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Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on

April 30 1995-May 3 1995

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  • A unified approach to split structure adaptive filtering

    Publication Year: 1995, Page(s):1604 - 1607 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (397 KB)

    In this paper, a pragmatic approach to continuously split up an adaptive transversal filter is developed. It is shown that any M=2 L length adaptive filter can be decomposed into M parallel single-parameter sub-sections by an L-step splitting operation. The sub-sections can then be adapted separately and the convergence behaviour of the overall system is greatly improved. The proposed a... View full abstract»

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  • Authors index

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (429 KB)
    Freely Available from IEEE
  • 1995 IEEE International Symposium on Circuits and Systems

    Publication Year: 1995
    Request permission for commercial reuse | PDF file iconPDF (2949 KB)
    Freely Available from IEEE
  • Roundoff noise analysis of state-space digital filters implemented on floating-point digital signal processors

    Publication Year: 1995, Page(s):2023 - 2026 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (252 KB)

    An expression is obtained for the floating-point roundoff noise variance at the output of a general Nth-order state-space digital filter. This expression is then simplified for a filter implemented on a floating-point digital signal processor. Since these processors carry extended precision within registers, it is found that the floating-point roundoff noise gain is identical to the fixed-point ro... View full abstract»

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  • A new approach for the selection of test points for fault diagnosis

    Publication Year: 1995, Page(s):2019 - 2022 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (320 KB)

    A new criterion and an efficient algorithm for the selection of test points in multifrequency fault diagnosis of linear circuits are presented. The proposed criterion exploits the biquadratic nature of the response in terms of circuit parameters instead of the common use of first order sensitivities. Accordingly it is capable of handling catastrophic faults. Employing the proposed criterion, an ef... View full abstract»

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  • A BDD based algorithm for detecting difficult faults

    Publication Year: 1995, Page(s):2015 - 2018 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (360 KB)

    The aim of this paper is the presentation of a new methodology for fast test pattern generation for difficult faults. A BDD-based algorithm is applied as back-end of a standard ATPG (e.g. SOCRATES, FAN, PODEM) thus providing a solution to their inefficiency in difficult faults analysis. Experimental results show the effectiveness of the proposed approach on a number of benchmark circuits View full abstract»

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  • On the comparison of optimum least-squares and computationally efficient DFT-based adaptive block filters

    Publication Year: 1995, Page(s):1612 - 1615 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (344 KB)

    In this paper, we discuss a general frequency-domain adaptive algorithm, which can be implemented very efficiently, the so-called partitioned frequency-domain least-mean-square (PFLMS) algorithm. In comparing this PFLMS algorithm with the optimum block recursive least-squares (BRLS) algorithm, we consider its tracking behaviour, i.e., the ability to track changes of the unknown plant. We discuss t... View full abstract»

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  • Data-path testability analysis based on BDDs

    Publication Year: 1995, Page(s):2012 - 2014, 2014a vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (432 KB)

    Optimal application of Design for Testability techniques extends on an efficient testability analysis. Circuit complexity does not allow traditional testability analysis approach to perform efficiently. Therefore an higher abstraction level must be considered. This paper presents a methodology for controllability and observability verification at a functional level, starting from a VHDL descriptio... View full abstract»

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  • A study on introduction of PSD model for field merged signal and its analysis

    Publication Year: 1995, Page(s):1944 - 1947 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (312 KB)

    This paper describes a theoretical model of the power spectrum density (PSD) for a field-merged frame signal, and compares the efficiency between the field based coding, and frame-based coding that uses the field-merged signal. Recently, for the coding of interlace-scanned television signals, the field-merged signal is also used as an input signal to spatial coding process. However, the nature of ... View full abstract»

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  • A new frequency-domain LMS adaptive filter with reduced-sized FFT's

    Publication Year: 1995, Page(s):1608 - 1611 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (248 KB)

    This paper proposes a new type of frequency-domain LMS adaptive filter incorporating the FFT. In comparison with conventional FFT-based adaptive filters, the proposed scheme requires much smaller-sized FFT's in carrying out a system identification, so that it is more suitable for LSI implementations. The convergence proof and steady-state analysis with regard to a mean square error are given. In o... View full abstract»

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  • Collective test generation and test set compaction

    Publication Year: 1995, Page(s):2008 - 2011 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (428 KB)

    We present here a scheme of collective test pattern generation (CTPG) in which all tests for each fault in a network are generated as a by-product of the minimization process. This is done efficiently with the use of Binary Decision Diagrams (BDDs), known to provide compact representation and fast algorithms. The test patterns are obtained concurrently with the observability don't care sets throug... View full abstract»

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  • EAMUSE: an extended algorithm for multiple sources extraction

    Publication Year: 1995, Page(s):2269 - 2272 vol.3
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    This paper addresses the problem of multiple source signals separation in noise. As contrasted to the reported studies in which white noise in different sensors with same noise covariance was assumed, the additive noise sensors considered in this paper have different noise covariance. An extended algorithm for multiple sources extraction (EAMUSE) is proposed. The effectiveness of our approach is d... View full abstract»

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  • Algorithms for flexible equalisation in wireless communications

    Publication Year: 1995, Page(s):1940 - 1943 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (376 KB)

    In this paper the requirements for a flexible equaliser architecture for wireless communications are discussed and illustrated with results from simulation. Decision Feedback Equalisers are compared in terms of their performance and computational requirements. It has been found that the recursive modified Gram Schmidt algorithm provides superior BER performance to the least squares lattice decisio... View full abstract»

