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检索条件"任意字段=Conference on Advanced Signal Processing Algorithms, Architectures, and Implementations X"

共 461 条记录，以下是81-90 订阅

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HIGHLY PIPELINED VLSI ARCHITECTURE FOR COMPUTATION OF FAST FOURIER-TRANSFORMS 4

HIGHLY PIPELINED VLSI ARCHITECTURE FOR COMPUTATION OF FAST F...

引用

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

作者： YEH, HJ Ecole Normale Superieure de Lyon (South Korea)

ISBN: (纸本)0819412767

An on-chip VLSI architecture for computation of Fourier transforms is presented. It performs the arithmetic operations in a digit-level pipeline fashion. For this purpose, the implementation of arithmetic operators is based on on-line (i.e., digit-serial and most significant digit first) arithmetic, and the transforms are performed by a parallel-pipeline version of the Cooley- Tukey fast Fourier transform (FFT) algorithm.

关键词： Fourier transforms Very large scale integration Transform theory Binary data Computer architecture Computing systems Matrices Network architectures Digital signal processing signal processing

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Characterization of near-field scattering using a multiple weighted summed beamformer

Characterization of near-field scattering using a multiple w...

引用

conference on advanced signal processing algorithms, architectures and implementations xII

作者： Frazer, GJ Amin, MG Defence Science and Technology Organisation (Australia) Villanova Univ. (United States)

ISBN: (纸本)0819445584

The Sensor-Angle Distribution (SAD) is a recently introduced tool representing the power arriving at each sensor as a function of angle (or spatial frequency). It can be used to characterize near-field scatter environments. The SAD, as originally introduced, under-sampled the spatial correlation of the received signal (measured at each sensor) causing the SAD to be aliased for common source location cases. In this paper we indicate how this may be overcome. Additional results are provided showing that the SAD may be implemented as a multiple weighted subarray beamformer.

关键词： near-field sensor-angle distribution beamforming array processing

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WIGNER HIGHER-ORDER MOMENT SPECTRA - A REVIEW

WIGNER HIGHER-ORDER MOMENT SPECTRA - A REVIEW

引用

CONF ON advanced signal processing algorithms, architectures, AND implementations 3

作者： FONOLLOSA, JR NIKIAS, CL Univ. of Southern California (United States)

ISBN: (纸本)081940943X

A general overview of the definition and properties of the recently defined Wigner higher order moment spectra (WHOS) is given in this paper. It is shown how the properties satisfied by WHOS are the extension of the well known properties of the Wigner-Ville distribution to a higher-order domain. In addition, a general class formulation, the discrete implementation, a comparison with a cumulant-based definition, the reduced interference condition, and tone application also are discussed.

关键词： Time-frequency analysis Fourier transforms signal analyzers Interference (communication) signal detection signal to noise ratio signal attenuation Multidimensional signal processing Image processing signal processing

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ARITHMETIC UNIT BASED ON A HIGH-SPEED MULTIPLIER WITH A REDUNDANT BINARY ADDITION TREE

ARITHMETIC UNIT BASED ON A HIGH-SPEED MULTIPLIER WITH A REDU...

引用

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

作者： TAKAGI, N Kyoto Univ. (Japan)

An arithmetic unit based on a high-speed multiplier with a redundant binary addition tree is proposed. It is efficient for numerical computations with iteration of multiplications and addition/subtractions. A new mult... 详细信息

ISBN: (纸本)0819406945

关键词： Binary data signal processing Americium Digital signal processing Computer architecture Information science Laser induced breakdown spectroscopy Lithium Silicon Very large scale integration

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DISTRIBUTIONS CONCENTRATED ALONG THE INSTANTANEOUS FREQUENCY

DISTRIBUTIONS CONCENTRATED ALONG THE INSTANTANEOUS FREQUENCY

引用

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

作者： COHEN, L Hunter College/CUNY (United States)

We show that for purely frequency modulated signals one can always find a distribution which is infinitely concentrated along its instantaneous frequency. For signals that are both frequency and amplitude modulated we... 详细信息

ISBN: (纸本)0819404098

关键词： Frequency modulation Modulation Fermium Phase shift keying Amplitude modulation Algorithm development Phase modulation Time-frequency analysis signal analysis Tellurium

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signal arrival times

Signal arrival times

引用

conference on advanced signal processing algorithms architectures and implementations xIII

作者： Hughes, DH USAF Res Lab Ctr Integrated Transmiss & Exploitat Rome NY 13441 USA

ISBN: (纸本)0819450782

A femtosecond electromagnetic pulse propagating in a linear dispersive medium is analyzed in phase spaces of (space, wave number) and (time, frequency). First moment densities are computed as eigenvalues of differential operators acting on Hilbert ray representations of the pulse in relevant domains. These moment densities are used as metrics in the relevant phase spaces to measure the local mean values and their deviations in position and wavenumber, and in time and frequency. For example, arrival times of the pulse over its spectral content are computed as the mean arrival time at a particular frequency to within one half the local deviation at that frequency. These metrics on the pulse are compared to the relevant phase space Wigner distribution.

