A New Multistage Comb-Modified Rotated Sinc (RS) Decimator with Sharpened Magnitude Response

Gordana Jovanovic DOLECEK; Sanjit K. MITRA

doi:10.1093/ietisy/e88-d.7.1331

A New Multistage Comb-Modified Rotated Sinc (RS) Decimator with Sharpened Magnitude Response

Gordana Jovanovic DOLECEK, Sanjit K. MITRA

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This paper presents a new multistage comb-rotated sinc (RS) decimator with a sharpened magnitude response. Novelty of this paper is that the multistage structure has more design parameters that provides additional flexibility to the design procedure. It uses different sharpening polynomials and different cascaded comb filters at different stages. As the comb filters at the latter stages are of lower order than that of the original comb filter, the use of more complex sharpening polynomials at latter stages is possible. This leads to an improvement of the frequency characteristic without a significant increase in the complexity of the overall filter. The comb filter of the first stage is realized in a non-recursive form and can be implemented in a computationally efficient form by making use of the polyphase decomposition of the transfer function in which the subfilters operate at a lower rate that depends on the down-sampling factor employed in the first stage. In addition, both multipliers of the rotated sinc (RS) filter of the second stage work at a lower rate.

Publication: IEICE TRANSACTIONS on Information Vol.E88-D No.7 pp.1331-1339

Publication Date: 2005/07/01

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DOI: 10.1093/ietisy/e88-d.7.1331

Type of Manuscript: Special Section PAPER (Special Section on Recent Advances in Circuits and Systems--Part 1)

Category: Digital Signal Processing

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Gordana Jovanovic DOLECEK, Sanjit K. MITRA, "A New Multistage Comb-Modified Rotated Sinc (RS) Decimator with Sharpened Magnitude Response" in IEICE TRANSACTIONS on Information, vol. E88-D, no. 7, pp. 1331-1339, July 2005, doi: 10.1093/ietisy/e88-d.7.1331.
Abstract: This paper presents a new multistage comb-rotated sinc (RS) decimator with a sharpened magnitude response. Novelty of this paper is that the multistage structure has more design parameters that provides additional flexibility to the design procedure. It uses different sharpening polynomials and different cascaded comb filters at different stages. As the comb filters at the latter stages are of lower order than that of the original comb filter, the use of more complex sharpening polynomials at latter stages is possible. This leads to an improvement of the frequency characteristic without a significant increase in the complexity of the overall filter. The comb filter of the first stage is realized in a non-recursive form and can be implemented in a computationally efficient form by making use of the polyphase decomposition of the transfer function in which the subfilters operate at a lower rate that depends on the down-sampling factor employed in the first stage. In addition, both multipliers of the rotated sinc (RS) filter of the second stage work at a lower rate.
URL: https://global.ieice.org/en_transactions/information/10.1093/ietisy/e88-d.7.1331/_p

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@ARTICLE{e88-d_7_1331,
author={Gordana Jovanovic DOLECEK, Sanjit K. MITRA, },
journal={IEICE TRANSACTIONS on Information},
title={A New Multistage Comb-Modified Rotated Sinc (RS) Decimator with Sharpened Magnitude Response},
year={2005},
volume={E88-D},
number={7},
pages={1331-1339},
abstract={This paper presents a new multistage comb-rotated sinc (RS) decimator with a sharpened magnitude response. Novelty of this paper is that the multistage structure has more design parameters that provides additional flexibility to the design procedure. It uses different sharpening polynomials and different cascaded comb filters at different stages. As the comb filters at the latter stages are of lower order than that of the original comb filter, the use of more complex sharpening polynomials at latter stages is possible. This leads to an improvement of the frequency characteristic without a significant increase in the complexity of the overall filter. The comb filter of the first stage is realized in a non-recursive form and can be implemented in a computationally efficient form by making use of the polyphase decomposition of the transfer function in which the subfilters operate at a lower rate that depends on the down-sampling factor employed in the first stage. In addition, both multipliers of the rotated sinc (RS) filter of the second stage work at a lower rate.},
keywords={},
doi={10.1093/ietisy/e88-d.7.1331},
ISSN={},
month={July},}

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TY - JOUR
TI - A New Multistage Comb-Modified Rotated Sinc (RS) Decimator with Sharpened Magnitude Response
T2 - IEICE TRANSACTIONS on Information
SP - 1331
EP - 1339
AU - Gordana Jovanovic DOLECEK
AU - Sanjit K. MITRA
PY - 2005
DO - 10.1093/ietisy/e88-d.7.1331
JO - IEICE TRANSACTIONS on Information
SN -
VL - E88-D
IS - 7
JA - IEICE TRANSACTIONS on Information
Y1 - July 2005
AB - This paper presents a new multistage comb-rotated sinc (RS) decimator with a sharpened magnitude response. Novelty of this paper is that the multistage structure has more design parameters that provides additional flexibility to the design procedure. It uses different sharpening polynomials and different cascaded comb filters at different stages. As the comb filters at the latter stages are of lower order than that of the original comb filter, the use of more complex sharpening polynomials at latter stages is possible. This leads to an improvement of the frequency characteristic without a significant increase in the complexity of the overall filter. The comb filter of the first stage is realized in a non-recursive form and can be implemented in a computationally efficient form by making use of the polyphase decomposition of the transfer function in which the subfilters operate at a lower rate that depends on the down-sampling factor employed in the first stage. In addition, both multipliers of the rotated sinc (RS) filter of the second stage work at a lower rate.
ER -