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检索条件"主题词=Signal processing algorithms"

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Combining Algebraic and Domain Testing to Design Adequate Test Cases for signal processing algorithms

Combining Algebraic and Domain Testing to Design Adequate Te...

引用

International Conference on Software Testing, Verification, and Validation, ICST

作者： Timo Huuhtanen Juha Itkonen Casper Lassenius Dept. of Comput. Sci. Aalto Univ. Helsinki Helsinki Finland

signal processing software is characterized by a heavy emphasis on arithmetic calculations and the lack of complicated control structures, placing specific constraints on which testing techniques are applicable and how signal processing software can be efficiently tested. In this paper, we analyze the unique characteristics of signal processing software from the testing viewpoint and propose applied techniques for tackling the verification challenges of such software. We propose a testing method for the signal processing context and provide examples of its application to an FIR and a second order IIR filter. This method extends the applicability of algebraic testing and domain testing methods to signal processing software. The developed method applies to linear systems and can be further extended to take nonlinearities in the tested system into account.

关键词： Software signal processing algorithms Finite impulse response filters Software testing Linear systems

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Accelerating biomedical signal processing algorithms with parallel programming on graphic processor units

Accelerating biomedical signal processing algorithms with pa...

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IEEE EMBS International Conference on Information Technology Applications in Biomedicine (ITAB)

作者： Evdokimos I. Konstantinidis Christos A. Frantzidis Lazaros Tzimkas Costas Pappas Panagiotis D. Bamidis Lab of Medical Informatics Medical School Aristotle University of Thessaloniki Greece Lab of Medical Informatics Medical School Aristotle University of Thessaloniki Thessaloniki Greece

This paper investigates the benefits derived by adopting the use of Graphics processing Unit (GPU) parallel programming in the field of biomedical signal processing. The differences in execution time when computing the Correlation Dimension (CD) of multivariate neurophysiological recordings and the Skin Conductance Level (SCL) are reported by comparing several common programming environments. Moreover, as indicated in this study, the combination of parallel programming with special design techniques dealing with memory management issues such as data transfer between device memory and GPU may further accelerate the processing speed. So, the minimization achieved in the time execution by means of proper parallel architecture design may reach a factor of 29 in comparison with pure C language. Therefore, the role of parallel GPU programming environment may be beneficial for numerous biomedical applications within the sphere of biosignal processing.

关键词： Acceleration Biomedical signal processing signal processing algorithms Parallel programming Graphics Programming environments Memory management Biomedical computing CD recording Skin

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Tracking properties of adaptive signal processing algorithms

Tracking properties of adaptive signal processing algorithms

引用

International Conference on Acoustics, Speech, and signal processing (ICASSP)

作者： D. Farden K. Sayood Department of Electrical Engineering University of Rochester Rochester NY USA Department of Electrical Engineering Texas A and M University College Station TX USA

Adaptive signal processing algorithms are often used in order to "track" an unknown time-varying parameter vector. Such algorithms are typically some form of stochastic gradient-descent algorithm. The Widrow LMS algorithm is apparently the most frequently used. This work develops an upper bound on the norm-squared error between the parameter vector being tracked and the value obtained by the algorithm. The upper bound illustrates the relationship between the algorithm step-size and the maximum rate of variation in the parameter vector. Finally, some simple covariance decay-rate conditions are imposed to obtain a bound on the mean square error.

关键词： Adaptive signal processing signal processing algorithms Upper bound Symmetric matrices Stochastic processes Mean square error methods Training data Steady-state Eigenvalues and eigenfunctions

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Development of signal processing algorithms for high resolution airborne millimeter wave FMCW SAR

Development of signal processing algorithms for high resolut...

引用

IEEE International Conference on Radar

作者： A. Meta P. Hoogeboom IRCTR Delft University of Technnology Netherlands TNO Den Haag Netherlands

For airborne Earth observation applications, there is a special interest in lightweight, cost effective, imaging sensors of high resolution. The combination of frequency modulated continuous wave (FMCW) technology and synthetic aperture radar (SAR) techniques can lead to such a sensor. In this paper, a developed algorithm for SAR imaging that takes into account the special characteristics of FMCW signals is presented. Constrains for the validity of the stop and go approximation are shown. A demonstrator system has been built at Delft University of Technology and some results from the last airborne campaign are presented.

关键词： signal processing algorithms signal resolution Millimeter wave technology Sensor phenomena and characterization Millimeter wave radar Earth Costs High-resolution imaging Image sensors Image resolution

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Analysis of relative permits depending on signal-noise ratio at the use of optimal on minimum error average square in signal processing algorithms

Analysis of relative permits depending on signal-noise ratio...

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International Crimean Conference on Microwave & Telecommunication Technology

作者： S. V. Korolyov ELSOV Research & production center 4-th Zapadny passage Zelenograd Moscow 124460 Russia

Presented in this paper is comparative analysis regarding the resolution of CO and MSK algorithms of radar mapping at the side looking. The analysis displays that at q ges 0 MSK algorithm has better resolution than SF... 详细信息

关键词： signal analysis Algorithm design and analysis signal processing signal processing algorithms Principal component analysis Organizing IEEE catalog

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MAT2DSP-A tool for evaluating implementation complexity of signal processing algorithms

MAT2DSP-A tool for evaluating implementation complexity of s...

