| 摘要: |
| 半带滤波器是一种高效的数字滤波器,目前流行的半带滤波器设计方法一般能够满足参数要求,但其存在着功耗高、面积大、资源耗费代价高等不足之处。为了弥补上述的不足,文中提出了一种基于折叠技术的新的半带滤波器设计方法。首先根据设计要求用MATLAB产生相应的滤波器系数,用CSD码对系数进行优化,然后采用折叠结构,通过代码实现。设计过程当中还用到分时复用和重定时技术。相比其它半带滤波器的设计,本设计具有耗费的资源少,整个抽取、滤波过程包括系数产生始终没有用到乘法器,而且延迟小、功耗低、面积小、单一时钟控制有很高的稳定性。 |
| 关键词: 数字上下变频 半带滤波器 折叠结构 FIR滤波器 |
| DOI： |
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| 基金项目:福建省教育厅支持(JA09006) |
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| Fold Structure Based on the Design of Half-Band Filter |
| YE Qiaowen,LIN Wei |
| () |
| Abstract: |
| Half-band filter is a highly efficient digital filter,a currently popular method of half-band filter design parameters was generally able to meet the requirements,but there is a high power consumption,size large,resource-consuming expense of higher deficiencies.To compensate for these shortcomings,this paper proposes a new technique based on the folded half-band filter design methods.First,the design requirements in accordance with MATLAB to produce the filter coefficients,using CSD coefficients to optimize... |
| Key words: digital up and down coveter half-band filter folding structure FIR filter |
