Externally linear, time-invariant systems and their application to companding signal processors

被引：189

作者：

Tsividis, Y

机构：

[1] Department of Electrical Engineering, Columbia University, New York

来源：

IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS II-EXPRESS BRIEFS | 1997年 / 44卷 / 02期

关键词：

companding signal processors; externally linear systems; input-output linear systems; log domain circuits;

D O I：

10.1109/82.554425

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This paper considers externally linear, time-invariant systems which can be internally nonlinear and/or time-varying, Several examples of the synthesis of such systems are presented, and it is argued that they offer advantages in comparison to internally linear, time-invariant systems, In particular, their use in signal processing is considered, and it is shown that they can be designed to reduce the undesirable effects of overloading and noise corruption through the use of companding, It is shown that a variety of previously proposed schemes for this purpose are all related; Several practical problems are discussed, as are performance criteria and types of measurements needed for the evaluation of the systems discussed.

引用

页码：65 / 85

页数：21

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