Extrapolated impulse response FIR filters

Extrapolated impulse response FIR filters
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DOI：
10.1109/31.101276
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发表时间：
1990-12
期刊：
IEEE Transactions on Circuits and Systems
影响因子：
--
通讯作者：
Y. Lim;B. Liu
Y. Lim;B. Liu
中科院分区：
其他
文献类型：
--
作者：
Y. Lim;B. Liu

文献摘要

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提出了一种降低硬件复杂度的FIR滤波器结构。它利用低通和高通滤波器冲激响应样本的准周期特性来外推滤波器长度。由于减少了乘法器的数量，与直接形式结构相比，它具有较低的舍入噪声功率。在该技术中，脉冲响应的一个周期被精确地实现，而其他具有较小幅度的周期被实现为该周期的缩放版本。&gt；
An FIR filter structure with reduced hardware complexity is presented. It makes use of the quasi-periodic nature of the impulse response samples of low-pass and high-pass filters to extrapolate the filter length. Because of the reduced number of multipliers, it has lower roundoff noise power compared to the direct-form structure. In this technique, one period of the impulse response is realized accurately and the other periods with smaller magnitudes are realized as scaled versions of that period. >