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CISC, RISC AND DSP PROCESSORS IN REAL-TIME signal-processing AND CONTROL

MICROPROCESSORS AND MICROSYSTEMS 1995年第5期19卷 291-300页

作者： TOKHI, MO HOSSAIN, MA Department of Automatic Control and Systems Engineering The University of Sheffield PO Box 600 Mappin Street Sheffield S1 4DU UK

This paper presents an investigation into the performance evaluation of advanced complex instruction set computer (CISC) processors, reduced instruction set computer (RISC) processors and digital signal processing (DSP) devices in the real-time implementation of signal processing and control algorithms. The algorithms considered are of varying degree of regularity relative to one another. These include a fast Fourier transform algorithm, a second-order correlation algorithm, two adaptive filtering algorithms, a simulation algorithm of a flexible manipulator system and simulation, identification and active vibration control algorithms of a flexible beam system. The algorithms are implemented on an 80486DX2 CISC processor, an 80386DX CISC processor, a SPARC TMS390S10 RISC processor, a T805 RISC processor, an 80i860 RISC processor and a TMS320C40 DSP device. The hardware and software resources and capabilities of the processors and the characteristics of the algorithms are discussed to provide a matching between the algorithms and the architectures. Finally, a comparison of the results of the implementations, on the basis of real-time computation performance, is made and discussed.

关键词： DIGITAL signal processing COMPLEX INSTRUCTION SET COMPUTER REDUCED INSTRUCTION SET COMPUTER

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SYSTEMATIC CONSTRUCTION OF ORDER-RECURSIVE LS ESTIMATION algorithms WITH ELEMENTARY ORTHOGONAL TRANSFORMATIONS 4

SYSTEMATIC CONSTRUCTION OF ORDER-RECURSIVE LS ESTIMATION ALG...

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

作者： LING, F Motorola (United States)

ISBN: (纸本)0819412767

This paper demonstrates that order-recursive least squares (ORLS) algorithms based on orthogonal transformations and hyperbolic transformations can be systematically constructed in two steps. The first step is to determine the structure of the ORLS algorithm according to the property of the data vector in the LS estimation and the requirements to the output. The second step is to determine the proper implementation of building blocks of the ORLS structure using orthogonal or hyperbolic transformations. The canonical ORLS structure and some possible orthogonal/hyperbolic implementations of their building blocks are presented. It is also shown that some of the orthogonal transformations are only applicable to certain types of ORLS structures and not to others.

关键词： Algorithm development Error analysis Detection and tracking algorithms Digital signal processing Expectation maximization algorithms Statistical analysis Factor analysis Magnesium Roads Telecommunications

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Scale-cumulant domain deconvolution of sensor array signals

Scale-cumulant domain deconvolution of sensor array signals

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

作者： Izzetolu, M Akgül, T Drexel Univ Dept Elect & Comp Engn Philadelphia PA 19104 USA

ISBN: (纸本)0819437611

In this paper we combine two recently developed multi-scale deconvolution algorithms, known as the scale-time domain method and the sum-of-cumulants domain method. We formulate the deconvolution problem in the scale-cumulant domain using the Scale Transform (ST) and show that the procedure is simpler when the unknown source signal is non-minimum phase and robust if Gaussian noise exists.

关键词： Sensors Deconvolution Electronic filtering Interference (communication) Algorithm development Reflectors signal processing Convolution Detection theory Image processing

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NONLINEAR signal-processing USING RADIAL BASIS FUNCTIONS

NONLINEAR SIGNAL-PROCESSING USING RADIAL BASIS FUNCTIONS

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

作者： SHEPHERD, TJ BROOMHEAD, DS Royal Signals and Radar Establishment (United Kingdom) Royal Signals and Radar Establ (United Kingdom)

ISBN: (纸本)0819404098

A procedure for multidimensional nonlinear modeling and interpolation is described which employs the method of radial basis function analysis. A systolic array for efficiently performing the associated computation for both the modeling and interpolation modes recursively in time is also described. Conditions are given for the further improvement of efficiency in the algorithm when the input data constitute a time series, and an associated processing structure is outlined.

关键词： Nonlinear optics signal processing

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Wave propagation with dispersion and damping

Wave propagation with dispersion and damping

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

作者： Cohen, L CUNY New York NY 10021 USA

ISBN: (纸本)0819454974

We discuss pulse propagation in a dispersive medium with damping. We derive an explicit expression for the center of mass motion and show that when there is damping the center of mass does not travel with constant velocity, as is the case when there is no damping. We also derive an explicit relation connecting pulse propagation in the damped case with that of the undamped case. This allows the transformation from one case to the other. A number of exactly solvable examples are given to illustrate the equations derived.

