Single filter frequency-response masking FIR filters

被引：15

作者：

Gustafsson, O ^{[1
]}

Johansson, H ^{[1
]}

Wanhammar, L ^{[1
]}

机构：

[1] Linkoping Univ, Dept Elect Engn, SE-58183 Linkoping, Sweden

来源：

JOURNAL OF CIRCUITS SYSTEMS AND COMPUTERS | 2003年 / 12卷 / 05期

关键词：

frequency-response masking; FIR filter; pipeline/interleaving; time-multiplexing folding;

D O I：

10.1142/S0218126603001094

中图分类号：

TP3 [计算技术、计算机技术];

学科分类号：

0812 ;

摘要：

In this work filter structures that decrease the required number of multipliers and adders for implementation of linear-phase FIR filters using frequency-response masking techniques are introduced. The basic idea of the proposed structures is that identical subfilters are used. This leads to the same arithmetic structure can be multiplexed in the implementation, reducing the number of required multipliers and adders. The subfilters are mapped using the folding transformation to obtain an area-efficient time-multiplexed (or pipeline/interleaved) implementation. Both narrow-band and wide-band frequency-response masking as well as arbitrary bandwidth frequency-response masking techniques are considered. The filter design is discussed and for each filter structure the limits on the specifications are derived. Designed examples show the usefulness of the proposed structures.

引用

页码：601 / 630

页数：30

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