Minimax design of adjustable-bandwidth linear-phase FIR filters
2006 (English)In: IEEE Transactions on Circuits And Systems Part I: Fundamental Theory and Applications, ISSN 1057-7122, E-ISSN 1558-1268, Vol. 53, no 2, 431-439 p.Article in journal (Refereed) Published
This paper considers the design of digital linear-phase finite-length impulse response (FIR) filters that have adjustable bandwidth(s) whereas the phase response is fixed. For this purpose, a structure is employed in which the overall transfer function is a weighted linear combination of fixed subfiltcrs and where the weights are directly determined by the bandwidth(s). Minimax design techniques are introduced which generate globally optimal overall filters in the minimax (Chebyshev) sense over a whole set of filter specifications. The paper also introduces a new structure for bandstop and bandpass filters with individually adjustable upper and lower band edges, and with a substantially lower arithmetic complexity compared to structures that make use of two separate adjustable-bandwidth low-pass and high-pass filters in cascade or in parallel. Design examples are included in the paper. © 2006 IEEE.
Place, publisher, year, edition, pages
2006. Vol. 53, no 2, 431-439 p.
Adjustable-bandwidth linear-phase finite impulse response (FIR) filters linear programming minimax optimization
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-34404DOI: 10.1109/TCSI.2005.857549Local ID: 21413OAI: oai:DiVA.org:liu-34404DiVA: diva2:255252