Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique

Sumedh Dhabu; A. P. Vinod

doi:10.1109/TSP.2015.7296406

Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique

Sumedh Dhabu, A. P. Vinod

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

2 Citations (Scopus)

Abstract

This paper presents the design of interpolated continuously variable fractional delay based filter (ICVFD filter) with fine control over the cutoff frequency. In the ICVFD filter, each unit delay of the prototype lowpass filter is replaced by a continuously variable fractional delay (CVFD) element proposed in this paper. The CVFD element has the same multiplication complexity as that of the second order fractional delay structure used in the existing fractional delay based variable filter, however it provides fractional delays corresponding to the higher order fractional delay structures. Hence the proposed ICVFD filter provides wider cutoff frequency range compared to the existing fractional delay based filter. The ICVFD filter is also capable of providing variable bandpass and highpass responses. Design example shows that the ICVFD filter offers gate-count reduction of 24.6% over the variable filters published in the literature.

Original language	English
Title of host publication	2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015
Editors	Karol Molnar, Norbert Herencsar
Publisher	Institute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)	9781479984985
DOIs	https://doi.org/10.1109/TSP.2015.7296406
Publication status	Published - 9 Oct 2015
Externally published	Yes
Event	2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015 - Prague, Czech Republic Duration: 9 Jul 2015 → 11 Jul 2015

Publication series

Name	2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015

Conference

Conference	2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015
Country/Territory	Czech Republic
City	Prague
Period	9/07/15 → 11/07/15

Bibliographical note

Publisher Copyright:
© 2015 IEEE.

Keywords

finite impulse response filter
fractional delay
reconfigurable digital filter

Access to Document

10.1109/TSP.2015.7296406

Cite this

Dhabu, S., & Vinod, A. P. (2015). Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique. In K. Molnar, & N. Herencsar (Eds.), 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015 Article 7296406 (2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/TSP.2015.7296406

Dhabu, Sumedh ; Vinod, A. P. / Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique. 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015. editor / Karol Molnar ; Norbert Herencsar. Institute of Electrical and Electronics Engineers Inc., 2015. (2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015).

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title = "Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique",

abstract = "This paper presents the design of interpolated continuously variable fractional delay based filter (ICVFD filter) with fine control over the cutoff frequency. In the ICVFD filter, each unit delay of the prototype lowpass filter is replaced by a continuously variable fractional delay (CVFD) element proposed in this paper. The CVFD element has the same multiplication complexity as that of the second order fractional delay structure used in the existing fractional delay based variable filter, however it provides fractional delays corresponding to the higher order fractional delay structures. Hence the proposed ICVFD filter provides wider cutoff frequency range compared to the existing fractional delay based filter. The ICVFD filter is also capable of providing variable bandpass and highpass responses. Design example shows that the ICVFD filter offers gate-count reduction of 24.6\% over the variable filters published in the literature.",

keywords = "finite impulse response filter, fractional delay, reconfigurable digital filter",

author = "Sumedh Dhabu and Vinod, \{A. P.\}",

note = "Publisher Copyright: {\textcopyright} 2015 IEEE.; 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015 ; Conference date: 09-07-2015 Through 11-07-2015",

year = "2015",

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doi = "10.1109/TSP.2015.7296406",

language = "English",

series = "2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015",

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Dhabu, S & Vinod, AP 2015, Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique. in K Molnar & N Herencsar (eds), 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015., 7296406, 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015, Institute of Electrical and Electronics Engineers Inc., 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015, Prague, Czech Republic, 9/07/15. https://doi.org/10.1109/TSP.2015.7296406

Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique. / Dhabu, Sumedh; Vinod, A. P.
2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015. ed. / Karol Molnar; Norbert Herencsar. Institute of Electrical and Electronics Engineers Inc., 2015. 7296406 (2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015).

Research output: Chapter in Book/Conference Proceeding/Report › Conference Paper published in a book › peer-review

TY - GEN

T1 - Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique

AU - Dhabu, Sumedh

AU - Vinod, A. P.

PY - 2015/10/9

Y1 - 2015/10/9

N2 - This paper presents the design of interpolated continuously variable fractional delay based filter (ICVFD filter) with fine control over the cutoff frequency. In the ICVFD filter, each unit delay of the prototype lowpass filter is replaced by a continuously variable fractional delay (CVFD) element proposed in this paper. The CVFD element has the same multiplication complexity as that of the second order fractional delay structure used in the existing fractional delay based variable filter, however it provides fractional delays corresponding to the higher order fractional delay structures. Hence the proposed ICVFD filter provides wider cutoff frequency range compared to the existing fractional delay based filter. The ICVFD filter is also capable of providing variable bandpass and highpass responses. Design example shows that the ICVFD filter offers gate-count reduction of 24.6% over the variable filters published in the literature.

AB - This paper presents the design of interpolated continuously variable fractional delay based filter (ICVFD filter) with fine control over the cutoff frequency. In the ICVFD filter, each unit delay of the prototype lowpass filter is replaced by a continuously variable fractional delay (CVFD) element proposed in this paper. The CVFD element has the same multiplication complexity as that of the second order fractional delay structure used in the existing fractional delay based variable filter, however it provides fractional delays corresponding to the higher order fractional delay structures. Hence the proposed ICVFD filter provides wider cutoff frequency range compared to the existing fractional delay based filter. The ICVFD filter is also capable of providing variable bandpass and highpass responses. Design example shows that the ICVFD filter offers gate-count reduction of 24.6% over the variable filters published in the literature.

KW - finite impulse response filter

KW - fractional delay

KW - reconfigurable digital filter

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DO - 10.1109/TSP.2015.7296406

M3 - Conference Paper published in a book

AN - SCOPUS:84960194626

T3 - 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015

BT - 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015

A2 - Molnar, Karol

A2 - Herencsar, Norbert

PB - Institute of Electrical and Electronics Engineers Inc.

T2 - 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015

Y2 - 9 July 2015 through 11 July 2015

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Dhabu S, Vinod AP. Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique. In Molnar K, Herencsar N, editors, 2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015. Institute of Electrical and Electronics Engineers Inc. 2015. 7296406. (2015 38th International Conference on Telecommunications and Signal Processing, TSP 2015). doi: 10.1109/TSP.2015.7296406

Design of reconfigurable digital filter based on continuously variable fractional delay and interpolation technique

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