Two-stage iterative design for fast filter bank with low complexity
Two-stage iterative design for fast filter bank with low complexity
复制标题
低复杂度快速滤波器组的两级迭代设计
DOI：
10.1049/el.2015.3439
复制
发表时间：
2016
影响因子：
1.1
通讯作者：
Xia Yili
中科院分区：
文献类型：
--
作者：
Hao Jinguang;Pei Wenjiang;Wang Kai;Xia Yili
提出了一种两阶段迭代方法来设计低复杂度的快速滤波器组的原型滤波器，其目的是根据总体指标来控制每个滤波器的最佳涟漪幅度容限。这个问题被制定为一个优化问题，乘法的总数是最小化的受约束的涟漪在通带和阻带。提出了一个两阶段的迭代解决方案来解决这个优化问题的目的，在每个阶段获得低复杂度的冲激响应系数。仿真结果表明，与原方法相比，该方案可以减少约20.02%的乘法运算次数。
A two-stage iterative method is proposed to design prototype filters for a fast filter bank with low complexity, which is aimed at controlling the optimum ripple magnitude tolerance of each filter according to the overall specifications. This problem is formulated as an optimisation problem for which the total number of multiplications is to be minimised subject to the constrained ripple in the passband and stopband. A two-stage iterative solution is proposed to solve this optimisation problem for the purpose of obtaining impulse response coefficients with low complexity at each stage. Simulations have been conducted to verify the performance of the proposed scheme and show that compared with the original method the proposed scheme can reduce the number of multiplications by about 20.02%.