数字下变频中抽取滤波器的仿真与实现  

Simulation and Realization of Decimation Filter in Digital Down Conversion

作　　者：陈惠兵[1] 杨惠[2] 

机构地区：[1]西安理工大学电子工程系,西安710048 [2]西安理工大学电气工程系,西安710048

出　　处：《上海电机学院学报》2005年第6期8-12,共5页Journal of Shanghai Dianji University

摘　　要：数字下变频技术是软件无线电的关键技术之一。实现抽取的关键问题是如何实现抽取前的数字滤波,特别是抽取时滤波器的设计与实现;对一个具体的信号,给出了一个可行的滤波器设计方案,并且在一个软件无线电模型基础之上,用Mtalab语言对抽取技术进行了仿真,恢复了原始信号,从而验证了抽取滤波器的可实现性。Digital down conversion is one of the key techniques of software radio.How to realize digital filter before extraction,especially the design and realization of filter during extraction has become the key problem of realization of extraction.A feasible project is produced on filter for a specific signal,simulation using Matlab is realized and the original signal is renewed on the basis of the model of software radio,thus the feasibility of decimation filter is proved.

关 键 词：软件无线电 数字下变频 积分梳状滤波器 半带滤波器 

分 类 号：TN713[电子电信—电路与系统]