摘要
针对频率采样法设计FIR数字滤波器速度慢、误差大的缺点，介绍了优化设计法．该方法采用交错定理和瑞米兹算法，以误差的最大值最小为标准，通过叠代使逼近误差在邻域内最小。达到对理想FIR数字滤波器的最佳逼近．用两种方法设计相同阶数的滤波器，并比较仿真结果可以看出，优化设计法设计的滤波器性能更加优越．
In order to solve the problem, such as the speed is low, design precision is not high, which the frequency sampling method has, optimized method is presented. This method used the Alternation theorem and remez algorithm, took the biggest erroneous minimum as the criterion, by iteration, made the approximate error be smallest in neighborhood. Optimal approximation to the ideal FIR digital filter achieved. The above two methods are used separately and design same order filter. By comparison, we could find that： the filter designed by optimized algorithm is more superior.
出处
《哈尔滨理工大学学报》
CAS
北大核心
2009年第A01期31-33,36,共4页
Journal of Harbin University of Science and Technology
关键词
有限冲击响应
频率采样
瑞米兹算法
优化设计
finite impulse response
window functions
remez algorithm
optimization design