关键词： Wave propagation Dispersion Fourier transforms Differential equations signal attenuation 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...

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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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ERROR PROPAGATION OF SOME FAST RLS algorithms 4

ERROR PROPAGATION OF SOME FAST RLS ALGORITHMS

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

作者： QIAO, SZ McMaster Univ. (Canada)

ISBN: (纸本)0819412767

The fast recursive least squares (RLS) algorithms have wide applications in signal processing and control. They are computationally efficient. Thus their stability is of major concern. In this paper, we investigate the error propagation and stability of some typical fast RLS algorithms. Through a random example, we show that a typical conventional fast RLS algorithm is weakly unstable in computing both the residuals and the gain vectors and a QR based algorithm is expected to be weakly stable in computing the residuals but weakly unstable in computing the gain vectors. We propose an error correction scheme for computing the gain vectors.

关键词： Algorithm development Condition numbers MATLAB Lead Process control signal processing Analytical research

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ALGORITHMIC ENGINEERING - A SIMPLIFIED DERIVATION OF THE ORTHOGONAL LEAST-SQUARES LATTICE

ALGORITHMIC ENGINEERING - A SIMPLIFIED DERIVATION OF THE ORT...

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

作者： PROUDLER, IK MCWHIRTER, JG Royal Signals and Radar Establishment (United Kingdom)

ISBN: (纸本)081940943X

Algorithmic engineering provides a rigorous framework for describing and manipulating the type of building blocks commonly used to define parallel algorithms and architectures for digital signal processing. So far, the concept has only been illustrated by means of some relatively simple examples. These relate to the use of QR decomposition by Givens rotations for the purposes of adaptive filtering and beamforming. In this paper we present a much more challenging example whereby the techniques of algorithmic engineering are used to derive the QRD-based lattice algorithm for multi-channel least squares linear prediction. The elegant simplicity of this derivation, which comprises a sequence of straightforward diagrammatic manipulations, serves to demonstrate the potential power of algorithmic engineering as a formal design technique.

关键词： signal processing Neptunium Algorithm development Array processing Digital signal processing Linear filtering Digital filtering Computer architecture Parallel processing Parallel computing

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FPOP: Field Programmable On-line oPerators

FPOP: Field Programmable On-line oPerators

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

作者： Tisserand, A Marchal, P Piguet, C CSEM Neuchatel Switzerland

ISBN: (纸本)0819432938

This paper describes a new digital reprogrammable architecture called Field Programmable On-line oPerators (FPOP). This architecture is a kind of FPGA dedicated to very low-power implementations of numerical algorithms in signal processing or digital control applications for embedded or portable systems. FPOP is based on a reprogrammable array of on-line arithmetic operators. On-line arithmetic is a digit-serial arithmetic with most significant digits first using a redundant number system. Because of the small size of the digit-serial operators and the small number of communication wires between the operators, single chip implementation of complex numerical algorithms can be achieved using on-line arithmetic. Furthermore, the digit-level pipeline and the small size of the arithmetic operators lead to high-performance parallel computations. Compared to a standard FPGA, the basic cells in FPOP are arithmetic operators such as adders, subtracters, multipliers, dividers, square-rooters, sine or cosine operators. This granularity level allows very efficient power x delay implementations of most algorithms used in digital control and signal processing. The circuit also integrates some analog to digital and digital to analog converters.

关键词： FPGA reconfigurable logic on-line arithmetic digital control signal processing

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NETWORKS FOR MODELING AND signal-processing

NETWORKS FOR MODELING AND SIGNAL-PROCESSING

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

作者： YOU, YL XU, WY GORYN, D KAVEH, M Univ. of Minnesota (United States) Siemens AG (Germany)

ISBN: (纸本)081940943X

This paper presents modifications of the continuous Hopfield and Hartline-Ratliff networks for use in signal restoration and parameter estimation. The particular parameter estimation problem of interest is concerned with the estimation of the directions of arrival of an unknown number of plane waves in unknown noise. Restoration of linearly distorted noisy images is considered as an example of regularized restoration of a signal with known dynamic range.

关键词： Neurons signal to noise ratio Neural networks Image restoration signal processing Sensors Binary data Computer programming Control systems Phased arrays

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