FIR Filter With Variable Fractional Delay and Phase Shift: Efficient Realization and Design Using Reweighted l(1)-Norm Minimization
2013 (English)Conference paper (Refereed)
This paper introduces a finite-length impulse response (FIR) digital filter having both a variable fractional delay (VFD) and a variable phase shift (VPS). The realization is reconfigurable online without redesign and without transients. It can be viewed as a generalization of the VFD Farrow structure that offers a VPS in addition to the regular VFD. The overall filter is composed of a number of fixed subfilters and a few variable multipliers whose values are determined by the desired FD and PS values. It is designed offline in an iterative manner, utilizing reweighted l(1)-norm minimization. This design procedure generates fixed subfilters with many zero-valued coefficients, typically located in the impulse response tails.
Place, publisher, year, edition, pages
IEEE , 2013. 81-84 p.
, INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS), ISSN 0271-4302 ; 2013
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-106530DOI: 10.1109/ISCAS.2013.6571787ISI: 000332006800021ISBN: 978-1-4673-5760-9OAI: oai:DiVA.org:liu-106530DiVA: diva2:716605
2013 IEEE INTERNATIONAL SYMPOSIUM ON CIRCUITS AND SYSTEMS (ISCAS)