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Proceedings of the IEEE

Issue 1 • Jan 1988

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Displaying Results 1 - 10 of 10
  • Dithering with blue noise

    Publication Year: 1988, Page(s):56 - 79
    Cited by:  Papers (202)  |  Patents (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2252 KB)

    Digital halftoning, also referred to as spatial dithering is a method of rendering the illusion of continuous-tone pictures on displays that are capable of only producing binary picture elements. The concept of blue noise-high-frequency white noise-is introduced and found to have desirable properties for halftoning. Efficient algorithms for dithering with blue noise, based on perturbed error diffu... View full abstract»

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  • Channel characterization using bispectral analysis

    Publication Year: 1988, Page(s):88 - 89
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (140 KB)

    A method of characterizing a slowly varying linear channel in the presence of white Gaussian noise is proposed. The method uses a non-Gaussian probing signal and performs a bispectral analysis of the received signal View full abstract»

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  • Reduced instruction set computer architecture

    Publication Year: 1988, Page(s):38 - 55
    Cited by:  Papers (17)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    A tutorial on the reduced instruction set computer (RISC) approach is presented and the key design issues involved in RISC architecture are highlighted. The results of a number of studies on the instruction execution characteristics of compiled high-level-language programs are examined first. The results of these studies inspired the RISC movement. Approaches to tree key RISC design issues are the... View full abstract»

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  • Comparison of sequences for local area networks using spread-spectrum multiple access

    Publication Year: 1988, Page(s):87 - 88
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    The construction and comparative analysis of sequence sets that are often used as a basis for code-division multiple access (CDMA) systems and spread-spectrum local area networks (SS-LAN) are presented. The results obtained are useful in the definition of the ideal code properties and the selection of sequence sets for particular types of SS-LAN applications View full abstract»

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  • The digital all-pass filter: a versatile signal processing building block

    Publication Year: 1988, Page(s):19 - 37
    Cited by:  Papers (226)  |  Patents (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1448 KB)

    The properties of digital all-pass filters are reviewed and a broad overview of the diversity of applications in digital filtering is provided. Starting with the definition and basic properties of a scalar all-pass function, a variety of structures satisfying the all-pass property are assembled, with emphasis placed on the concept of structural losslessness. Applications are then outlined in notch... View full abstract»

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  • Power spectrum estimation with partially known autocorrelation function

    Publication Year: 1988, Page(s):84 - 85
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (188 KB)

    It is shown that the use of exact values of the autocorrelation in place of their estimates at one or more lags may lead to two opposite effects on the variance of the corresponding nonparametric power spectrum estimator. The use of the exact values can increase the variance within some frequency bands while reducing it within other bands along the Nyquist interval. The location and the width of t... View full abstract»

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  • A fast frequency-domain adaptive algorithm

    Publication Year: 1988, Page(s):80 - 82
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (192 KB)

    A time-varying convergence factor μ is proposed for the frequency-domain LMS (least-mean-square) adaptive algorithm, which results in the frequency-domain optimal block algorithm (FOBA). The FOBA is the frequency-domain implementation of the recently proposed optimum block algorithm (OBA). The FOBA results in computational savings in comparison to the OBA and in performance enhancement relative... View full abstract»

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  • Fast frequency synthesis by PLL using a continuous phase divider

    Publication Year: 1988, Page(s):85 - 86
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (180 KB)

    A method of constructing a frequency synthesizer with a short settling time is suggested. The frequency synthesizer is based on a double-loop phase-locked loop which has a short convergence time and on a continuous-phase divider that matches the VCO (voltage-controlled oscillator) frequency to the reference frequency View full abstract»

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  • Assuring quality and reliability of complex electronic systems: hardware and software

    Publication Year: 1988, Page(s):5 - 18
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1428 KB)

    Some of the most recent trends in expanding the scope of traditional quality-assurance techniques to include all phases of design, development, manufacture, and deployment, considering both hardware and software, are discussed. Emerging views on quality management are discussed. The life cycle of a product, beginning with the setting of requirements, and including assuring parts reliability, evalu... View full abstract»

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  • Frequency estimation error in Pisarenko harmonic decomposition method

    Publication Year: 1988, Page(s):82 - 84
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (244 KB)

    The dependency of the variance of the Pisarenko harmonic decomposition method frequency estimation on the record length, the signal-to-noise ratio, and the difference of underlying frequencies is shown. Extensive simulations were performed and consistent results were observed View full abstract»

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H. Joel Trussell
North Carolina State University