DocumentCode :
2657426
Title :
Time-frequency estimation from either signal domain-implementation on a RISC system
Author :
Adams, Daniel O. ; Wilbur, JoEllen
Author_Institution :
NCR Corp., West Columbia, TX, USA
fYear :
1990
fDate :
1-3 May 1990
Firstpage :
1553
Abstract :
A Wigner-distribution-based spectral estimation is optimized for high-level-language implementation on a reduced-instruction-set-computer (RISC) architecture. Traditionally, time-frequency estimators have relied on time histories for the input. The implementation presented allows for equivalent transformation to the t-w plane given either time or frequency input data. The estimator employs a generalized form of the WD and is developed at the algorithm level to offer both flexibility and computational efficiency. Several DFT alternatives including the radix-2 FFT, radix-4 FFT, SRFFT, WFTA, and PFA are investigated in terms of relative computational delays versus a floating-point addition-time-to-multiply-time ratio
Keywords :
computerised signal processing; fast Fourier transforms; high level languages; reduced instruction set computing; signal detection; DFT; PFA; RISC system; SRFFT; WFTA; Wigner-distribution-based spectral estimation; algorithm level; computational efficiency; floating-point addition-time-to-multiply-time ratio; high-level-language implementation; radix-2 FFT; radix-4 FFT; signal domain; t-w plane; time-frequency estimators; Clocks; Discrete Fourier transforms; High level languages; History; Reduced instruction set computing; Signal processing; Signal processing algorithms; Smoothing methods; Time frequency analysis; Workstations;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Circuits and Systems, 1990., IEEE International Symposium on
Conference_Location :
New Orleans, LA
Type :
conf
DOI :
10.1109/ISCAS.1990.112430
Filename :
112430
Link To Document :
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