A realization of FIR filters with simultaneously variable bandwidth and fractional delay
2012 (English)In: Signal Processing Conference (EUSIPCO), 2012, IEEE , 2012, 2178-2182 p.Conference paper (Refereed)
This paper introduces a realization of finite-length impulse response (FIR) filters with simultaneously variable bandwidth and fractional delay (FD). The realization makes use of impulse responses which are two-dimensional polynomials in the bandwidth and FD parameters. Unlike previous polynomial-based realizations, it utilizes the fact that a variable FD filter is typically much less complex than a variable-bandwidth filter. By separating the corresponding subfilters in the overall realization, significant savings are thereby achieved. A design example, included in the paper, shows about 65 percent multiplication and addition savings compared to the previous polynomial-based realizations. Moreover, compared to a recently introduced alternative fast filter bank approach, the proposed method offers significantly smaller group delays and group delay errors.
Place, publisher, year, edition, pages
IEEE , 2012. 2178-2182 p.
Engineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-87991ISI: 000310623800438ISBN: 978-1-4673-1068-0OAI: oai:DiVA.org:liu-87991DiVA: diva2:600988
20th European Signal Processing Conference (EUSIPCO 2012), 27-31 August 2012, Bucharest, Romania