TY - GEN
T1 - Fully adaptive evaluation of sub-band DFT
AU - Hossen, Abdul N.
AU - Heute, Ulrich
PY - 1993
Y1 - 1993
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=0027277934&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=0027277934&partnerID=8YFLogxK
M3 - Conference contribution
AN - SCOPUS:0027277934
SN - 0780312813
T3 - Proceedings - IEEE International Symposium on Circuits and Systems
SP - 655
EP - 658
BT - Proceedings - IEEE International Symposium on Circuits and Systems
PB - Publ by IEEE
T2 - 1993 IEEE International Symposium on Circuits and Systems
Y2 - 3 May 1993 through 6 May 1993
ER -