier transforms Frequency modulation Interfaces Phase shift keying Wave propagation

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RECENT RESULTS IN ADAPTIVE ARRAY DETECTION

RECENT RESULTS IN ADAPTIVE ARRAY DETECTION

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CONF ON advanced signal processing algorithms, architectures, AND implementations 2

作者： KALSON, SZ Lincoln Lab./MIT (United States)

ISBN: (纸本)0819406945

Some recent results in the theory of adaptive array detection are presented. Detection curves are given for various detection algorithms. These detection algorithms are suitable for nulling out noise or interference sources in which the noise statistics are to be estimated from target- free data. They share the constant false alarm rate property, so that their false alarm rate can be set without knowledge of the noise covariance matrix. Also considered is a detection algorithm employing diagonal loading.

关键词： Sensors signal detection Detection and tracking algorithms signal attenuation Phased arrays signal processing Detector arrays Target detection Monte Carlo methods signal to noise ratio

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VLSI architectures for lattice structure based orthonormal discrete wavelet transforms

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IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-ANALOG AND DIGITAL signal processing 1997年第2期44卷 129-132页

作者： Denk, TC Parhi, KK Department of Electrical Engineering University of Minnesota Minneapolis MN USA

This brief presents efficient single-rate architectures for the one-dimensional orthonormal discrete wavelet transform (DWT). This brief makes two contributions, First, we show that architectures that are based on the quadrature mirror filter (QMF) lattice structure require approximately half the number of multipliers and adders than corresponding direct-form structures. Second, we present techniques for mapping the 1-D orthonormal DWT to folded and digit-serial architectures which are based on the QMF lattice structure. For folded architectures, we discuss two techniques for mapping the QMF lattice structure to hardware. For digit-serial architectures, we show that any two-channel subband system can be implemented using digit-serial processing techniques by utilizing the polyphase decomposition Using this result, we describe an orthonormal DWT architecture which uses the QMF lattice structure and digit-serial processing techniques, The proposed folded and digit-serial QMF lattice structures are attractive choices for implementations of the orthonormal DWT which require low area and low power dissipation.

关键词： Discrete wavelet transforms Very large scale integration Lattices Computer architecture Filter bank Finite impulse response filter signal processing algorithms Mirrors Hardware Power dissipation

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Generalization of the autocorrelation function

Generalization of the autocorrelation function

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SPIE Conference on advanced signal processing algorithms, architectures, and implementations VIII

作者： Cohen, L CUNY Hunter Coll New York NY 10021 USA

ISBN: (纸本)0819429163

We generalize the concept of the autocorrelation function to arbitrary physical variables and show how it can be used to define a local autocorrelation function. Using the local autocorrelation function we develop a new method to generate densities for arbitrary physical quantities. In addition, we show that the generalized autocorrelation function can be used to characterize functions with respect to a physical property.

关键词： Time-frequency analysis Fourier transforms Astatine signal processing

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Solution of differential equations using the smoothed Wigner distribution

Solution of differential equations using the smoothed Wigner...

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Conference on advanced signal processing algorithms, architectures, and implementations XI

作者： Galleani, L Cohen, L Politecn Torino I-10129 Turin Italy

We present a method for writing the differential equation for the smoothed Wigner distribution that corresponds to the solution of an ordinary linear differential equation. The method can be applied on an, linear ordi... 详细信息

ISBN: (纸本)0819441880

关键词： Differential equations Ordinary differential equations Standards development Convolution Fourier transforms Smoothing Einsteinium Partial differential equations signal processing Time-frequency analysis

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