多速率转换信号频谱研究

摘要

在现有工作的基础上利用傅里叶变换的定义,推导了整数倍抽取和整数倍零值内插后信号的频谱,并结合仿真实验验证了抽取和零值内插对信号频谱的影响,通过大量的仿真实验分析说明了多速率转换应注意的问题。%On the basis of the existing work,the spectrum of the signal after integer times extraction and integer times zero values interpolation is derived using Fourier Transform（FT）.The influence of extraction and interpolation on the spectrum of the signal is a