DocumentCode :
2843369
Title :
Computationally efficient adaptive system identification in subbands with intersubband tap assignment for undermodelled problems
Author :
Weiss, Stephan ; Sörgel, Uwe ; Stewart, Robert W.
Author_Institution :
Dept. of Electron. & Electr. Eng., Strathclyde Univ., Glasgow, UK
fYear :
1996
fDate :
3-6 Nov. 1996
Firstpage :
818
Abstract :
This paper presents an efficient approach to adaptive system identification in undermodelled cases, i.e. when the impulse response to be identified is too long to be represented by an adaptive FIR filter operating within the computational benchmarks of a DSP chip. Beyond computational savings gained from adaptive filtering in decimated subbands, the subband approach enables to use different filter lengths in the frequency bands through distribution of taps from an overall number of filter weights determined by the computational benchmark. Compared to a fullband filter of the same complexity, this method can greatly enhance the model representation of long impulse responses.
Keywords :
FIR filters; adaptive filters; adaptive signal processing; computational complexity; filtering theory; identification; signal reconstruction; DSP chip; adaptive FIR filter; adaptive system identification; algorithm complexity; computational benchmarks; computational savings; decimated subbands; filter complexity; filter lengths; filter weights; frequency bands; fullband filter; fullband model reconstruction; impulse response; intersubband tap assignment; long impulse responses; model representation; subbands; tap distribution; undermodelled problems; Adaptive filters; Adaptive signal processing; Adaptive systems; Distributed computing; Filter bank; Filtering; Finite impulse response filter; Frequency; Signal synthesis; System identification;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Signals, Systems and Computers, 1996. Conference Record of the Thirtieth Asilomar Conference on
Conference_Location :
Pacific Grove, CA, USA
ISSN :
1058-6393
Print_ISBN :
0-8186-7646-9
Type :
conf
DOI :
10.1109/ACSSC.1996.599058
Filename :
599058
Link To Document :
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