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International Conference on Acoustics, Speech, and signal processing (ICASSP)

作者： B. Friedlander Department Electrical & Computer Engineering University of California Davis CA USA

MAT2DSP is a MATLAB toolbox, currently under development, whose function is to estimate the implementation requirements of algorithms specified in the form of a MATLAB program. This toolbox is aimed at providing researchers developing advanced signal and image processing algorithms, a quick and convenient way of estimating what would be needed to implement their algorithm on a specified processor; MAT2DSP analyzes the user program and generates reports on its computational requirements.

关键词： signal processing algorithms MATLAB Costs Algorithm design and analysis signal processing Image processing Process design Mathematical analysis Software packages Software algorithms

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Quantitative signal processing algorithms for low cost methane and carbon monoxide detectors

Quantitative signal processing algorithms for low cost metha...

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IEEE Instrumentation and Measurement Technology Conference

作者： T. Sundic S. Marco A. Pardo A. Ortega M. Ortiz J. Samitier Departament d'Electrònica Instrumentation and Communication Laboratory Universitat de Barcelona Barcelona Spain Universitat de Barcelona Barcelona Catalunya ES

Natural gas and carbon monoxide domestic detectors available in the market present serious deficiencies in terms of selectivity. Their problems result in a high percentage of false alarms. A possible solution of this problem is to improve the performance by means of signal processing. The authors present the work carried out towards the improvement of signal processing in quantitative analysis. in this paper we present the results obtain by some quantitative algorithms together with their application examples focused in the selective detection of methane and carbon.

关键词： signal processing algorithms Costs Gas detectors Sensor arrays Thin film sensors Testing Laboratories Intelligent sensors Gases Temperature sensors

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The Use of signal processing algorithms in EMC

The Use of Signal Processing Algorithms in EMC

引用

EMC'98 ROMA International Symposium on Electromagnetic Compatibility

作者： Bruno Audone Fulvio Bresciani Alenia Spazio Torino Italy

ISBN: (纸本)9798331500016

Statistical signal processing is applied to estimate the geometrical and electrical characteristics of narrowband emissive sources. The key issue of the approach is based upon the use of MUSIC algorithm, which is largely used in array processing in far field conditions, to estimate the positions and the characteristics of emissive sources operating in near field conditions. The processing is divided in two phases : detection aimed to define the type of source and the estimation aimed to pinpoint the actual geometrical position of the source.

关键词： Vectors Sensor arrays Multiple signal classification Sensors Estimation Electromagnetic compatibility Transmission line matrix methods signal processing algorithms Open area test sites Mathematical models

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Doubly pipelined Cordic array for digital signal processing algorithms

Doubly pipelined Cordic array for digital signal processing ...

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International Conference on Acoustics, Speech, and signal processing (ICASSP)

作者： T. Sung Y. Hu H. Yu Electrical Engineering Department National Taiwan University Taipei Taiwan Electrical Engineering Department Southern Methodist University Dallas TX USA

In this paper, we present a doubly pipelined VLSI Cordic array processor for digital signal processing computations. The basic notion of doubly pipelined CORDIC computation will be introduced first. Then, some potential applications to digital signal processing problems will be discussed. Specifically, we shall demonstrate how a doubly pipelined CORDIC processor array can be applied to compute discrete Fourier transform and Fast Fourier transform, to implement Lattice filters, to solve Toeplitz systems as well as matrix QR factorizations. It is shown that by adopting a secondary pipelining, about one third hardware can be saved, and sometimes the throughput of the entire CORDIC processor array may be doubled.

关键词： Digital signal processing signal processing algorithms Very large scale integration Discrete Fourier transforms Fast Fourier transforms Lattices Filters Pipeline processing Hardware Throughput

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A Comparison of Real-Time Performance of signal processing algorithms for Minimum Latency Detection of Hypovolemic States

A Comparison of Real-Time Performance of Signal Processing A...

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Annual International Conference of the IEEE Engineering in Medicine and Biology Society (EMBC)

作者： Emil Jovanov Paul Cox J. Philip Saul Jose Salinas Kathy L. Ryan Victor A. Convertino Electrical and Computer Engineering University of Alabama Huntsville Huntsville AL USA PERL Research LLC Huntsville Alabama U.S.A. MUSC Childrens Hospital Charleston SC USA U.S. Army Institute of Surgical Research Fort Sam Houston TX USA

algorithms for real-time ambulatory monitoring of physiological signals often run on platforms which have very limited processing power and memory. Therefore, in addition to functionality, it is necessary to carefully consider real-time performance requirements. This is particularly important for physiological monitoring of life threatening conditions such as hemorrhage. In this paper we present a comparison of several algorithms as candidates for implementation on a prehospital ambulatory monitor of hypovolemic states. The algorithms were tested on data from lower body negative pressure (LBNP) experiments that were used to simulate hypovolemic states. We also present a promising real-time wavelet algorithm for heart rate variability (HRV) processing in prehospital ambulatory monitoring applications

关键词： signal processing algorithms Delay Biomedical monitoring Heart rate variability Hemorrhaging Patient monitoring Computerized monitoring Blood Biological system modeling Humans

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