基于子项空间技术的低复杂度FIR滤波器实现  

Implementation of low complexity FIR digital filters based on subexpression space

作　　者：徐红[1] 叶丰[2] 黄朝耿[3] 

机构地区：[1]浙江工业大学信息工程学院,浙江杭州310023 [2]杭州国芯科技股份有限公司,浙江杭州310012 [3]浙江财经大学信息学院,浙江杭州310018

出　　处：《电子技术应用》2014年第6期33-35,38,共4页Application of Electronic Technique

摘　　要：基于子项空间共享技术,利用硬件描述语言编程,在FPGA上对FIR数字滤波器进行了实现。该设计将常系数乘法模块用加法和移位操作来实现,并利用子项共享有效地减少加法器个数。综合结果表明,所提方法可以有效节省硬件资源,降低实现成本,适用于低功耗数字系统设计。FIR filters are realized on FPGA by using hardware description language programming based on sharing common subexpression. In these techniques, the coefficient multipliers are realized as a multiplier block （MB） with shared shifters and adders, and common subexpression sharing is used to effectively reduce the number of adders. The results of hardware synthesis show that the proposed method can efficiently save hardware resources consumption and achieve lower implementation costs, which is in favor of low-power design of digital systems.

关 键 词：FIR数字滤波器 子项空间 子项共享 FPGA 

分 类 号：TN713[电子电信—电路与系统]