Direct design of bandstop wave digital lattice filters

Yaseen, Mohamed

doi:10.1109/icecs.2010.5724645

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…LWDFs have numerous desirable properties like low coefficient sensitivity, good dynamic range and good stability [10]. LWDFs find a wide variety of applications for designing the system with minimum hardware, which also inherent all its advantageous properties [11], [12]. It is worthy to implement QMFs with minimum number of multiplier making them suitable for signal processors and VLSI implementation.…”

Section: Introductionmentioning

confidence: 99%

Multiplier-less implementation of quadrature mirror filter

Barsainya

Aggarwal

Rawat

2015

2015 4th International Conference on Reliability, Infocom Technologies and Optimization (ICRITO) (Trends and Future Directions)

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The minimum hardware and low power dissipation have always been the main concern for the efficient filter implementation. In this paper, an efficient way of implementing the lattice wave digital filter (LWDF) structure of the quadrature mirror filter (QMF) with canonic signed digit (CSD) coefficients is proposed. Further, the proposed structure is implemented using carry save adders rather than slow carry propagation adders. This increases the speed of the overall filter structure compared to the conventional way of implementing the filter with CSD coefficients. The proposed QMF is implemented and successfully tested on Xilinx Spartan XC3s200-4ft256 field programmable gate array (FPGA) device. The effectiveness of the proposed design method is proven with an example.

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Section: Introductionmentioning

confidence: 99%

Multiplier-less implementation of quadrature mirror filter

Barsainya

Aggarwal

Rawat

2015

2015 4th International Conference on Reliability, Infocom Technologies and Optimization (ICRITO) (Trends and Future Directions)

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“…. The direct design of band‐pass ladder wave digital filters has been introduced by Yaseen . The direct design of band‐stop wave digital lattice filters has been introduced by Yaseen .…”

Section: Introductionmentioning

confidence: 99%

On the design of multiband transmission functions synthesized by one wave digital lattice structure

Yaseen

2011

Circuit Theory & Apps

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SUMMARYIn this contribution, the design of multiband transmission functions is considered. Independent and arbitrary number of bands can be designed. Moreover, the whole transmission function is synthesized by one wave digital lattice structure. The approximation process starts by extracting the scattering matrix properties of multiband reference lattice structures. Consequently, the approximation problem reduces to generating a polynomial Q of degree n, which is the degree of the filter. The degree n is depending on the number of the designed bands. Hence, if the number of bands is even, n will be odd, and if the number of bands is odd, n will be even. The polynomial Q will approximate the difference phase function of the two branch polynomials. It is composed of two subpolynomials, one of them is Hurwitz and the other is anti-Hurwitz. The degrees of these subpolynomials differ by odd number if the number of bands is even and differ by even number if the number of bands is odd. Q is generated according to iterative interpolation and using explicit recursive formulas. After obtaining Q, the two subpolynomials are calculated and the two branch all-pass functions are constructed. Consequently, the filter is synthesized in the digital frequency domain. The method is applied through an illustrative example.

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Robust and direct design for highpass ladder wave digital filters exhibiting equiripple characteristics

Yaseen

2013

Digital Signal Processing

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Direct design of bandstop wave digital lattice filters

Cited by 4 publications

References 8 publications

Multiplier-less implementation of quadrature mirror filter

Multiplier-less implementation of quadrature mirror filter

On the design of multiband transmission functions synthesized by one wave digital lattice structure

Robust and direct design for highpass ladder wave digital filters exhibiting equiripple characteristics

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