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

Issue 6 • Jun 1995

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Displaying Results 1 - 7 of 7
  • Design of multidimensional finite-wordlength FIR and IIR filters by simulated annealing

    Publication Year: 1995, Page(s):424 - 431
    Cited by:  Papers (30)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (780 KB)

    This paper describes a new approach to the design of multidimensional (M-D) finite-wordlength digital filters with specifications in the frequency and spatial domains. The approach is based on stochastic optimization and extends previous work on finite impulse response (FIR) filters in two ways: by inclusion of spatial constraints and by application to the case of infinite impulse response (IIR) f... View full abstract»

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  • Nonorthogonal signal representation by Gaussians and Gabor functions

    Publication Year: 1995, Page(s):402 - 413
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (948 KB)

    This paper describes a novel approach for nonorthogonal representation of signals using Gaussians and an extension of this method for Gabor representation of signals, based on the equivalence of Gabor expansion to Gaussian expansion in the frequency domain. The Gaussian expansion scheme yields an efficient representation of signals for low number of bits per pixel and is better than the correspond... View full abstract»

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  • A low-power CMOS VGA for 50 Mb/s disk drive read channels

    Publication Year: 1995, Page(s):370 - 376
    Cited by:  Papers (103)  |  Patents (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    We describe an all CMOS variable gain amplifier (VGA) suitable for use in disk drive read channels. The VGA maintains a 3 dB bandwidth greater than 85 MHz throughout its gain range. This ensures good phase linearity for data transfer rates of up to 50 Mb/s. The VGA provides a 25 db gain variation along an ideal exponential gain to control voltage curve and 30 dB of gain control if ideal exponentia... View full abstract»

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  • Stability of the 2-D state-space system with overflow and quantization

    Publication Year: 1995, Page(s):432 - 434
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (208 KB)

    Two-dimensional (2-D) digital filters are investigated with and without the nonlinear effects of overflow and quantization when implemented in fixed-point arithmetic. A sufficient condition is established for the stability of the linear Fornasini-Marchesini state-space model. The same system is then studied for stability when implemented using two's complement arithmetic. The combined effects of o... View full abstract»

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  • Partial column FFT pipelines

    Publication Year: 1995, Page(s):414 - 423
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (740 KB)

    This paper presents the development of two efficient FFT implementation algorithms which allow for more parallelization than the standard pipeline. M=2q radix r parallel computational elements are allocated per column of the FFT flowgraph, and the constant geometry FFT is used for uniform stages. The first method solves the interstage data shuffle problem by decomposing the perfect shuf... View full abstract»

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  • Analysis and control of the signal dependent performance of adaptive echo cancellers in 4-wire loop telephony

    Publication Year: 1995, Page(s):377 - 392
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1176 KB)

    The central 4-wire loop telephone system, with an adaptive echo canceller at either end of the loop, typically achieves good echo suppression. However, poorly cancelled echoes and/or signal bursting have been observed. Such undesirable behavior has been linked to the presence of cross correlation between and autocorrelation of the signals transmitted by the subscribers. The primary aim of this pap... View full abstract»

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  • An efficient representation of nonstationary signals using mixed-transforms with applications to speech

    Publication Year: 1995, Page(s):393 - 401
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (748 KB)

    A useful technique is presented to efficiently represent nonstationary signals by combining the wavelet and mixed-transforms. First, the signal is split into subbands using the discrete wavelet transform. Specifically, the subband splitting is performed by employing the scaling and the wavelet functions to low-pass and high-pass filter the signal. Next, each of these subbands is represented using ... 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.

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