Improved stability and performance from sigma-delta modulators using 1-bit vector quantization

Lars Risbo

doi:10.1109/ISCAS.1993.393985

Improved stability and performance from sigma-delta modulators using 1-bit vector quantization

Lars Risbo

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Abstract

A novel class of sigma-delta modulators is presented. The usual scalar 1-b quantizer in a sigma-delta modulator is replaced by a 1-b vector quantizer with a N-dimensional input state-vector from the linear feedback filter. Generally, the vector quantizer changes the nonlinear dynamics of the modulator, and a proper choice of vector quantizer can improve both system stability and coding performance. It is shown how to construct the vector quantizer in order to limit the excursions in state-space. The proposed method is demonstrated graphically for a simple second-order modulator

Original language	English
Title of host publication	Proceedings of the IEEE International Symposium on Circuits and Systems
Publisher	IEEE
Publication date	1993
Pages	1365-1368
ISBN (Print)	07-80-31281-3
DOIs	https://doi.org/10.1109/ISCAS.1993.393985
Publication status	Published - 1993
Event	1993 IEEE International Symposium on Circuits and Systems - Chicago, IL, United States Duration: 3 May 1993 → 6 May 1993 http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=1067

Conference

Conference	1993 IEEE International Symposium on Circuits and Systems
Country/Territory	United States
City	Chicago, IL
Period	03/05/1993 → 06/05/1993
Internet address	http://ieeexplore.ieee.org/xpl/mostRecentIssue.jsp?punumber=1067

Bibliographical note

Copyright: 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

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title = "Improved stability and performance from sigma-delta modulators using 1-bit vector quantization",

abstract = "A novel class of sigma-delta modulators is presented. The usual scalar 1-b quantizer in a sigma-delta modulator is replaced by a 1-b vector quantizer with a N-dimensional input state-vector from the linear feedback filter. Generally, the vector quantizer changes the nonlinear dynamics of the modulator, and a proper choice of vector quantizer can improve both system stability and coding performance. It is shown how to construct the vector quantizer in order to limit the excursions in state-space. The proposed method is demonstrated graphically for a simple second-order modulator",

author = "Lars Risbo",

note = "Copyright: 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE; 1993 IEEE International Symposium on Circuits and Systems, ISCAS '93 ; Conference date: 03-05-1993 Through 06-05-1993",

year = "1993",

doi = "10.1109/ISCAS.1993.393985",

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N1 - Copyright: 1993 IEEE. Personal use of this material is permitted. However, permission to reprint/republish this material for advertising or promotional purposes or for creating new collective works for resale or redistribution to servers or lists, or to reuse any copyrighted component of this work in other works must be obtained from the IEEE

PY - 1993

Y1 - 1993

N2 - A novel class of sigma-delta modulators is presented. The usual scalar 1-b quantizer in a sigma-delta modulator is replaced by a 1-b vector quantizer with a N-dimensional input state-vector from the linear feedback filter. Generally, the vector quantizer changes the nonlinear dynamics of the modulator, and a proper choice of vector quantizer can improve both system stability and coding performance. It is shown how to construct the vector quantizer in order to limit the excursions in state-space. The proposed method is demonstrated graphically for a simple second-order modulator

AB - A novel class of sigma-delta modulators is presented. The usual scalar 1-b quantizer in a sigma-delta modulator is replaced by a 1-b vector quantizer with a N-dimensional input state-vector from the linear feedback filter. Generally, the vector quantizer changes the nonlinear dynamics of the modulator, and a proper choice of vector quantizer can improve both system stability and coding performance. It is shown how to construct the vector quantizer in order to limit the excursions in state-space. The proposed method is demonstrated graphically for a simple second-order modulator

U2 - 10.1109/ISCAS.1993.393985

DO - 10.1109/ISCAS.1993.393985

M3 - Article in proceedings

SN - 07-80-31281-3

SP - 1365

EP - 1368

BT - Proceedings of the IEEE International Symposium on Circuits and Systems

PB - IEEE

T2 - 1993 IEEE International Symposium on Circuits and Systems

Y2 - 3 May 1993 through 6 May 1993

ER -

Improved stability and performance from sigma-delta modulators using 1-bit vector quantization

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