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Efficient Implementation of an All-Adder Multiplier-Free Decimation and Compensation Filter
Author(s): 
Pages: 526-530
Year: Issue:  6
Journal: TRANSACTIONS OF BEIJING INSTITUTE OF TECHNOLOGY

Keyword:  级联积分梳状滤波器补偿滤波滤波器高效结构构;
Abstract: 针对接收机设计中使用有限冲击响应(FIR)滤波器对级联积分梳状(CIC)抽取滤波器进行补偿滤波的问题,提出了一种全加结构无乘法运算的FIR补偿滤波器实现方式.通过对FIR补偿滤波器系数的近似,将滤波器系数用与它最接近的{2n}集合中的一个数表示,将滤波器乘法运算转换为移位运算,整个补偿滤波运算仅由滤波器阶数个加法单元构成.仿真结果表明,这种采用系数近似的算法在实现高速运算的同时,可以满足对CIC抽取滤波器进行补偿滤波的要求.
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