Title :
Reduction of roundoff noise in frequency sampling digital filters
Author_Institution :
California State Univ., Northridge, CA, USA
Abstract :
The issues of roundoff noise and scaling for frequency sampling filters are considered. It is shown that the conventional frequency-sampling filters suffer from severe noise problems. A very simple modification to the classical frequency-sampling filter structure is described; it can significantly improve the signal-to-noise ratio. A lowpass-filter example is included to demonstrate the effectiveness of the modification
Keywords :
digital filters; roundoff errors; frequency sampling digital filters; lowpass-filter example; noise problems; roundoff noise; scaling; signal-to-noise ratio; Adaptive filters; Digital filters; Frequency response; Integrated circuit noise; Noise level; Noise reduction; Resonator filters; Roundoff errors; Sampling methods; Transfer functions;
Conference_Titel :
Circuits and Systems, 1988., IEEE International Symposium on
Conference_Location :
Espoo
DOI :
10.1109/ISCAS.1988.15503
