Design of Efficient Multiplierless Modified Cosine-Based Comb Decimation Filters: Analysis and Implementation

Dolecek, Gordana Jovanovic; Baez, Jose Ricardo Garcia; Laddomada, Massimiliano

doi:10.1109/tcsi.2017.2653720

Cited by 23 publications

(6 citation statements)

References 20 publications

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“…Example 2 : In this example, we compare the filter from Figure 4 with classic CIC filter [1], multistage filters [2–4], and single‐stage sharpened filter [7]. Table 2 shows the maximum passband deviation, minimum folding‐band attenuation, and the number of APOS of these filters.…”

Section: Filter Designmentioning

confidence: 99%

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Decimation filters with minimum number of additions per output sample

Dudarin

Vučić

Molnar

2022

Electronics Letters

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In multistage decimation filters some stages operate at the low sampling rate, thus reducing the required number of additions per output sample (APOS). State-of-the-art methods for the design of these filters usually consider only two stages. In addition, these methods do not optimize the number of APOS explicitly. This Letter proposes a framework for the design of multistage decimation filters with minimum number of APOS. To accomplish this task, the structures which contain maximum number of stages allowed by specified decimation factor are optimized. As a case study, multistage filters whose stages are cascaded-integrator-comb filters are considered. It is illustrated by several examples that the proposed optimum filters ensure smaller number of APOS and higher folding-band attenuation than those obtained by recent methods for multistage filter design.

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Section: Filter Designmentioning

confidence: 99%

“…Such an approach is utilized in multistage decimation filters. State‐of‐the‐art methods for their design usually consider two stages [2–6].…”

Section: Introductionmentioning

confidence: 99%

Decimation filters with minimum number of additions per output sample

Dudarin

Vučić

Molnar

2022

Electronics Letters

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“…Similarly, the cosine filters are introduced in [5]. Different authors adopted results in mathematics to improve comb aliasing rejection.…”

Section: Introductionmentioning

confidence: 99%

Comb-Based Filter Design Using Sharpening Technique and Certain Palindromic Polynomial

Dolecek

2023

JAMP

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This paper presents a novel approach to improve aliasing rejection in combbased decimation filters. The method is established on certain palindromic polynomials with all zeros on the unit circle and the sharpening technique. As a result, aliasing rejection and the passband characteristic are improved. The method is illustrated with various examples and compared with the methods from the literature.

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“…Introduction: Multiplierless decimation filters are used as building blocks in high-speed multirate systems. Various methods for their design have been considered, resulting in the cascaded-integrator-comb (CIC) filter [1], sharpened CIC (SCIC) filters [2,3], and several filters obtained by modification of the original CIC response [4][5][6][7]. All filters referred to introduce passband droop, which is especially high for SCIC filters utilising folding-band sharpening.…”

mentioning

confidence: 99%

“…Our compensator with L = 5 and B = 6 provides the same deviation, but it requires only seven adders. Its coefficients are ĉ= [-1 + 2 7 , −2 3 -2 5 , −1 + 2 3 ]. Our next example illustrates the compensation of various minimax [3] and Chebyshev [2] SCIC filters with ω p > π/5 and R = 32.…”

mentioning

confidence: 99%

Optimum multiplierless compensators for sharpened cascaded‐integrator‐comb decimation filters

2018

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Folding band sharpening of the cascaded-integrator-comb filter results in a high passband droop. In applications requiring low passband deviation, the droop is reduced by connecting a low-order FIR compensator in cascade with the filter. In this Letter, the authors present a method for optimum design of compensators whose coefficients are expressed as sums of signed-power-of-two terms. The method is based on the minimisation of passband deviation, with specified total number of terms.

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Design of Efficient Multiplierless Modified Cosine-Based Comb Decimation Filters: Analysis and Implementation

Cited by 23 publications

References 20 publications

Decimation filters with minimum number of additions per output sample

Decimation filters with minimum number of additions per output sample

Comb-Based Filter Design Using Sharpening Technique and Certain Palindromic Polynomial

Optimum multiplierless compensators for sharpened cascaded‐integrator‐comb decimation filters

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