关键词： space-time signal analysis local moments Wigner distribution time-frequency dispersion wave propagation FDTD moment densities instantaneous frequency

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OVERVIEW OF SOME RECENT RESEARCH IN signal-processing FOR PERSONAL COMMUNICATION-NETWORKS

OVERVIEW OF SOME RECENT RESEARCH IN SIGNAL-PROCESSING FOR PE...

引用

CONF ON advanced signal processing algorithms, architectures, AND implementations 3

作者： MILSTEIN, LB Univ. of California/San Diego (United States)

ISBN: (纸本)081940943X

The use of wireless personal communication networks (PCN) to increase the capacity of cellular radio systems is a topic currently receiving much attention. In addition to the increase in capacity one achieves by going to a microcellular system, one can increase the spectral efficiency even further by allowing the PCN to overlay a frequency band which is already occupied with narrowband waveforms. Various signal processing techniques can be used advantageously in this regard, and such techniques are outlined below.

关键词： signal processing Digital filtering Receivers Linear filtering Microwave radiation Telecommunications Transmitters Interference (communication) RF communications Wireless communications

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A flexible arithmetic and logic unit for multimedia processing

A flexible arithmetic and logic unit for multimedia processi...

引用

conference on advanced signal processing algorithms architectures and implementations xIII

作者： Senthilvelan, M Schulte, MJ Univ Wisconsin Dept Elect & Comp Engn Madison WI 53706 USA

ISBN: (纸本)0819450782

Novel arithmetic units are needed to achieve the cost, performance, power, and functionality requirements of emerging multimedia systems. This paper presents the design and implementation of a 64-bit arithmetic and logic unit (ALU) for multimedia processing. The 64-bit ALU supports subword-parallel processing by allowing one 64-bit, two 32-bit, four 16-bit, or eight 8-bit operations to be performed in parallel. In addition to conventional ALU operations, the ALU also supports several operations for enhanced multimedia processing including parallel compare, parallel average, parallel minimum, parallel maximum, and parallel shift and add. To efficiently implement a variety of multimedia applications, the ALU supports saturating and wrap-around arithmetic operations on unsigned and two's complement operands. This paper compares the area and delay of the 64-bit multimedia ALU to those of a more conventional 64-bit ALU.

关键词： ALU adder saturating multimedia computer arithmetic DSP

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RELATIONSHIPS BETWEEN THE FOURIER-TRANSFORM AND THE WAVELET TRANSFORM

RELATIONSHIPS BETWEEN THE FOURIER-TRANSFORM AND THE WAVELET ...

引用

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

作者： RESNIKOFF, HL BURRUS, CS Aware Inc. (United States) Aware Inc. and Rice Univ. (United States)

ISBN: (纸本)0819404098

This paper derives the relationship between the coefficients of the Fourier expansion of a periodic signal and the coefficients of the wavelet expansion of the same signal. The formula derived shows how the Fourier concept of frequency and the wavelet concept of scale are related and how the wavelet coefficients display the information contained in the signal in a new way. The relationship also shows how the wavelet expansion can be used to approximately calculate the Fourier coefficients.

关键词： Wavelets Fourier transforms Wavelet transforms Computing systems Digital signal processing Mathematical modeling signal processing Systems modeling Feature extraction Mathematics

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EFFICIENT BEAM-BASED ADAPTIVE processing FOR PLANAR ARRAYS

EFFICIENT BEAM-BASED ADAPTIVE PROCESSING FOR PLANAR ARRAYS

引用

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

作者： KRATZER, SG Supercomputing Research Ctr. (United States)

ISBN: (纸本)0819404098

Beam-based adaptive processing is an economical way to achieve good interference rejection performance from an adaptive receiving array, at much less computational cost than full element-based methods. However, to exploit this potential for planar arrays it is necessary to identify, in real time, which beams must be retained for adaptive concellation. This paper analyzes the beam-selection problem and presents a computationally efficient algorithm that performs real-time beam selection.

关键词： signal processing signal to noise ratio Statistical analysis Algorithm development Beam analyzers Electroluminescence Cobalt Electronics Fourier transforms Phased arrays

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