Title :
Comparison of optimal IIR and FIR filters for sigma-delta demodulator circuits
Author :
Abeysekera, Saman S. ; Zang, Zhuquan
Author_Institution :
Australian Telecommun. Res. Inst., Curtin Univ. of Technol., Perth, WA, Australia
Abstract :
Using orthonormal Laguerre functions a new scheme is presented for the design of optimal IIR filters which can be used in Σ-Δ demodulator circuits. Comparing with the conventional FIR filter approach, this design offers several attractive features. The proposed IIR filter design problem is easy to solve and numerically robust. Furthermore, the optimal IIR filter is easy to implement and therefore, well suited to VLSI implementation over the FIR architecture
Keywords :
FIR filters; IIR filters; demodulators; sigma-delta modulation; VLSI implementation; numerically robust; optimal FIR filters; optimal IIR filters; orthonormal Laguerre functions; sigma-delta demodulator circuits; Circuits; Delta modulation; Demodulation; Equations; Finite impulse response filter; Frequency; IIR filters; Quantization; Sampling methods; Very large scale integration;
Conference_Titel :
Information, Communications and Signal Processing, 1997. ICICS., Proceedings of 1997 International Conference on
Print_ISBN :
0-7803-3676-3
DOI :
10.1109/ICICS.1997.652197
