A fast pipelined CORDIC-based adaptive lattice filter

Author

Panescu, D. ; Hu, Y.-H. ; Tompkins, W.J.

Author_Institution

Dept. of Electr. & Comput. Eng., Wisconsin Univ., Madison, WI, USA

Volume

3

fYear

1993

fDate

27-30 April 1993

Firstpage

424

Abstract

CORDIC-based adaptive lattice prediction algorithms and a pipelined CORDIC architecture for unnormalized lattice predictors are presented. One directly updates the CORDIC rotation angles theta /sub i/, i=1 . . . N, rather than the predictor unnormalized reflection coefficients, k/sub i/=tanh theta /sub i/. This updating scheme guarantees the minimum phase condition and will take full advantage of the CORDIC architecture. Moreover, to facilitate fully pipelined operation a delayed updating algorithm which updates the rotation angle based on delayed prediction errors is developed. This algorithm leads to a modular architecture and fast throughput VLSI implementation. The authors also study the application of the delayed updating algorithm to adaptive QRS detection, for the analysis of electrocardiographic (ECG) signals.<>

Keywords

VLSI; adaptive filters; digital arithmetic; electrocardiography; filtering and prediction theory; parallel architectures; pipeline processing; waveform analysis; CORDIC-based adaptive lattice filter; ECG analysis; VLSI; adaptive QRS detection; adaptive lattice prediction algorithms; delayed updating algorithm; minimum phase; modular architecture; pipelined CORDIC architecture;

fLanguage

English

Publisher

ieee

Conference_Titel

Acoustics, Speech, and Signal Processing, 1993. ICASSP-93., 1993 IEEE International Conference on

Conference_Location

Minneapolis, MN, USA

ISSN

1520-6149

Print_ISBN

0-7803-7402-9

Type

conf

DOI

10.1109/ICASSP.1993.319525

Filename

319525