DocumentCode :
3343642
Title :
Roundoff noise analysis of state-space digital filters implemented on floating-point digital signal processors
Author :
Bomar, Bruce W. ; Smith, L. Montgomery ; Joseph, Roy D.
Author_Institution :
Electr. & Comput. Eng., Tennessee Univ. Space Inst., Tullahoma, TN, USA
Volume :
3
fYear :
1995
fDate :
30 Apr-3 May 1995
Firstpage :
2023
Abstract :
An expression is obtained for the floating-point roundoff noise variance at the output of a general Nth-order state-space digital filter. This expression is then simplified for a filter implemented on a floating-point digital signal processor. Since these processors carry extended precision within registers, it is found that the floating-point roundoff noise gain is identical to the fixed-point roundoff noise gain used extensively in the past for designing optimal and near-optimal fixed-point digital filters. Therefore, previous work to optimize fixed-point realizations is directly applicable to the floating-point realizations
Keywords :
digital filters; digital signal processing chips; filtering theory; floating point arithmetic; roundoff errors; state-space methods; floating-point digital signal processors; roundoff noise analysis; state-space digital filters; Covariance matrix; Digital filters; Digital signal processors; Equations; Finite impulse response filter; Frequency; Quantization; Registers; Signal analysis; Transfer functions;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1995. ISCAS '95., 1995 IEEE International Symposium on
Conference_Location :
Seattle, WA
Print_ISBN :
0-7803-2570-2
Type :
conf
DOI :
10.1109/ISCAS.1995.523820
Filename :
523820
Link To Document :
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