采用法罗结构设计了一种高效的分数延迟数字FIR滤波器

信号处理 Pub Date : 2001-08-06 DOI:10.1109/SSP.2001.955357

C. Pun, Y. Wu, S. Chan, K. Ho

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引用次数: 12

摘要

使用Farrow(1988)结构实现的分数延迟数字滤波器(FD-DF)在提供数字信号的在线调谐延迟方面非常有吸引力。本文提出了一种利用二次幂和(SOPOT)系数来设计这种基于法罗的FD-DF的新方法。使用SOPOT系数表示法，可以通过有限数量的移位和加法来实现系数乘法。设计实例表明，该方法可以大大减少法罗结构的设计时间和复杂度，同时提供相当的相位和振幅响应。

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An efficient design or fractional-delay digital FIR filters using the Farrow structure

Fractional-delay digital filter (FD-DF), implemented using the Farrow (1988) structure, is very attractive in providing online tuning delay of digital signals. This paper proposes a new method for the design of such Farrow-based FD-DF using sum-of-powers-of-two (SOPOT) coefficients. Using the SOPOT coefficient representation, coefficient multiplication can be implemented with limited number of shifts and additions. Design examples show that the proposed method can greatly reduce the design time and complexity of the Farrow structure while providing comparable phase and amplitude responses.

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来源期刊

信号处理

自引率

0.00%

发文量

5812

期刊介绍： Journal of Signal Processing is an academic journal supervised by China Association for Science and Technology and sponsored by China Institute of Electronics. The journal is an academic journal that reflects the latest research results and technological progress in the field of signal processing and related disciplines. It covers academic papers and review articles on new theories, new ideas, and new technologies in the field of signal processing. The journal aims to provide a platform for academic exchanges for scientific researchers and engineering and technical personnel engaged in basic research and applied research in signal processing, thereby promoting the development of information science and technology. At present, the journal has been included in the three major domestic core journal databases "China Science Citation Database (CSCD), China Science and Technology Core Journals (CSTPCD), Chinese Core Journals Overview" and Coaj. It is also included in many foreign databases such as Scopus, CSA, EBSCO host, INSPEC, JST, etc.