Verification of search process in CSD coefficient FIR filter design

Tomohiro Sasahara, K. Suyama
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Abstract

In this research, several design methods of FIR (Finite Impulse Response) filters with CSD (Canonic Signed Digit) coefficient are compared to investigate a search process of each method. The design problem is formulated as a 1, 0, −1 combinatorial optimization problem. In this problem, high computation time is required to obtain the optimal solution. Thus, many design methods using metaheuristic approaches have been proposed. In this study, the search process of design methods is verified. As a result, the differences between the design methods are clarified and thus it is expected that some cues for improving the performance can be attained.
CSD系数FIR滤波器设计中搜索过程的验证
在本研究中,比较了几种具有经典符号数字(CSD)系数的FIR (Finite Impulse Response)滤波器的设计方法,研究了每种方法的搜索过程。设计问题被表述为一个1,0,−1组合优化问题。在该问题中,计算时间较长,难以得到最优解。因此,已经提出了许多使用元启发式方法的设计方法。在本研究中,验证了设计方法的搜索过程。因此,澄清了设计方法之间的差异,从而有望获得一些改进性能的线索。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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