| 低时延两通道PR FIR滤波器组的设计 |
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| 引用本文： | 李东平,赵尔沅,乐光新.低时延两通道PR FIR滤波器组的设计[J].北京邮电大学学报,2002,25(1):87-90. |
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| 作者姓名： | 李东平 赵尔沅 乐光新 |
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| 作者单位： | 北京邮电大学电信工程学院,北京,100876 |
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| 基金项目： | 国家自然科学基金;69972010; |
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| 摘 要： | 在两通道提升结构滤波器组的基础上,提出了一种新的低时延两通道完全重建(PR)FIR滤波器组的设计方法.该方法将两个非线性相位函数作为提升函数,并定义误差函数为提升函数理想频率响应与实际频率响应之差.逼近过程采用了实虚部相联合的Chebyshev逼近.
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| 关 键 词： | 数字滤波器 完全重建 提升函数 |
| 文章编号： | 1007-5321(2002)01-0087-04 |
| 修稿时间： | 2001年3月16日 |
Design of Two-Band PR FIR Filter Banks with Low Delay |
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| LI Dong ping,ZHAO Er yuan,YUE Guang xin.Design of Two-Band PR FIR Filter Banks with Low Delay[J].Journal of Beijing University of Posts and Telecommunications,2002,25(1):87-90. |
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| Authors: | LI Dong ping ZHAO Er yuan YUE Guang xin |
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| Abstract: | Based on the lifting scheme, a new design algorithm is proposed for two band PR FIR filter banks with low delay. In this new method, the lifting functions are selected as non linear phase functions and the error is defined as the difference between the ideal frequency response and the actual response of the liting functions. During the design of lifting functions, the jointed approximation between real part and imaginary part is exploited. |
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| Keywords: | digital filter perfect reconstruction lifting function |
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