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IEEE Transactions on Signal Processing

Issue 11 • Date Nov 1993

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Displaying Results 1 - 19 of 19
  • Estimation of linear parametric models using inverse filter criteria and higher order statistics

    Publication Year: 1993, Page(s):3196 - 3199
    Cited by:  Papers (28)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    Considers the problem of estimating the parameters of a stable, scalar ARMA (p, q) signal model (causal or noncausal, minimum phase or mixed phase) driven by an i.i.d. non-Gaussian sequence. The driving noise sequence is not observed. The Wiggins-Donoho (1978, 1991) class of inverse filter criteria for estimation of model parameters are analyzed and extended. These criteria have been considered in... View full abstract»

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  • Phase equalization of one and two-dimensional recursive filers

    Publication Year: 1993, Page(s):3193 - 3196
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    An effective optimization algorithm is proposed to design multidimensional recursive phase equalizers. The optimization algorithm uses the modified version of the Rosenbrock (1960) pattern search method to minimize the maximum group delay ripple. This numerical method eliminates the increased complexity that derivative methods show when multiple variables are to be found. The criteria used to guar... View full abstract»

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  • Block time and frequency domain modified covariance algorithms for spectral analysis

    Publication Year: 1993, Page(s):3138 - 3152
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1052 KB)

    Block modified covariance algorithms are proposed for autoregressive parametric spectral estimation. First, the authors develop the block modified covariance algorithm (BMCA) which can be implemented either in the time or in the frequency domain-with the latter being more efficient in high-order cases. A block algorithm is also developed for the energy weighted combined forward and backward predic... View full abstract»

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  • On vector transformation

    Publication Year: 1993, Page(s):3114 - 3126
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (628 KB)

    It has been shown that a vector transform is a good tool for digital filtering and image coding. This paper addresses some of the issues related to vector transforms. First, a fundamental difference between vector transforms and conventional transforms is examined. Second, two approaches to constructing vector transforms are discussed. Finally, an application of vector transformation to an efficie... View full abstract»

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  • Practical issues concerning the family of multichannel MV spectra for recovery of point spectrum

    Publication Year: 1993, Page(s):3177 - 3182
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (516 KB)

    The paper addresses some of the practical issues associated with the multichannel point spectrum identification scheme of Foias et al. (1990). These include a convergence test for detecting signal frequencies and identifying the associated spectral matrices. An in-depth example is presented View full abstract»

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  • Tracking of unknown nonstationary chirp signals using unsupervised clustering in the Wigner distribution space

    Publication Year: 1993, Page(s):3085 - 3101
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1292 KB)

    This paper is concerned with the problems of (1) detecting the presence of one or more FM chirp signals embedded in noise, and (2) tracking or estimating the unknown, time-varying instantaneous frequency of each chirp component. No prior knowledge is assumed about the number of chirp signals present, the parameters of each chirp, or how the parameters change with time. A detection/estimation algor... View full abstract»

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  • Mixed-radix discrete cosine transform

    Publication Year: 1993, Page(s):3157 - 3161
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (368 KB)

    Presents two new fast discrete cosine transform computation algorithms: a radix-3 and a radix-6 algorithm. These two new algorithms are superior to the conventional radix-3 algorithm as they (i) require less computational complexity in terms of the number of multiplications per point, (ii) provide a wider choice of the sequence length for which the DCT can be realized and, (iii) support the prime ... View full abstract»

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  • On the constrained MUSIC technique

    Publication Year: 1993, Page(s):3190 - 3193
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    A constrained MUSIC technique, recently proposed for bearing estimation, is shown to be a version of the beam-space MUSIC. This observation places the constrained MUSIC in a class of bearing estimators whose statistical performance is well understood View full abstract»

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  • A class of statistical and spectral distance measures based on Bose-Einstein statistics

    Publication Year: 1993, Page(s):3171 - 3174
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    A class of statistical distance measures and their spectral counterparts are presented. They have strong physical foundations since they are based on the combinatorial law leading to Bose-Einstein statistics in statistical physics. It is shown that these distance measures are very closely related to the recently introduced Jensen-Shannon divergence measure. The Kullback-Leibler information (1951) ... View full abstract»

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  • A fast recursive algorithm for the maximum likelihood estimation of the parameters of a periodic signal

    Publication Year: 1993, Page(s):3199 - 3202
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (308 KB)

    Describes a new recursive algorithm for the estimation of the parameters of a periodic signal in additive Gaussian white noise. These parameters are the period, and the complex amplitudes of the harmonics present. The proposed algorithm is based on recursive maximum likelihood (ML) algorithms for incomplete data as described by Titterington (1985) and others. These algorithms are of complexity O(N... View full abstract»

