Title :
Comparison of equivalent precision dedicated FFT processors
Author :
Flandre, D. ; Debleser, M. ; Vandemeulebroecke, A. ; Jespers, P.G.A.
Author_Institution :
Lab. de Microelectron., Univ. Catholique de Louvain, Louvain-la-Neuve, Belgium
Abstract :
A study of the quantization noise in FFT (fast Fourier transform) processors is undertaken with the purpose of comparing several possible Si implementations. Simulations are presented to validate theoretical results and to derive corrected formulas, that predict simulation results within 0.5 dB. Finally, a comparative study shows that application-specific integrated circuits using fixed-point arithmetic with truncation represent the best compromise for real-time integrated FFTs.<>
Keywords :
digital arithmetic; digital signal processing chips; electron device noise; fast Fourier transforms; mathematics computing; application-specific integrated circuits; dedicated FFT processors; fast Fourier transform; fixed-point arithmetic; mathematics computing; microprocessor chips; quantization noise; Circuit simulation; Clocks; Digital arithmetic; Fixed-point arithmetic; Floating-point arithmetic; Frequency; Predictive models; Quantization; Silicon; Testing;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo, Finland
DOI :
10.1109/ISCAS.1988.15313
