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.
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.
出处
《吉首大学学报（自然科学版）》
CAS
2013年第3期35-38,共4页
Journal of Jishou University(Natural Sciences Edition)
