| 基于FPGA的FIR数字滤波器的优化设计 |
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| 引用本文： | 张月红,王马华,朱霞.基于FPGA的FIR数字滤波器的优化设计[J].现代电子技术,2011,34(14):44-46,50. |
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| 作者姓名： | 张月红 王马华 朱霞 |
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| 作者单位： | 淮阴工学院电子与电气信息工程学院,江苏,淮安,223003 |
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| 基金项目： | 教育部新世纪优秀人才支持计划 |
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| 摘 要： | 提出采用正则有符号数字量（CSD）编码技术实现FIR滤波器。首先分析了FIR数字滤波器理论及常用设计方法的不足，然后介绍了二进制数的CSD编码技术及其特点，给出了其于CSD编码的定点常系数FIR滤波器设计过程，使用VHDI，语言实现了该常系数滤波器的行为描述。最后在Max＋PlusⅡ环境下进行实验仿真和验证，与DA和2C编码算法比较结果表明，用CSD编码技术实现的滤波器可以有效提高运算速度并降低FPGA芯片的面积占用。
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| 关 键 词： | CSD编码 分布式算法 FIR FPGA 常系数乘法 |
Optimal Design of FIR Digital Filter Based on FPGA |
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| ZHANG Yue-hong,WANG Ma-hua,ZHU Xia.Optimal Design of FIR Digital Filter Based on FPGA[J].Modern Electronic Technique,2011,34(14):44-46,50. |
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| Authors: | ZHANG Yue-hong WANG Ma-hua ZHU Xia |
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| Affiliation: | ZHANG Yue-hong,WANG Ma-hua,ZHU Xia(Faculty of Electronics and Electrical Engineering,Huaiyin Institute of Technology,Huaian 223003,China) |
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| Abstract: | Based on canonic signed CSD algorithm, a FIR digital filter is proposed. Firstly, the theories of FIR digital fil- ter and the shortages of usual designing method are analyzed, then the technology for CSD coding of binary is introduced, and the design process of a fixed point FIR based on CSD coding is presented, the FIR system is realized with VHDL. At last, the simulation design is carried out under Max＋ Plus Ⅱcircumstance, the simulation results show that CSD arithmetic can reduce the use of resources and improve the running speed compared with DA and 2C coding algorithm. |
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| Keywords: | CSD coding distributed arithmetic(DA) FIR FPGA multiplication of constant coefficient |
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