Optimal decoding for data acquisition applications of sigma delta modulators

Author

Hein, Søren ; Zakhor, Avideh

Author_Institution

Dept. of Electr. Eng. & Comput. Sci., California Univ., Berkeley, CA, USA

Volume

41

Issue

2

fYear

1993

fDate

2/1/1993 12:00:00 AM

Firstpage

602

Lastpage

616

Abstract

A class of optimal nonlinear decoding algorithms is proposed for data acquisition applications of sigma-delta (ΣΔ) modulators. The technique is applicable to all current ΣΔ structures, including single and double-loop, cascade, and interpolative modulators. While the performance of the technique is identical to that of other optimal nonlinear decoding schemes such as table lookup, it is considerably simpler to implement. Numerical results are presented to compare its performance to that of linear decoders. Effects of circuit imperfections on performance are examined

Keywords

data acquisition; decoding; modulators; cascade modulators; circuit imperfections; data acquisition applications; double-loop modulators; interpolative modulators; optimal nonlinear decoding algorithms; performance; sigma delta modulators; single-loop modulators; Circuits; Data acquisition; Decoding; Delta modulation; Delta-sigma modulation; Modulation coding; Programmable logic arrays; Signal processing; Signal processing algorithms; Signal resolution; Table lookup;

fLanguage

English

Journal_Title

Signal Processing, IEEE Transactions on

Publisher

ieee

ISSN

1053-587X

Type

jour

DOI

10.1109/78.193202

Filename

193202