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首页> 外文会议>2018 IEEE 23rd International Conference on Digital Signal Processing >Sparse FIR Filter Design Based on Interpolation Technique
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Sparse FIR Filter Design Based on Interpolation Technique

机译：基于插值技术的稀疏FIR滤波器设计

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In this paper, a design method based on interpolation technique is proposed to design narrow-band sparse FIR filters and centrosymmetric bandpass filters. The design method is realized by cascading a model filter with a masking filter. The model filter is first designed and then interpolated to generate the desired impulse response replica. A sparse masking filter is used to mask the extra unwanted passbands. Unlike the interpolated FIR filter technique, both subfilters are designed as sparse filters by multiplierless algorithms to improve the overall sparsity of the filter. Simulation results show that the proposed cascaded realization of FIR filters results a significant improvement of sparsity than the conventional direct form or transposed direct form. It is also shown that the proposed method generates sparser solutions than the interpolated FIR filter technique due to the sparse design of subfilters.
机译：提出了一种基于插值技术的窄带稀疏FIR滤波器和中心对称带通滤波器的设计方法。该设计方法是通过将模型滤波器与掩蔽滤波器级联来实现的。首先设计模型滤波器，然后对其进行插值以生成所需的脉冲响应副本。稀疏屏蔽滤波器用于屏蔽多余的不想要的通带。与内插FIR滤波器技术不同，两个子滤波器均通过无乘法器算法设计为稀疏滤波器，以提高滤波器的整体稀疏性。仿真结果表明，与传统的直接形式或转置直接形式相比，所提出的FIR滤波器的级联实现显着改善了稀疏性。还表明，由于子滤波器的稀疏设计，所提出的方法比内插FIR滤波器技术产生的稀疏解。

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