journal6 ›› 2013, Vol. 34 ›› Issue (3): 35-38.DOI: 10.3969/j.issn.1007-2985.2013.03.008

• 物理与电气工程 • 上一篇    下一篇

ΔM,Δ-Σ与ADM增量调制系统的仿真比较分析

  

  1. (张家界航空工业职业技术学院,湖南 张家界 427000)
  • 出版日期:2013-05-25 发布日期:2013-07-18
  • 作者简介:宋锐(1977-),男,湖南娄底人,张家界航空工业职业技术学院讲师,主要从事电路与系统研究.

Simulation and Comparative Analysis of ΔM,Δ-Σ and ADM Delta Modulation System

  1. (Zhangjiajie Institute of Aeronautical Engineering,Zhangjiajie 427000,Hunan China)
  • Online:2013-05-25 Published:2013-07-18

摘要:运用SystemView仿真软件分别对简单增量调制(ΔM)系统,增量总和调制(Δ-Σ)系统和自适应增量调制(ADM)系统进行了仿真,分析结果表明,自适应增量调制(ADM)系统增量的幅值在调制中能随着模拟信号的变化自动地调节,较好地克服ΔM与Δ-Σ系统增量调制所产生的过载噪声,解决了粒状噪声和超载噪声的矛盾,扩大了信号动态范围.

关键词: &Delta, M系统, &Delta, -&Sigma, 系统, ADM系统, SystemView, Matlab

Abstract: The delta modulation(ΔM) system,delta-sigma(Δ-Σ) modulation system and the     adaptive delta modulation(ADM)system have been simulated respectively by SystemView simulation software in this paper.The results demonstrate that the modulation of the amplitude increment of adaptive delta modulation (ADM) system can be adjusted automatically with the change of the analog signal,which overcomes overload noise produced by ΔM and Δ-Σ modulation systems,solves the contradiction of granular noise and overload noise,and extends the signal dynamic ranged.

Key words: ΔM system;Δ-&Sigma, system;ADM system;SystemView;Matlab

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