摘要
多速率信号处理是软件无线电的理论基础,该文介绍了一种高效的多速率信号处理方法,即采用CIC滤波器、HB滤波器、FIR滤波器和多相滤波器等实现抽取和内插以达到改变信号速率的目的。文中介绍了各种滤波器的基本原理,分析了设计实现时需要注意的问题,并给出了采用这种多速率信号处理方法实现数字下变频的设计结果。
Multi - Rate signal processing is a basic theory in software radio. This paper introduces a method of multi - rate signal processing, which uses CIC filters, HB filters, FIR filters and polyphase filters to reach the goal of decimation and interpolation, in order to change the rate of digital signals. It introduces the structures of the typical filters, analyzes some relevant issues, and brings forward the result of using this technique to design a digital down converter.
出处
《实验科学与技术》
2006年第6期113-116,共4页
Experiment Science and Technology
