Cascaded Form Sparse FIR Filter Design
Cascaded Form Sparse FIR Filter Design
复制标题
级联形式稀疏 FIR 滤波器设计
DOI:
10.1109/tcsi.2020.2964568
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发表时间:
2020-01
期刊:
影响因子:
--
通讯作者:
Xin Lou
中科院分区:
文献类型:
--
作者:
Wangqian Chen;Mo Huang;Wenbin Ye;Xin Lou
In this paper, a cascaded form sparse finite impulse response (FIR) filter design algorithm is proposed. By decomposing a filter into two subfilters, the sparse filter design problem is reformulated as a quadratic constrained ${l} _{0}$ -norm minimization problem, which is further transformed to a convex problem through the introduction of a binary masking vector. An iterative forth-and-back search with sequence direction and error direction control is proposed to optimize the binary masking vector by minimizing the distance between the minimax approximation error and the specified upper bound. Experimental results show that the proposed design algorithm can improve the sparsity with comparable or even lower effective filter order.
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