Fully adaptive evaluation of sub-band DFT

Abdul N. Hossen*, Ulrich Heute

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contribution

32 Citations (Scopus)


The recently proposed `Sub-Band DFT' (SB-DFT) method [1], [2], [3] has two requirements to be fully adaptive. The first requirement is to select the frequency bands containing most of the signal's energy in the successive stages of the algorithm. The second requirement is to find the index of the first DFT coefficient in the sub-band to be analyzed. A method proposed for the band selection previously is both improved and simplified. The problem of the index calculation is solved in this work using a new algorithm. The fully adaptive SB-DFT works for any arbitrary number and type of decompositions (such as low-high-low-low-high, etc.). It is found to be faster than other methods that can be used in partial band DFT analysis. With this last result, many fields of application will be opened for the SB-DFT method.

Original languageEnglish
Title of host publicationProceedings - IEEE International Symposium on Circuits and Systems
PublisherPubl by IEEE
Number of pages4
ISBN (Print)0780312813
Publication statusPublished - 1993
Externally publishedYes
Event1993 IEEE International Symposium on Circuits and Systems - Chicago, IL, USA
Duration: May 3 1993May 6 1993

Publication series

NameProceedings - IEEE International Symposium on Circuits and Systems
ISSN (Print)0271-4310


Other1993 IEEE International Symposium on Circuits and Systems
CityChicago, IL, USA

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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