| 基于CORDIC算法的DDS的FPGA设计与优化 |
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| 引用本文： | 陈义和,余磊,李交美. 基于CORDIC算法的DDS的FPGA设计与优化[J]. 微电子学与计算机, 2012, 29(8): 111-114 |
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| 作者姓名： | 陈义和 余磊 李交美 |
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| 作者单位： | 中国科学院武汉物理与数学研究所,湖北武汉430071／中国科学院原子频标重点实验室武汉物理与数学研究所,湖北武汉430071 |
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| 基金项目： | 国家自然科学基金青年基金 |
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| 摘 要： | 采用CORDIC算法计算三角函数值来实现DDS,可以减少存储资源,便于在FPGA中实现.通过对传统CORDIC算法流水结构的分析,提出了一种在迭代过程采用不同位宽的寄存器存储角度值和幅度值的优化方法,可以节省资源而不影响计算精度,并且在FPGA中实现了该方法.
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| 关 键 词： | DDS CORDIC算法 FPGA 优化 |
Design and Optimization of DDS Based on CORDIC in FPGA |
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| CHEN Yi-he,SHE Lei,LI Jiao-mei. Design and Optimization of DDS Based on CORDIC in FPGA[J]. Microelectronics & Computer, 2012, 29(8): 111-114 |
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| Authors: | CHEN Yi-he SHE Lei LI Jiao-mei |
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| Affiliation: | 1,2(1 Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China;2 Key Laboratory of Atomic Frequency Standards(KLAFS),Wuhan Institute of Physics and Mathematics,Chinese Academy of Sciences,Wuhan 430071,China) |
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| Abstract: | This paper realizes DDS by using the CORDIC algorithm to calculate the value of trigonometric function,which is convenient to the FPGA implement.According to analysis of the traditional pipeline structure CORDIC algorithm,we present a new method of optimization that using different bits to save the anger value and amplitude value during iterations,and realize it in FPGA,which can reduce the FPGA resource. |
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| Keywords: | DDS CORDIC FPGA Optimization |
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