Sequence characteristics of multi-level and second-order sigma-delta modulated signals

被引：4
作者：
Fujisaka, Hisato [1 ]
Kamio, Takeshi [1 ]
Ahn, Chang-Jun [2 ]
Haeiwa, Kazuhisa [1 ]
机构：
[1] Hiroshima City Univ, Fac Informat Sci, Asa Minami Ku, 3-4-1 Ozuka Higashi, Hiroshima 7313194, Japan
[2] Chiba Univ, Fac Engn, Inage Ku, Chiba 2638522, Japan
来源：
IEICE NONLINEAR THEORY AND ITS APPLICATIONS | 2013年 / 4卷 / 03期
关键词：
sigma-delta modulation; sequence pattern; piecewise linear circuit; median filter; AC signal measurement;
D O I：
10.1587/nolta.4.313
中图分类号：
O1 [数学];
学科分类号：
0701 ; 070101 ;
摘要：
A characteristic sequence pattern of first-order binary sigma-delta (SD) modulated signals was found recently and the pattern detectors are applied to various piecewise linear (PWL) circuits. However, practical analog-to-digital and digital-to-analog converters often employ second and higher-order SD modulations and multi-level oversampled data format. This paper presents sequence features of first-order multi-level and second-order binary SD modulated signals. In addition, the results of investigating the sequence features are applied to PWL-based nonlinear signal processing and signal measurement. The designed signal processing and measurement circuits are lower in hardware complexity than Nyquist-rate long word-length circuits of the same functions.
引用
收藏
页码：313 / 339
页数：27
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