Title :
Efficient single-bit ternary digital filtering using sigma-delta modulator
Author :
Thompson, Adam Charles ; O´Shea, Peter ; Hussain, Zahir M. ; Steele, Brenton R.
Author_Institution :
Sch. of Electr. & Comput. Eng., RMIT, Melbourne, Vic., Australia
Abstract :
Efficient filtering of sigma-delta bit-streams using a finite-impulse response (FIR)-like digital filter is presented. The filter combines a lowpass sigma-delta modulator system and a ternary FIR filter. Unlike conventional FIR filters, the combination of the two components allows a bit stream to be filtered, with the output being retained in single-bit format.
Keywords :
FIR filters; IIR filters; digital filters; sigma-delta modulation; IIR; finite-impulse response; infinite impulse response; lowpass sigma-delta modulator system; sigma-delta bit-stream filtering; single-bit ternary digital filtering; ternary FIR filter; Delta-sigma modulation; Digital filters; Digital modulation; Filtering; Finite impulse response filter; Hardware; IIR filters; Multiplexing; Nonlinear filters; Quantization;
Journal_Title :
Signal Processing Letters, IEEE
DOI :
10.1109/LSP.2003.821734
