CAJ | 학술논문

本文主要研究了采用CSD(canonic signed digit)编码的遗传算法对FIR(Finite Impulse Response)滤波器系数进行的有限精度优化,并对传统的CSD编码方法进行了改进,使之能够更快地收敛到最优解.针对CSD编码经过交叉、变异后可能出现的问题,提出了解码替代的解决方法.在级联滤波器的设计中,采用了波纹互相抵消技术使设计的级联滤波器通带内纹波大大降低.
본문주요연구료채용CSD(canonic signed digit)편마적유전산법대FIR(Finite Impulse Response)려파기계수진행적유한정도우화,병대전통적CSD편마방법진행료개진,사지능구경쾌지수렴도최우해.침대CSD편마경과교차、변이후가능출현적문제,제출료해마체대적해결방법.재급련려파기적설계중,채용료파문호상저소기술사설계적급련려파기통대내문파대대강저.
This paper is concerned with the development of a new technique for the optimization of FIR digital filters over the CSD coefficient space based on genetic algorithms. The algorithm will converge faster while use the new CSD encoding method presented in this paper. A novel approach is presented for the restoration of CSD numbers to their correct format after the application of crossover and mutation operations in genetic algorithms. The ripple in the passband can be reduced significantly while this technique is used in the design of cascade filters.