NDLI: Design of multiplier free FIR filters using a LADF sigma-delta (/spl Sigma/-/spl Delta/) modulator

Content Provider	IEEE Xplore Digital Library
Author	Abeysekera, S.S. Padhi, K.P.
Copyright Year	2000
Description	Author affiliation: Sch. of Electr. & Electron. Eng., Nanyang Technol. Univ., Singapore (Abeysekera, S.S.)
Abstract	Sigma-delta (/spl Sigma/-/spl Delta/) modulators have been widely used over the last few decades, and one of their many applications has been in the field of FIR filter design. In this paper, we investigate the performance of multiplier free FIR filter design using the Look Ahead Decision Feedback (LADF) /spl Sigma/-/spl Delta/ architecture. The LADF /spl Sigma/-/spl Delta/ architecture, which has not been used in FIR filter design before, is compared with other conventional /spl Sigma/-/spl Delta/ architectures. It is shown that the LADF architecture has relatively low noise power at low frequencies and is preferable over the other modulators in the design of multiplier free FIR filters. The selection of demodulator filters for reducing quantization noise due to the LADF /spl Sigma/-/spl Delta/ architecture is also addressed in the paper. Using low-pass FIR filter design examples, the appropriate filter design methodology is presented in the paper.
Starting Page	65
Ending Page	68
File Size	419753
Page Count	4
File Format	PDF
ISBN	0780354826
DOI	10.1109/ISCAS.2000.856259
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2000-05-28
Publisher Place	Switzerland
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Finite impulse response filter Delta-sigma modulation Delta modulation Circuits Feedback Quantization Signal processing Hardware Signal resolution Low-frequency noise
Content Type	Text
Resource Type	Article

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