摘要
介绍一种基于分数延迟滤波器的宽带信号采样系统设计方法。该方法将并行采样引入误差看作一个混合系统,在H∞最优化框架下,将此误差系统等效为一个有限维线性时不变数字系统。利用线性矩阵不等式组设计系统中的数字合成滤波器。实验结果证明,该系统能有效控制引入误差,在输入非理想带限信号时同样具有良好的性能。
This paper introduces a method for the design of wideband signal sampling system based on fractional delay filters.The induced error caused by multichannel sampling can be treated as a hybrid system,which can be converted to a finite-dimensional linear time-invariant digital system using H_∞ optimization.The equivalent digital system enables the design of digital synthesis filters using linear matrix inequalities.Experimental results show that the proposed approach minimizes induced errors,and yields better performance compared to existing techniques without band limiting assumption.
出处
《计算机工程》
CAS
CSCD
北大核心
2010年第23期95-97,共3页
Computer Engineering
基金
国家部委基金资助项目
关键词
宽带信号采样
分数延迟
线性矩阵不等式
滤波器设计
wideband signal sampling
fractional delay
linear matrix inequalities
filter design
