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  • Articles  (69,041)
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  • 2020-2024
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  • 1
    Electronic Resource
    Electronic Resource
    Preface (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 153-154 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01189871
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  • 2
    Electronic Resource
    Electronic Resource
    Efficient derivation of the optimal mean-square binary morphological filter from the conditional expectation via a switching algorithm for discrete power-set lattice (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 409-430 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract Once designed, implementation of an optimal mean-square binary morphological filter is extremely fast, especially when the erosions are implemented on a suitable parallel processor. On the other hand, optimal filter design involes a computationally burdensome search procedure that can, in practice, be intractable. The present paper provides an algorithm for filter design that is based on the relationship between the optimal morphological filter and the conditional expectation. The algorithm proceeds by changing the conditional expectation into a morphological filter while at the same time increasing the mean-square error by a minimal amount. It does so by switching observations between the 1-set and the 0-set of the conditional expectation. The switching algorithm is extremely efficient in many noise environments, and therefore provides a filter design that can be useful for online structuring-element updating. Owing to the relationship between stack and morphological filters, the algorithm is at once useful for finding optimal binary stack filters.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01223318
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  • 3
    Electronic Resource
    Electronic Resource
    Feedback neural networks: new characteristics and a generalization (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 263-278 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract New characteristics of feedback neural networks are studied. We discuss in detail the question of updating of neurons given incomplete information about the state of the neural network. We show how the mechanism of self-indexing for such updating provides better results than assigning ‘don't know’ values to the missing parts of the state vector. Issues related to the choice of the neural model for a feedback network are also considered. Properties of a new complex valued neuron model that generalizes McCulloch-Pitts neurons are examined.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01189877
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  • 4
    Electronic Resource
    Electronic Resource
    Chained eigenstructure assignment for strongly controllable singular systems (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 391-407 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper deals with chained eigenstructure assignment for strongly controllable singular systems of the form Êx (t)=Â x(t)+B u(t) with state feedback control of the formu(t)=Kx(t)+w(t). The development of our method depends crucially on the properties of standard form singular systems. The closed-loop system will satisfy the following requirements: regularity, impulse-free response and rankÊ arbitrary eigenvalues assignment. This parametric characterization conveniently organizes the nonunique gain matrixK to modify the dynamic response of the systems. The result can be used for discrete-time descriptor systems, in which a zero-value eigenvalue may well be a desired closed-loop eigenvalue. One illustrative example is included.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01223317
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  • 5
    Electronic Resource
    Electronic Resource
    Statistical performance analysis of a fast stochastic gradient for constrained adaptive time delay estimation (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 453-464 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract An efficient bi-state stochastic gradient is proposed for spontaneous constrained time delay estimation. The quantized stochastic gradient is an approximation of the polarity of the instantaneous delay estimation error. It is adjusted in such a way that it has a much higher probability to move in the correct direction at each iteration so as to enable a speed-up in the delay estimate to converge to global minimum in steady state. The performance of the delay estimator is evaluated statistically and an analytical solution for its convergence behavior is established. It is demonstrated that the proposed algorithm has at least a two-fold improvement in convergence speed when compared with the conventional approach, and this is verified by extensive simulation results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01223321
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  • 6
    Electronic Resource
    Electronic Resource
    Fast algorithms for erasures and error correction in redundant residue number systems (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 503-531 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract In this work, we extend the coding theory approach to error control in redundant residue number systems (RRNS). The concept of erasure correction capability in RRNS is introduced. We derive the relationship between the minimum distance and the error detection and error/erasure correction capability. New computationally efficient algorithms are derived for simultaneously correcting single errors and multiple erasures and detecting multiple errors. These algorithms reduce the computational complexity of the previously known algorithms by at least an order of magnitude. Another attractive feature of the algorithms is that all the arithmetic operations are modulo operations. Consequently, the need to process large valued integers is avoided.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01188092
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  • 7
    Electronic Resource
    Electronic Resource
    On real and complex normalizations (1993)
    Springer
    Circuits, systems and signal processing 12 (1993), S. 579-587 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper presents a general expression relating the complex-normalized scattering matrix of ann-port network to that of its augmentedn-port network normalizing to then 1 −Ω resistances, where the Darlington equivalent network may be either reciprocal or nonreciprocal.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01188096
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  • 8
    Electronic Resource
    Electronic Resource
    Modified Wigner bispectrum and its generalizations (1997)
    Springer
    Circuits, systems and signal processing 16 (1997), S. 27-40 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The Wigner bispectrum of multicomponent signals is studied, and its modified and reduced forms are introduced. A generalization of the presented forms to the Wigner higher-order spectra (WHOS), in the case of multicomponent signals, is provided. From our previous work it is known that cross terms removal (reduction) is possible for odd-order spectra with equal numbers of conjugated and nonconjugated terms. Here, we extend the analysis to even-order spectra. The theory is illustrated by examples.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01183173
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  • 9
    Electronic Resource
    Electronic Resource
    On identifiability and information-regularity in parametrized normal distributions (1997)
    Springer
    Circuits, systems and signal processing 16 (1997), S. 83-89 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract We describe methods to establish identifiability and information-regularity of parameters in normal distributions. Parameters are considered identifiable when they are determined uniquely by the probability distribution and they are information-regular when their Fisher information matrix is full rank. In normal distributions, information-regularity implies local identifiability, but the converse is not always true. Using the theory of holomorphic mappings, we show when the converse is true, allowing information-regularity to be established without having to explicitly compute the information matrix. Some examples are given.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01183177
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  • 10
    Electronic Resource
    Electronic Resource
    Two-dimensional model-based power spectrum estimation for nonextendible correlation bisequences (1997)
    Springer
    Circuits, systems and signal processing 16 (1997), S. 141-163 
    Details
    ISSN: 1531-5878
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract The extendibility of estimated correlation bisequences from an available sampled data array is described in terms of the generating functions of associated block Toeplitz with Toeplitz block (BTTB) matrices. The periodogram-based correlation bisequences are shown to be extendible. It is shown that the method of resultants and subresultants is convenient for generating the nonlinear constraints in the optimization problem which is solved iteratively for power spectrum estimation. A nontrivial example illustrates the concepts developed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01183272
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