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  • Function evaluation in symbolic analysis

    Publication Year: 1995, Page(s):2217 - 2220 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    Different types of applications of symbolic analysis in circuit design are considered regarding the most adequate form of symbolic results storage and manipulation. Different mathematical procedures are examined as a function of their efficiency. Polynomial and non-polynomial admittances are considered. Hierarchical and direct approaches are compared View full abstract»

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  • Distributed diagnostic fault simulation for synchronous sequential circuits by dynamic fault partitioning

    Publication Year: 1995, Page(s):2004 - 2007 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (416 KB)

    In this paper, a distributed diagnostic fault simulation for sequential circuits by dynamic fault partitioning is proposed, in which the indistinguishable faults for all the detectable faults are obtained from different machines. Several ISCAS89 benchmark circuits have been experimented on. For a circuit s35932, less than one hour of CPU time is spent by using 4 SUN SPARC stations II View full abstract»

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  • Fast and accurate event driven simulation of partly analog phase-locked loops

    Publication Year: 1995, Page(s):1756 - 1759 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (316 KB)

    Simulation of phase-locked loops is a computationally difficult task since the system has widely varying time constants. In this paper we show that the computational load can be substantially reduced by applying event driven simulation in combination with explicit solutions of differential equations View full abstract»

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  • Spectral approach to logical distribution-free classification problem

    Publication Year: 1995, Page(s):2265 - 2268 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (292 KB)

    A spectral approach to logical distribution-free classification is presented. The discriminant function is based on logical conjunctions which are called descriptors of the classes. The main steps of the algorithm are: (1) finding a minimal descriptor for each pattern class, (2) computing a local discriminant function for each minimal descriptor and (3) making the actual classification of the obse... View full abstract»

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  • An efficient algorithm for DTMF decoding using the subband NDFT

    Publication Year: 1995, Page(s):1936 - 1939 vol.3
    Cited by:  Papers (8)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (296 KB)

    An algorithm based on the subband nonuniform discrete Fourier transform (SB-NDFT) is proposed for decoding dual-tone multi-frequency (DTMF) signals. To decode a DTMF signal, its energy at the eight DTMF frequencies must be determined by evaluating samples of the NDFT at these frequencies. In the proposed SB-NDFT algorithm, these NDFT samples are computed by decomposing the input signal into two su... View full abstract»

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  • A silicon retina for 2-D position and motion computation

    Publication Year: 1995, Page(s):2096 - 2099 vol.3
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (412 KB)

    A chip which simultaneously computes image centroid and displacement from a fixed reference point was fabricated and was fully functional. Photoreceptors, image preprocessing, centroid, and displacement computations were integrated on a single die along with circuitry to generate NTSC standard video View full abstract»

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  • A hyperstable adaptive line enhancer for frequency estimation

    Publication Year: 1995, Page(s):1600 - 1603 vol.3
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (304 KB)

    An adaptive line enhancer is presented that is based on a resonator-based IIR filter, that uses a hyperstable update to do the adaptation. The main feature of the algorithm is that the strict positive reality (SPR) requirement for convergence associated with the hyperstable update, is satisfied by imposing some simple sufficient conditions on the input sinusoidal frequencies, which may be obtained... View full abstract»

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  • Accurate extraction of simplified symbolic pole/zero expressions for large analog IC's

    Publication Year: 1995, Page(s):2083 - 2087 vol.3
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (452 KB)

    We present the sifting approach and its implementation (AnalogSifter) for symbolic analysis and automatic extraction of symbolic pole and zero expressions for analog integrated circuits. Very compact symbolic expressions for the voltage gains of the two-stage CMOS, 741, and even larger operational amplifiers, were obtained in less than 40 CPU seconds on a SUN SPARCstation 2, and the simplified res... View full abstract»

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  • A novel approach to detection of closely spaced sinusoids

    Publication Year: 1995, Page(s):2289 - 2292 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (332 KB)

    A novel method for detection of closely spaced sinusoids in noise is proposed. It is based on the notch periodogram and a simple detection criterion. Compared with other well-known approaches, this method does not require precise estimation of the signal parameters and is not computationally intensive. Simulation results are included, which confirm the excellent performance of the method View full abstract»

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  • Explicit formulas for the design of broadband matching bandpass equalizers with Chebyshev response

    Publication Year: 1995, Page(s):1644 - 1647 vol.3
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (216 KB)

    The paper presents explicit formulas for the reflection coefficient of a broadband matching Chebyshev equalizer, satisfying Youla's coefficient constraints. The results are very important in that they provide the missing links permitting computation of element values for Chebyshev equalizers of any order View full abstract»

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  • Design constraint on feedback gain vector of switching regulators for local stability

    Publication Year: 1995, Page(s):2334 - 2337 vol.3
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    A discrete-time dynamic model of closed-loop switched mode electronic regulators is derived. No small-ripple approximations are required. The same model serves for both local and global stability study: by discarding the nonlinear terms (like products of small-signal perturbations in the converter state variables) and using the z-transform, a local stability criteria is formulated. Applying the co... View full abstract»

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  • Time-domain model of transmission lines with arbitrary initial potential and current distributions for transient analysis

    Publication Year: 1995, Page(s):1832 - 1835 vol.3
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (284 KB)

    In this paper an equivalent time-domain linear network model is obtained for nonuniform transmission lines with arbitrary initial potential and current distributions. The initial potential and current distributions are included as independent current sources in the model. This model can be embedded in a circuit simulator such as SPICE. The modeling efficiency is improved by solving the encountered... View full abstract»

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