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IEEE Transactions on Circuits and Systems II: Analog and Digital Signal Processing

Issue 11 • Date Nov. 1995

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Displaying Results 1 - 14 of 14
  • Projection minimization techniques for orthogonal QMF filters with vanishing moments

    Publication Year: 1995, Page(s):694 - 701
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (735 KB)

    In many applications, a cost function is available that determines how "good" the filters of a filter bank decomposition are at performing a particular job. For example, in signal compression, the filters of a quadrature mirror filter (QMF) bank could be rated on their accuracy in compression and reconstruction of a given input signal. Given a cost function and the constraint set, it would be usef... View full abstract»

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  • Transient suppression at the boundary for 2-D digital systems

    Publication Year: 1995, Page(s):716 - 717
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (176 KB)

    We present an approach to the suppression of transients due to unspecified initial conditions or truncation of data for 2-D digital systems. The approach is based upon the use of Roesser's 2-D state space model View full abstract»

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  • A fully differential CMOS transconductance-transimpedance wideband amplifier

    Publication Year: 1995, Page(s):745 - 748
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    A high-speed wideband amplifier using a transconductance-transimpedance circuit technique is presented. The proposed circuit configuration results in more reliable performances than are typically obtained from designs using conventional pole-zero, cancellation or peaking technique. With a 0.8 μm, double poly, double metal, n-well CMOS technology and single 5-V power supply, the prelayout simula... View full abstract»

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  • Design of nonrecursive filters satisfying arbitrary magnitude and phase specifications using a least-squares approach

    Publication Year: 1995, Page(s):711 - 716
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (400 KB)

    A method is described which can be used to design nonrecursive filters satisfying prescribed magnitude and phase specifications. The method is based on formulating the absolute mean-square error between the frequency response of the practical filter and the desired response as a quadratic function. The coefficients of the filters are obtained by solving a set of linear equations. It is shown that ... View full abstract»

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  • Test results of a chip for the separation of mixed and filtered signals

    Publication Year: 1995, Page(s):748 - 751
    Cited by:  Papers (2)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (348 KB)

    We describe an algorithm and chip implementation for separating a mixture of unknown, but independent, temporal signals in static and dynamic environments. The proposed algorithm, which is a simple but conceptually powerful modification of the Herault and Jutten (HJ) algorithm, proves to be robust to parameter variations. Moreover, we present some chip results to quantify the performance of the mo... View full abstract»

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  • A design of nonuniform cosine modulated filter banks

    Publication Year: 1995, Page(s):732 - 737
    Cited by:  Papers (35)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (492 KB)

    A design method of nonuniform CMF banks is presented which is derived in association with a uniform CMF bank. In this derived nonuniform CMF bank, each constituent nonuniform filter is formed by merging the relevant uniform filters in the associated uniform CMF bank. The validity of the derived design is investigated in terms of the band selectivity of the nonuniform filters, the alias cancellatio... View full abstract»

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  • GF(pm) multiplication using polynomial residue number systems

    Publication Year: 1995, Page(s):718 - 721
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (300 KB)

    GF(pm) multiplication is computed in two stages. First, the polynomial product is computed modulus: a highly factorizable degree S polynomial, M(x), with S⩾2·m-1. This enables the product to be computed using a polynomial residue number system (PRNS). Second, the result is reduced by the irreducible polynomial, I(x), over which GF(p m) is defined. Suitable choices ... View full abstract»

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  • On the fixed-point error analysis of several fast IDCT algorithms

    Publication Year: 1995, Page(s):685 - 693
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    In this paper, a fixed-point error analysis for well-known fast l-D IDCT algorithms, such as Lee, Hou, and Vetterli, are presented. For a comparison purpose, a direct-form method is also included in our investigation. Based on the l-D analysis, the fixed-point error analysis of the row-column method and the Cho-Lee algorithm are also investigated for 2-D IDCT. Closed-form expressions for the round... View full abstract»

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  • A CMOS digitally programmable slew-rate operational amplifier

    Publication Year: 1995, Page(s):738 - 741
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (324 KB)

    A design methodology to program the slew rate of an operational amplifier (op-amp) is proposed. The designed amplifier fabricated by a 1.0 μm single-poly double-metal twin-well CMOS process is capable of providing a programmable extra bias current which can be linearly controlled by an external 4-b digital signal. The experimental results showed that the slew rate and power dissipation of the d... View full abstract»

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  • Obtaining optimum minimum points of error functions: a neural network approach

    Publication Year: 1995, Page(s):722 - 725
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    An iterative neural network solution for the problem of obtaining the optimal minima of error or cost functions containing many local minima is proposed. Use is made of an adaptive constraint function eliminating local minima previously encountered. It is shown that the method yields very fast response times, and the method is applied to a representative example with simulation results verifying i... View full abstract»

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  • A fully digitally programmable CNN chip

    Publication Year: 1995, Page(s):741 - 745
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (356 KB)

    The successful development of cellular neural networks is dependent on hardware implementation. This letter presents a VLSI implementation of a multichip-oriented, fully programmable, 3×3 digitally programmable cellular neural network (DPCNN). This chip covers most of the available one-neighborhood templates for image processing applications. Moreover, it can be easily interconnected to othe... View full abstract»

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  • A systolic architecture for modulo multiplication

    Publication Year: 1995, Page(s):725 - 729
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (352 KB)

    With the current advances in VLSI technology, traditional algorithms for Residue Number System (RNS) based architectures should be reevaluated to explore the new technology dimensions. In this brief, we introduce A θ(log n) algorithm for large moduli multiplication for RNS based architectures. A systolic array has been designed to perform the modulo multiplication algorithm. The proposed mod... View full abstract»

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  • Optimal design of digital IIR filters by model-fitting frequency response data

    Publication Year: 1995, Page(s):702 - 710
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (612 KB)

    A new frequency-domain (FD) approach is presented for optimal estimation of rational transfer functions coefficients. The proposed method seeks to match any arbitrarily-shaped FD specifications in the least-squares sense. The desired specifications may be arbitrarily spaced in frequency. The design is performed directly in the digital domain, and no analog to digital transformation is necessary. T... View full abstract»

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  • The synthesis of transient processes

    Publication Year: 1995, Page(s):729 - 732
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (328 KB)

    This brief presents a procedure for synthesizing a transient process by exciting a causal linear shift-variant system with an orthonormal random sequence. The output process has finite average energy and is described by its average energy density spectrum. This spectrum is equal to the ensemble average of the magnitude-squared of the Fourier transform process associated with the transient process.... View full abstract»

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Aims & Scope

This title ceased production in 2003. The current updated title is IEEE Transactions on Circuits and Systems II: Express Briefs.

Full Aims & Scope