多相滤波法和低通滤波法实现正交插值的比较

正交插值可以由低通滤波法和多相滤波法来实现,文中从实现方式、采样率、滤波器方面进行了比较,使用matlab对两种方法进行了仿真分析,并在分析的基础上分别使用Xilinx公司的Virtex4 FPGA实现了两种结构.通过比较得出,多相滤波法相对于低通滤波法有很多优点:结构简单、资源占用少且易于实现.

Comparison between Using Low-pass Filtering and Polyphase Filtering Methods to Implement Orthogonal Interpolation

The orthogonal interpolation can be implemented by Low-pass filtering and Polyphase filtering methods.This paper compares these two methods to implement it in implementation mode,sampling rate and filtering.These two methods are simulated and analyzed by using Matlab,on basis of analyzing result,Virtex-4 FPGA of Xilinx Corporation is used to implement these two structures respectively.The compared results indicate that Polyphase filtering method has advantages of simpler structure,less resource consumption ...