Time-domain design of frequency-sampling digital filters for pulse shaping using linear programming techniques

Burlage, D. W.; Houts, R. C.; Vaughn, Gregg

doi:10.1109/tassp.1974.1162565

Cited by 19 publications

(3 citation statements)

References 8 publications

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“…Two of the most complex operations are conversions to and from weighted number systems (WNS), in particular the conversion from the RNS system to the conventional WNS. Many applications continue to be investigated for these conversions for both general moduli [1]- [7] and specialized cases [8], [11]. This brief presents an efficient method for this conversion for moduli of the form f2 k 0 1; 2 k ; 2 k + 1g where k is a positive integer.…”

Section: Introductionmentioning

confidence: 99%

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CNN paradigm based multilevel halftoning of digital images

Bakić

Vujovic

Brzakovic

et al. 1997

IEEE Trans. Circuits Syst. II

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An algorithm for displaying gray level images using a small number of fixed quantization levels is proposed. The algorithm, called multilevel halftoning, is based on the Cellular Neural Networks (CNN) paradigm. It tracks the CNN transient outputs and selects the image which is subjectively perceived to be the best when reduced to the allowed number of gray levels. The selection criterion is based on the "visually compensated" mean square error that takes into account the specifics of the human visual system. The results of the proposed algorithm were validated in subjective quality experiments with human subjects.

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Section: Introductionmentioning

confidence: 99%

“…This brief presents an efficient method for this conversion for moduli of the form f2 k 0 1; 2 k ; 2 k + 1g where k is a positive integer. This is a powerful moduli set that has been considered often [8], [9] and can be extended to related moduli [10], [11].…”

Section: Introductionmentioning

confidence: 99%

CNN paradigm based multilevel halftoning of digital images

Bakić

Vujovic

Brzakovic

et al. 1997

IEEE Trans. Circuits Syst. II

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“…References [1]- [11] describe some of the methods currently used to determine frequency samples that minimize approximation errors between the filter's desired amplitude response and its actual amplitude response. In a recent paper [1], a technique for designing linear phase frequency sampling filters was proposed that approximates a desired frequency response by minimizing the mean square error over the stopbands subject to constraints on the filter's amplitude response.…”

Section: Introductionmentioning

confidence: 99%

A computationally efficient technique for designing frequency sampling filters

Stubberud

1997

IEEE Trans. Circuits Syst. II

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A design method for cascade form digital nyquist filters with zero intersymbol interference

Nakayama

1985

Electron. Comm. Jpn. Pt. I

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In data communication systems, a Nyquist waveform shaping filter is an important element. The Nyquist filter not only restricts the bandwidth of the data signal, but also realizes zero intersymbol interference where the time response intersects zero at equal intervals except at one point. This paper discusses a design method of a digital Nyquist waveform shaping filter for sampled signals. In particular, the method proposes realization of overall zero intersymbol interference when an identical transfer function is used for both the transmitter and receiver filters. In this method, the transfer function coefficients are used as approximate variables. They are divided into coefficient xf for time response approximation and xf that approximates the frequency response. The condition for zero intersymbol interference is given as the linear equation for xt. Therefore, the approximation variable xt for realization of zero intersymbol interference is obtained from solution of the linear equation. On the other hand, the frequency response is optimized with the iterative approximation due to the observation that the relation between xf and the approximation function is nonlinear. The proposed method is applicable to both the FIR filter and the IIR filter for which the conventional method is not applicable. Further, the effect of the quantization errors in the multiplier coefficients and in the internal signal on the intersymbol interference is analyzed, and an estimation formula is obtained.

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Time-domain design of frequency-sampling digital filters for pulse shaping using linear programming techniques

Cited by 19 publications

References 8 publications

CNN paradigm based multilevel halftoning of digital images

CNN paradigm based multilevel halftoning of digital images

A computationally efficient technique for designing frequency sampling filters

A design method for cascade form digital nyquist filters with zero intersymbol interference

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