On linear-phase FIR filters with variable bandwidth
2004 (English)In: IEEE transactions on circuits and systems. 2, Analog and digital signal processing (Print), ISSN 1057-7130, Vol. 51, no 4, 181-184 p.Article in journal (Refereed) Published
Recently, a particular structure for linear-phase finite-impulse response (FIR) filters with a variable bandwidth has received attention. In this structure, the overall transfer function is a weighted linear combination of fixed subfilters, with the weights being directly determined by the bandwidth. An advantage of this structure is that there are only a few adjustable parameters (weights), which results in a simple updating routine. However, in this paper, it is demonstrated that the use of a number of fixed regular overdesigned filters, each taking care of a part of the frequency region, in fact results in a lower overall arithmetic complexity. The price to pay is an increased group and phase delay.
Place, publisher, year, edition, pages
2004. Vol. 51, no 4, 181-184 p.
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-23643DOI: 10.1109/TCSII.2004.824060Local ID: 3136OAI: oai:DiVA.org:liu-23643DiVA: diva2:243958