电子学报 ›› 2015, Vol. 43 ›› Issue (10): 2034-2039.DOI: 10.3969/j.issn.0372-2112.2015.10.023

• 学术论文 • 上一篇    下一篇

并行计算的全通数字滤波器结构

徐红1, 黄朝耿2, 宋洪波2, 周志光2, 李刚1   

  1. 1. 浙江工业大学信息工程学院, 浙江杭州 310023;
    2. 浙江财经大学信息学院, 浙江杭州 310018
  • 收稿日期:2014-03-06 修回日期:2014-09-02 出版日期:2015-10-25 发布日期:2015-10-25
  • 通讯作者: 黄朝耿
  • 作者简介:徐红 女,1978年10月出生于黑龙江大庆.讲师.2004年在浙江大学获得工学硕士学位,目前在浙江工业大学信息工程学院从事教学科研工作,博士在读.主要研究方向为数字滤波器设计与实现.E-mail:xhongzxd@zjut.edu.cn
  • 基金资助:

    国家自然科学基金(No.61273195,No.61202197);浙江省自然科学基金(No.LQ14F030008,No.LQ13F030005);浙江省公益技术研究工业项目(No.2014C31057)

Parallel Computing for Allpass Digital Filter Structures

XU Hong1, HUANG Chao-geng2, SONG Hong-bo2, ZHOU Zhi-guang2, LI Gang1   

  1. 1. College of Information Engineering, Zhejiang University of Technology, Hangzhou, Zhejiang 310023, China;
    2. School of Information, Zhejiang University of Finance & Economics, Hangzhou, Zhejiang 310018, China
  • Received:2014-03-06 Revised:2014-09-02 Online:2015-10-25 Published:2015-10-25

摘要:

本文提出了两类并行计算的全通数字滤波器结构,并通过状态空间分析方法论述了并行处理的原理.通过舍入噪声分析,给出了噪声增益的表达式,对于一个N阶全通滤波器,其舍入噪声增益为4N.数值算例验证了所提结构的性能,同时,由于其具备并行处理的能力,更加适合高吞吐量的系统实现.

关键词: 数字滤波器, 并行计算, 滤波器结构, 舍入噪声增益, 有限字长

Abstract:

Two classes of parallel computing digital filter structures for allpass systems are proposed.Based on the state-space approach, the principle of parallel processing is derived.The expression of roundoff noise gain for the proposed structures is obtained.For an Nth order allpass digital filter, it yields a roundoff noise gain of 4N if it is realized using anyone of our proposed structures.A numerical example is presented to verify the performance and implementation complexity of the proposed structures.Compared with several traditional filter structures, it is much more efficient and high-throughput for real-time implementation due to the parallel processing.

Key words: digital filters, parallel computing, filter structure, roundoff noise gain, finite word length

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