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| 余弦调制滤波器组的设计研究 | |
| 引用本文： | 张珺,魏学业. 余弦调制滤波器组的设计研究[J]. 北京交通大学学报(自然科学版), 2004, 28(3): 103-105,109 |
| 作者姓名： | 张珺 魏学业 |
| 作者单位： | 北京交通大学,电子信息工程学院,北京,100044;北京交通大学,电子信息工程学院,北京,100044 |
| 基金项目： | 北方交通大学校科研和教改项目 |
| 摘 要： | 介绍了一种近似准确重建(NPR)的余弦调制滤波器组(CMFB)的设计方法,与传统设计相比,该设计方法是集高效性与良好的原型滤波器设计于一体.利用线性迭代方程的方法来解决阻带的优化问题,迭代误差小,迭代收敛快,线性度好,阻带衰耗特性也明显优于其它传统的设计方法. |
| 关 键 词： | 仿真技术 余弦调制滤波器组 近似准确重构 迭代线性方程 |
| 文章编号： | 1000-1506(2004)03-103-03 |
| 修稿时间： | 2003-08-08 |
Research on Cosine-Modulated Filter Banks |
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| ZHANG Jun,WEI Xue-ye. Research on Cosine-Modulated Filter Banks[J]. JOURNAL OF BEIJING JIAOTONG UNIVERSITY, 2004, 28(3): 103-105,109 | |
| Authors: | ZHANG Jun WEI Xue-ye |
| Abstract: | In this paper, we present an improved design for near perfect reconstruction(NPR) critically sampled cosine_modulated filter banks(CMFB). Compared to other design techniques, this method converges very rapidly and allows for the design of excellent prototype filters. The optimization procedure requires linear iterative equation solving stopband attenuation problem with small iterative error. The properties of stopband are superior to other conventional design method. The advantages of this method are its rapid convergence and excellent linearity. |
| Keywords: | simulation technique cosine-modulated filter banks(CMFB) near perfect reconstruction(NPR) linear iterative equation |
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