基于半带滤波器的2^N倍数字内插及其DSP的实现  

Implement of 2N digital interpolation by TMS320C5402 based on half-band filter

作　　者：郑应强[1] 于素芬[2] 张振仁[1] 

机构地区：[1]西安市第二炮兵工程学院,陕西西安710025 [2]北京铁路局北京勘测设计院,北京100860

出　　处：《机电工程技术》2005年第2期35-37,共3页Mechanical & Electrical Engineering Technology

摘　　要：多倍数字内插技术在软件无线电及全数字通信系统中有着广泛的应用。采用半带滤波器实现2N倍内插,可以减小计算量,特别适合于实时信号处理。本文根据TMS320C5402的特点,介绍了一种基于半带滤波器的2N倍数字内插算法和该算法在TMS320C5402上的实现方案,并对算法的运行结果进行了分析。Digital interpolation has wide application in software radio and digital communication systems. Half-band filter can reduce computation cost when it's used for 2N interpolation and fit for real-time signal processing. After analyzing advantage and disadvantage of circle buff addressing scheme compared with linear buff one,this paper presents how to realize 2N digital interpolation based on half-band filter by using TMS320C5402. The simulation results and some key points have been described in the end of the paper.

关 键 词：半带滤波器 数字内插 TMS320C5402 

分 类 号：TN713[电子电信—电路与系统]