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  • An objective performance measure in multiresolution signal decomposition

    Publication Year: 1993, Page(s):3153 - 3157
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    Presents an analysis of band energies and evaluates the effects of aliasing in perfect reconstruction (PR) multirate systems. An objective performance measure called nonaliasing energy ratio (NER) is defined. The merit of the new measure is emphasized with performance comparisons of popular block transforms and 2-band PR-QMF based hierarchical filter banks. It is shown that the new measure complem... View full abstract»

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  • Two-dimensional Prony modeling and parameter estimation

    Publication Year: 1993, Page(s):3127 - 3137
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (744 KB)

    A new method for estimating the two-dimensional (2D) exponential modes and amplitude coefficients in a Prony model is presented. This method involves two parts, each utilizing a 1D singular value decomposition-based technique, and is capable of locating frequencies anywhere in the 2D frequency plane. Simulations are shown which demonstrate the performance of the algorithm View full abstract»

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  • Principal decomposition of time-frequency distributions

    Publication Year: 1993, Page(s):3182 - 3186
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (448 KB)

    The authors present a novel time-frequency analysis technique which uses principal components analysis to map any given time-frequency distribution (TFD) of a signal into a set of three 1-D principal decomposition functions. These three functions may then be considered to be `separable' components of a time-frequency function which they refer to as the principal approximation function for the orig... View full abstract»

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  • Realizable lower bounds for time delay estimation

    Publication Year: 1993, Page(s):3102 - 3113
    Cited by:  Papers (33)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (952 KB)

    The accuracy of time delay estimates obtainable in active localization systems is studied, focusing on the effect of ambiguities in the time delay estimates. Such ambiguities occur when the transmitted signal has small relative bandwidth. Then, for signal to noise ratios below a certain threshold, the commonly used Cramer-Rao lower bound is not realizable. The study concentrates on the region of i... View full abstract»

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  • Analysis of linear prediction by matrix approximation

    Publication Year: 1993, Page(s):3174 - 3177
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    The authors present a new method of analysis of the effects of data perturbations on the estimates of signal parameters which are obtained by the method of linear prediction. The variances of signal-parameter obtained from linear prediction methods are computed. Although the results appear to have wide applicability, for simplicity the authors restrict their examples to signals which are linear co... View full abstract»

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  • Multiple frequencies and AR parameters estimation from one bit quantized signal via the EM algorithm

    Publication Year: 1993, Page(s):3202 - 3206
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    The authors present a novel algorithm which is used to estimate the coefficients of q AR processes from a coarsely quantized signal. The input signal to the quantizer is the superposition of q AR processes and noise. In a related problem a modified version of the above algorithm is used to estimate the frequencies of coarsely quantized data obtained from q sinusoids embedded in noise. The proposed... View full abstract»

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  • The feedback adaptive line enhancer: a constrained IIR adaptive filter

    Publication Year: 1993, Page(s):3161 - 3166
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    A new adaptive line enhancer (ALE) structure, called the Feedback ALE (FALE), is presented and is shown to be a constrained W adaptive filter. Extensive simulations show that the FALE gives a higher sine-to-broadband ratio (SBR) gain and smaller sine estimation error than does an equal-order ALE; conversely, the order of the FALE can be much low er than the ALE to achieve equivalent performance View full abstract»

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  • On the generalized likelihood ratio test for a class of nonlinear detection problems

    Publication Year: 1993, Page(s):3186 - 3190
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    The authors examine the generalized likelihood ratio test (GLRT) for a certain class of detection problems. This class is characterized by a model which is linear in some parameters and nonlinear in others. They show that the classical asymptotic analysis of the GLRT fails for this class, and demonstrate the existence of ill-behaved cases in this class. They then propose a modification of the GLRT... View full abstract»

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  • A robust adaptive array based on signal subspace approach

    Publication Year: 1993, Page(s):3166 - 3171
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (480 KB)

    In this note, we propose a signal subspace approach that improves the performance of a beam steered adaptive array in the presence of steering errors due to look-direction error (LDE) and/or random steering error (RSE). In the method, the degrees of freedom (DOF) are reduced so as not to cancel the desired signal while preserving the optimal characteristic of the array, and thus the weights of the... View full abstract»

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Aims & Scope

IEEE Transactions on Signal Processing covers novel theory, algorithms, performance analyses and applications of techniques for the processing, understanding, learning, retrieval, mining, and extraction of information from signals

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Meet Our Editors

Editor-in-Chief
Sergios Theodoridis
University of Athens