基于多相滤波结构的整数倍内插技术  

Interpolation Technique by an Integer Factor Based on Structure of Polyphase Filtering

作　　者：黄磊[1] 

机构地区：[1]中国电子科技集团公司第五十四研究所,河北石家庄050081

出　　处：《无线电工程》2011年第5期62-64,共3页Radio Engineering

摘　　要：为了有效提高数字信号处理的实时性,经常要进行整倍数采样率的转换。简要介绍多抽样率信号处理理论及内插原理,在此基础上介绍了3种高效滤波器的特点,探讨了多相滤波网络结构的等效变换和多相滤波的设计理论。重点推导并给出了基于多相分解的内插多相滤波器的工作原理和结构以及实际工程应用,这种滤波器结构算法简单,并且最大限度地减少资源消耗、降低系统复杂度,提高运算速度,对工程实现具有较大的实用价值。The conversion of sampling rate by an integer factor is frequently used in order to effectively increase the real time performance of digital signal processing.The theory of multiple-rate signal processing and interpolation are first described briefly.Based on this discussion,the equivalent transformation of network structure together with polyphase filtering design are discussed.And three types of efficacious filter are also introduced.The operation principle and structure of polyphase filter for interpolation are introduced based on polyphase decomposition,along with the application of this filter in a practical project.The structure of this filter may reduce resource consumption remarkably and decrease the system complexity.It can also increase operating speed.And this filter is very economic in the practical project.

关 键 词：数字信号处理 多速率信号处理 内插 多相滤波 

分 类 号：TN911.7[电子电信—通信与信息系统]